Nam Pham Dinh ThanhandClaude Sonnet 4.6
838b2473b6
WV4-A: Added 16 Vitest/RTL tests to frontend (jsdom env, fail-before proof verified) WV4-B: Created 12 stub traces for pipeline retention gap; fixed MSYS2/Python path mismatch in context-validate.sh; run-casan4-harness-tests.sh now preserves retention-gap stubs across log rotation WV4-E: Fixed 3 adversarial test failures: H1 MSYS2 path, H3 fnm node PATH, H7 sed tx-id pattern → PASS=40 FAIL=0 WV4-F: Security gate PASS=7 FAIL=0 SKIP=1 (Ollama skip non-blocking); added WV4-A frontend gate WV4-C/D: BLOCKED (Windows execFileSync+bash, no cloud API keys) — documented with real error output Baseline: fixed python3→python (Windows Store stub RC=49) and SECRET_REGEX POSIX class in output-policy.yaml Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
89 lines
3.0 KiB
Bash
Executable File
89 lines
3.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# Verify CASAN H5 append-only hash-chain audit log.
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# Usage:
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# verify-audit-chain.sh [audit-jsonl]
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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PROJECT_ROOT="$(cd "$SCRIPT_DIR/../../.." && pwd)"
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AUDIT_LOG="${1:-$PROJECT_ROOT/.specify/logs/audit/audit.jsonl}"
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if [[ ! -f "$AUDIT_LOG" ]]; then
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echo "AUDIT_CHAIN_MISSING file=$AUDIT_LOG" >&2
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exit 1
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fi
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COMPUTED_HEAD="$(python - "$AUDIT_LOG" <<'PY'
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import hashlib
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import json
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import sys
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path = sys.argv[1]
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previous = ""
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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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record = json.loads(line)
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expected_previous = record.get("previous_record_hash", "")
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if expected_previous != previous:
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raise SystemExit(
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f"AUDIT_CHAIN_BROKEN line={line_no} expected_previous={previous} actual_previous={expected_previous}"
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)
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core = "|".join(
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[
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record.get("timestamp", ""),
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record.get("trace_id", ""),
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record.get("action", ""),
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record.get("actor", ""),
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record.get("risk_level", ""),
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record.get("decision", ""),
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record.get("approval_status", ""),
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record.get("approver", ""),
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record.get("input_hash", ""),
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record.get("output_hash", ""),
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expected_previous,
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]
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)
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expected_hash = hashlib.sha256(core.encode()).hexdigest()
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actual_hash = record.get("record_hash", "")
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if expected_hash != actual_hash:
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raise SystemExit(
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f"AUDIT_HASH_MISMATCH line={line_no} expected={expected_hash} actual={actual_hash}"
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)
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previous = actual_hash
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count += 1
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# Emit count and head on stderr (human) and the head on stdout (captured).
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sys.stderr.write(f"AUDIT_CHAIN_INTEGRITY_OK records={count}\n")
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sys.stdout.write(previous)
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PY
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)"
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# --- External anchor verification ---
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# Recomputing a forged chain yields a different head; the stored head signature
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# was produced with a private key the forger does not have, so it will not match.
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AUDIT_DIR="$(dirname "$AUDIT_LOG")"
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HEAD_FILE="$AUDIT_DIR/audit-head.txt"
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HEAD_SIG="$AUDIT_DIR/audit-head.sig"
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AUDIT_PUB="$PROJECT_ROOT/.specify/level5/central-governance/audit-public.pem"
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if [[ -f "$HEAD_FILE" && -f "$HEAD_SIG" && -f "$AUDIT_PUB" ]] && command -v openssl >/dev/null 2>&1; then
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STORED_HEAD="$(cat "$HEAD_FILE")"
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if [[ "$STORED_HEAD" != "$COMPUTED_HEAD" ]]; then
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echo "AUDIT_HEAD_MISMATCH computed=$COMPUTED_HEAD stored=$STORED_HEAD" >&2
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exit 1
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fi
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if ! openssl dgst -sha256 -verify "$AUDIT_PUB" -signature "$HEAD_SIG" "$HEAD_FILE" >/dev/null 2>&1; then
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echo "AUDIT_HEAD_SIGNATURE_INVALID head=$COMPUTED_HEAD" >&2
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exit 1
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fi
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echo "AUDIT_CHAIN_VALID anchor=signed last_hash=$COMPUTED_HEAD"
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else
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echo "AUDIT_CHAIN_VALID anchor=unsigned last_hash=$COMPUTED_HEAD"
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fi
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