# -*- coding: utf-8 -*-
"""Comitari - Offline, read-only HardeningKitty audit package for WAPT.

All endpoint operations use WAPT setuphelpers where an appropriate helper exists.
WAPT verifies the package signature; vendor-manifest.json additionally checks the
pinned HardeningKitty payload, including after it is installed.

Build requires update_package.py to prepare vendor/ BEFORE WAPT build/sign/upload.
"""

from setuphelpers import *
import collections
import csv
import datetime
import hashlib  # Stable, reproducible distribution of finding IDs to WAPT audit keys.
import io
import json
import locale
import os
import uuid

uninstallkey = []

PACKAGE_NAME = 'comi-audit-hardeningkitty'
AUDIT_SECTION = 'HardeningKitty'
UPSTREAM_COMMIT = 'acf9ecee3d044a9337df7aad80e730cbd746e8de'
PROGRAM_DATA = os.environ.get('ProgramData', r'C:\ProgramData')
INSTALL_ROOT = makepath(PROGRAM_DATA, 'Comitari', 'Audit-HardeningKitty')
REPORT_ROOT = makepath(PROGRAM_DATA, 'Comitari', 'Audit-HardeningKitty-Reports')
OWNER_MARKER = '.comi-audit-hardeningkitty-owner'

# Keep aligned with runner.ps1 supported auto-selected baselines.
REQUIRED_VENDOR_FILES = (
    'HardeningKitty.psm1', 'HardeningKitty.psd1', 'LICENSE',
    'lists/hardeningkitty_lists_manifest.psd1',
    'lists/hardeningkitty_lists_manifest.psd1.p7s',
    'lists/finding_list_0x6d69636b_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_10_20h2_21h1_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_10_21h2_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_10_22h2_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_11_21h2_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_11_22h2_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_11_23h2_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_11_24h2_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_11_25h2_machine.csv',
    'lists/finding_list_cis_microsoft_windows_server_2012_r2_3.0.0_machine.csv',
    'lists/finding_list_cis_microsoft_windows_server_2016_1607_3.0.0_machine.csv',
    'lists/finding_list_cis_microsoft_windows_server_2019_1809_3.0.0_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_server_2022_21h2_dc_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_server_2022_21h2_member_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_server_2025_24h2_dc_machine.csv',
    'lists/finding_list_msft_security_baseline_windows_server_2025_24h2_member_machine.csv',
)

# A staged/installed directory stores the vendor files at its root (NOT /vendor).
RUNTIME_FILES = ('runner.ps1', 'audit_config.json')
# Old package versions included this file. It is no longer required or trusted.
LEGACY_FILES = ('package-manifest.json',)


def _package_source():
    """Use WAPT's extraction directory, not cwd or the launcher's path."""
    root = globals().get('basedir')
    if not root:
        root = os.path.dirname(os.path.abspath(__file__)) if globals().get('__file__') else None
    if not root:
        raise RuntimeError('WAPT basedir is not available.')
    root = os.path.relpath(os.path.abspath(root), os.getcwd())
    if not isfile(makepath(root, 'runner.ps1')) or not isfile(makepath(root, 'audit_config.json')):
        raise RuntimeError('WAPT package source is missing runner.ps1 or audit_config.json: %s' % root)
    return root


def _load_json(path):
    return json_load_file(path)


def _save_json(path, payload):
    json_write_file(path, payload, indent=2, sort_keys=True)


def _safe_vendor_name(name):
    return (isinstance(name, str) and bool(name) and '\\' not in name and
            ':' not in name and not name.startswith('/') and
            all(part not in ('', '.', '..') for part in name.split('/')))


def _verify_vendor(root, runtime=False, allow_extra=False):
    """Verify all publisher payload hashes and reject unexpected files/symlinks."""
    manifest_file = makepath(root, 'vendor-manifest.json')
    if not isfile(manifest_file):
        raise RuntimeError('HardeningKitty vendor-manifest.json is absent from the signed WAPT package. Run Update Package, then BUILD/SIGN/UPLOAD the new .wapt.')
    manifest = _load_json(manifest_file)
    if not isinstance(manifest, dict) or manifest.get('upstream_commit') != UPSTREAM_COMMIT:
        raise RuntimeError('Unexpected HardeningKitty vendor revision.')
    files = manifest.get('files')
    if not isinstance(files, dict) or len(files) < 50:
        raise RuntimeError('HardeningKitty vendor file inventory is invalid/incomplete.')
    missing = set(REQUIRED_VENDOR_FILES).difference(files)
    if missing:
        raise RuntimeError('HardeningKitty vendor manifest missing: %s' % ', '.join(sorted(missing)))

