thanhnvandClaude Opus 4.8
2c765c9a45
Task 1.2: introduce a single path resolver so no harness script hardcodes `.specify/...` scattered across the tree. casan-paths.sh resolves four roots (HARNESS/STATE/GOVERNANCE/APP) by marker-based walk-up from its own location — never `git rev-parse` (git root is the repo PARENT here, not the app dir). - 101 bash scripts/tests: 238 hardcoded `$PROJECT_ROOT/.specify/...` refs rewritten to CASAN_HARNESS_ROOT (code) / CASAN_STATE_ROOT (logs,state) / CASAN_GOVERNANCE_ROOT. Sandbox test vars ($WORK/$TP/$FP/$T1_WORK) left untouched. - Roots are NOT exported: each script/subprocess self-resolves from its own tree, matching the original per-script semantics and preserving hermetic sandbox isolation (node casan-step.mjs, copied telemetry/rollback scripts must not inherit real roots). - Sandbox tests that copy a harness script now also copy casan-paths.sh (its new sibling dependency): adversarial (verify-audit-chain/verify-tool-audit/rollback) + track-a (security-check/telemetry-integrity). - control-plane-settings.json reclassified as STATE (untracked runtime store). Roots all still resolve to `.specify` in this monolithic layout, so behavior is unchanged. Full gate: PASS=64 FAIL=0 SKIP=3 (adversarial 44/0, track-a 25/0). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
73 lines
2.7 KiB
Bash
Executable File
73 lines
2.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# Verify the tamper-evident central tool-call audit log:
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# 1. recompute the SHA-256 hash chain
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# 2. confirm the stored head equals the computed head
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# 3. verify the head's RSA signature
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# Usage: verify-tool-audit.sh [tool-calls.jsonl]
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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source "$SCRIPT_DIR/casan-paths.sh"
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PROJECT_ROOT="$(cd "$SCRIPT_DIR/../../.." && pwd)"
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LOG="${1:-$CASAN_STATE_ROOT/logs/audit/tool-calls.jsonl}"
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if [[ ! -f "$LOG" ]]; then
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echo "TOOL_AUDIT_MISSING file=$LOG" >&2
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exit 1
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fi
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COMPUTED_HEAD="$(python - "$LOG" <<'PY'
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import hashlib, json, sys
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path = sys.argv[1]
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prev = ""
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count = 0
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with open(path, encoding="utf-8") as f:
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for line_no, line in enumerate(f, 1):
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if not line.strip():
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continue
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rec = json.loads(line)
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if rec.get("previous_record_hash", "") != prev:
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raise SystemExit(f"TOOL_AUDIT_CHAIN_BROKEN line={line_no}")
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stored = rec.pop("record_hash", "")
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core = json.dumps(rec, sort_keys=True, separators=(",", ":"))
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expected = hashlib.sha256((prev + "|" + core).encode()).hexdigest()
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if expected != stored:
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raise SystemExit(f"TOOL_AUDIT_HASH_MISMATCH line={line_no}")
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prev = stored
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count += 1
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sys.stderr.write(f"TOOL_AUDIT_INTEGRITY_OK records={count}\n")
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sys.stdout.write(prev)
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PY
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)"
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AUDIT_DIR="$(dirname "$LOG")"
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HEAD_FILE="$AUDIT_DIR/tool-calls-head.txt"
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HEAD_SIG="$AUDIT_DIR/tool-calls-head.sig"
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AUDIT_PUB="$CASAN_GOVERNANCE_ROOT/audit-public.pem"
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if [[ -f "$HEAD_FILE" && -f "$HEAD_SIG" && -f "$AUDIT_PUB" ]] && command -v openssl >/dev/null 2>&1; then
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if [[ "$(cat "$HEAD_FILE")" != "$COMPUTED_HEAD" ]]; then
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echo "TOOL_AUDIT_HEAD_MISMATCH computed=$COMPUTED_HEAD" >&2
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exit 1
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fi
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if ! openssl dgst -sha256 -verify "$AUDIT_PUB" -signature "$HEAD_SIG" "$HEAD_FILE" >/dev/null 2>&1; then
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echo "TOOL_AUDIT_HEAD_SIGNATURE_INVALID head=$COMPUTED_HEAD" >&2
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exit 1
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fi
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echo "TOOL_AUDIT_VALID anchor=signed last_hash=$COMPUTED_HEAD"
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else
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# SEC-01 (H-01): enforced mode treats a missing/unverifiable signature as FAIL.
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# Self-contained (this script is copied into sandboxes by tests — no common.sh).
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if [[ "${CASAN_PROFILE:-}" == "prod" || "${CASAN_VERIFY_STRICT:-}" == "1" ]]; then
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MISSING=""
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[[ -f "$HEAD_FILE" ]] || MISSING="$MISSING head-file"
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[[ -f "$HEAD_SIG" ]] || MISSING="$MISSING head-sig"
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[[ -f "$AUDIT_PUB" ]] || MISSING="$MISSING pubkey"
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command -v openssl >/dev/null 2>&1 || MISSING="$MISSING openssl"
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echo "TOOL_AUDIT_UNSIGNED_STRICT_FAIL last_hash=$COMPUTED_HEAD missing=${MISSING# }" >&2
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exit 1
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fi
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echo "TOOL_AUDIT_VALID anchor=unsigned last_hash=$COMPUTED_HEAD"
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fi
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