85 lines
3.3 KiB
Bash
85 lines
3.3 KiB
Bash
#!/usr/bin/env bash
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set -uo pipefail
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# CASAN Plan-16 SEC-18 (ARCH-02) — test-integrity manifest.
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#
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# Test suites are in the same repo an attacker can edit, so "green" proves nothing
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# if a fail-able check was quietly deleted. The signed manifest records per-suite
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# hash + fail-able-check count; CI re-verifies. This proves:
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# * intact suites verify (permissive + strict/signed),
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# * deleting a fail-able check -> FAIL (coverage regression),
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# * removing a whole suite -> FAIL (suite removed),
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# * tampering the manifest -> FAIL (signature invalid).
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#
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# Deterministic; hermetic (operates on a temp copy of the test dir).
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
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TI="$PROJECT_ROOT/.specify/scripts/bash/test-integrity.py"
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WORK="$(mktemp -d)"
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trap 'rm -rf "$WORK"' EXIT
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mkdir -p "$WORK/tests"
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cp "$PROJECT_ROOT/.specify/tests/phase-sec01-tests.sh" \
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"$PROJECT_ROOT/.specify/tests/phase-control-plane-tests.sh" "$WORK/tests/"
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export CASAN_TESTS_DIR="$WORK/tests"
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export CASAN_TEST_MANIFEST="$WORK/manifest.json"
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export CASAN_TI_KEY_DIR="$WORK/keys"
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export CASAN_TI_PUB="$WORK/ti.pub"
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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 $?; set -e 2>/dev/null || true; }
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echo "===== Plan-16 SEC-18: test-integrity manifest ====="
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python3 "$TI" generate >/dev/null 2>&1
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[[ "$(rc_of python3 "$TI" verify)" -eq 0 ]] \
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&& pass "intact suites verify" || fail "intact verify failed"
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[[ "$(rc_of python3 "$TI" verify --strict)" -eq 0 ]] \
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&& pass "intact suites verify under --strict (signed)" || fail "strict verify failed on signed manifest"
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# Delete one fail-able check line from a suite.
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python3 - "$WORK/tests/phase-sec01-tests.sh" <<'PY'
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import re, sys
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p = sys.argv[1]
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lines = open(p, encoding="utf-8").read().splitlines(keepends=True)
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out, removed = [], False
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for ln in lines:
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if not removed and 'pass "' in ln:
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removed = True # drop the first assertion line
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continue
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out.append(ln)
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open(p, "w", encoding="utf-8").write("".join(out))
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PY
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[[ "$(rc_of python3 "$TI" verify)" -ne 0 ]] \
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&& pass "deleting a fail-able check → FAIL (coverage regression)" \
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|| fail "coverage regression not detected"
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# Restore, then remove an entire suite.
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python3 "$TI" generate >/dev/null 2>&1
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rm -f "$WORK/tests/phase-control-plane-tests.sh"
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[[ "$(rc_of python3 "$TI" verify)" -ne 0 ]] \
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&& pass "removing a whole suite → FAIL (suite removed)" \
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|| fail "suite removal not detected"
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# Restore, then tamper the manifest content (without re-signing).
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cp "$PROJECT_ROOT/.specify/tests/phase-control-plane-tests.sh" "$WORK/tests/"
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python3 "$TI" generate >/dev/null 2>&1
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python3 - "$WORK/manifest.json" <<'PY'
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import json, sys
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p = sys.argv[1]; d = json.load(open(p))
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# lower a recorded count so a later real drop would pass — the signature must catch this
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for name in d["suites"]:
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d["suites"][name]["checks"] = 0
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json.dump(d, open(p, "w"), indent=2)
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PY
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[[ "$(rc_of python3 "$TI" verify)" -ne 0 ]] \
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&& pass "tampering the manifest → FAIL (signature invalid)" \
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|| fail "manifest tamper not detected by signature"
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echo ""
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echo "===== SEC-18 SUMMARY: PASS=$PASS FAIL=$FAIL ====="
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[[ "$FAIL" -eq 0 ]] || exit 1
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