feat: plan 16-01

2026-07-06 21:47:38 +09:00
parent 4419cd9eae
commit 8c3c5e8bff
30 changed files with 1646 additions and 66 deletions
@@ -0,0 +1,84 @@
+#!/usr/bin/env bash
+set -uo pipefail
+
+# CASAN Plan-16 SEC-18 (ARCH-02) — test-integrity manifest.
+#
+# Test suites are in the same repo an attacker can edit, so "green" proves nothing
+# if a fail-able check was quietly deleted. The signed manifest records per-suite
+# hash + fail-able-check count; CI re-verifies. This proves:
+#   * intact suites verify (permissive + strict/signed),
+#   * deleting a fail-able check -> FAIL (coverage regression),
+#   * removing a whole suite     -> FAIL (suite removed),
+#   * tampering the manifest      -> FAIL (signature invalid).
+#
+# Deterministic; hermetic (operates on a temp copy of the test dir).
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
+TI="$PROJECT_ROOT/.specify/scripts/bash/test-integrity.py"
+WORK="$(mktemp -d)"
+trap 'rm -rf "$WORK"' EXIT
+
+mkdir -p "$WORK/tests"
+cp "$PROJECT_ROOT/.specify/tests/phase-sec01-tests.sh" \
+   "$PROJECT_ROOT/.specify/tests/phase-control-plane-tests.sh" "$WORK/tests/"
+export CASAN_TESTS_DIR="$WORK/tests"
+export CASAN_TEST_MANIFEST="$WORK/manifest.json"
+export CASAN_TI_KEY_DIR="$WORK/keys"
+export CASAN_TI_PUB="$WORK/ti.pub"
+
+PASS=0; FAIL=0
+pass() { echo "PASS: $1"; PASS=$((PASS + 1)); }
+fail() { echo "FAIL: $1"; FAIL=$((FAIL + 1)); }
+rc_of() { set +e; "$@" >/dev/null 2>&1; echo $?; set -e 2>/dev/null || true; }
+
+echo "===== Plan-16 SEC-18: test-integrity manifest ====="
+
+python3 "$TI" generate >/dev/null 2>&1
+[[ "$(rc_of python3 "$TI" verify)" -eq 0 ]] \
+  && pass "intact suites verify" || fail "intact verify failed"
+[[ "$(rc_of python3 "$TI" verify --strict)" -eq 0 ]] \
+  && pass "intact suites verify under --strict (signed)" || fail "strict verify failed on signed manifest"
+
+# Delete one fail-able check line from a suite.
+python3 - "$WORK/tests/phase-sec01-tests.sh" <<'PY'
+import re, sys
+p = sys.argv[1]
+lines = open(p, encoding="utf-8").read().splitlines(keepends=True)
+out, removed = [], False
+for ln in lines:
+    if not removed and 'pass "' in ln:
+        removed = True          # drop the first assertion line
+        continue
+    out.append(ln)
+open(p, "w", encoding="utf-8").write("".join(out))
+PY
+[[ "$(rc_of python3 "$TI" verify)" -ne 0 ]] \
+  && pass "deleting a fail-able check → FAIL (coverage regression)" \
+  || fail "coverage regression not detected"
+
+# Restore, then remove an entire suite.
+python3 "$TI" generate >/dev/null 2>&1
+rm -f "$WORK/tests/phase-control-plane-tests.sh"
+[[ "$(rc_of python3 "$TI" verify)" -ne 0 ]] \
+  && pass "removing a whole suite → FAIL (suite removed)" \
+  || fail "suite removal not detected"
+
+# Restore, then tamper the manifest content (without re-signing).
+cp "$PROJECT_ROOT/.specify/tests/phase-control-plane-tests.sh" "$WORK/tests/"
+python3 "$TI" generate >/dev/null 2>&1
+python3 - "$WORK/manifest.json" <<'PY'
+import json, sys
+p = sys.argv[1]; d = json.load(open(p))
+# lower a recorded count so a later real drop would pass — the signature must catch this
+for name in d["suites"]:
+    d["suites"][name]["checks"] = 0
+json.dump(d, open(p, "w"), indent=2)
+PY
+[[ "$(rc_of python3 "$TI" verify)" -ne 0 ]] \
+  && pass "tampering the manifest → FAIL (signature invalid)" \
+  || fail "manifest tamper not detected by signature"
+
+echo ""
+echo "===== SEC-18 SUMMARY: PASS=$PASS FAIL=$FAIL ====="
+[[ "$FAIL" -eq 0 ]] || exit 1