    root_real = os.path.realpath(root)
    expected = {'vendor-manifest.json'}
    for relative, checksum in files.items():
        if not _safe_vendor_name(relative):
            raise RuntimeError('Unsafe vendor filename: %r' % relative)
        if not isinstance(checksum, str) or len(checksum) != 64 or any(c not in '0123456789abcdefABCDEF' for c in checksum):
            raise RuntimeError('Invalid vendor SHA-256 entry: %s' % relative)
        filename = os.path.realpath(makepath(root, *relative.split('/')))
        if not filename.startswith(root_real + os.sep):
            raise RuntimeError('Vendor filename escaped installation directory: %s' % relative)
        if not isfile(filename) or get_sha256(filename).lower() != checksum.lower():
            raise RuntimeError('Missing/altered vendor asset: %s' % relative)
        expected.add(relative)

    if runtime:
        for filename in RUNTIME_FILES:
            if not isfile(makepath(root, filename)):
                raise RuntimeError('Installed WAPT runtime file missing: %s' % filename)
        expected.update(RUNTIME_FILES)
        # Older installed versions may contain this obsolete manifest.
        expected.update(name for name in LEGACY_FILES if isfile(makepath(root, name)))
        if isfile(makepath(root, OWNER_MARKER)):
            expected.add(OWNER_MARKER)

    actual = set()
    for directory, folders, names in os.walk(root, followlinks=False):
        for name in folders + names:
            if os.path.islink(makepath(directory, name)):
                raise RuntimeError('HardeningKitty directory contains a symlink; refusing it.')
        for name in names:
            actual.add(os.path.relpath(makepath(directory, name), root).replace(os.sep, '/'))
    if not expected.issubset(actual) or (not allow_extra and actual != expected):
        raise RuntimeError('Unexpected/missing files in HardeningKitty directory: %s' %
                           ', '.join(sorted(actual.symmetric_difference(expected))[:10]))
    return manifest


def _owned_install(root, allow_extra=False):
    """Never replace/delete a directory belonging to someone else."""
    if os.path.islink(root) or not isdir(root):
        return False
    try:
        marker = makepath(root, OWNER_MARKER)
        if isfile(marker):
            with open(marker, encoding='ascii') as stream:
                if stream.read().strip() != PACKAGE_NAME:
                    return False
        # Legacy upgrade without owner marker: require intact original payload.
        _verify_vendor(root, runtime=True, allow_extra=allow_extra)
        return True
    except Exception:
        return False


def _remove_owned_install_files(root):
    """Remove only verified package files, keeping unrelated operator data."""
    manifest = _verify_vendor(root, runtime=True, allow_extra=True)
    managed = set(manifest['files'])
    managed.update(('vendor-manifest.json',) + RUNTIME_FILES + LEGACY_FILES + (OWNER_MARKER,))
    root_real = os.path.realpath(root)
    for relative in sorted(managed, key=lambda value: value.count('/'), reverse=True):
        if not _safe_vendor_name(relative):
            raise RuntimeError('Unsafe installed manifest path; refusing removal.')
        path = makepath(root, *relative.split('/'))
        resolved = os.path.realpath(path)
        if not resolved.startswith(root_real + os.sep):
            raise RuntimeError('Installed manifest path escapes package root; refusing removal.')
        if os.path.isfile(path) and not os.path.islink(path):
            os.unlink(path)
        parent = os.path.dirname(path)
        while parent.startswith(root_real + os.sep):
            try:
                os.rmdir(parent)
            except OSError:
                break
            parent = os.path.dirname(parent)
    for current, folders, names in os.walk(root, topdown=False, followlinks=False):
        for folder in folders:
            path = makepath(current, folder)
            if not os.path.islink(path):
                try:
                    os.rmdir(path)
                except OSError:
                    pass
    try:
        os.rmdir(root)
    except OSError:
        print('Preserved non-package data remaining in %s.' % root)


def _secure_directory(path):
    """Apply SID-based ACLs independent of Windows display language."""
    if os.name != 'nt':
        return
    run(['icacls.exe', path, '/inheritance:r', '/grant:r',
         '*S-1-5-18:(OI)(CI)F', '*S-1-5-32-544:(OI)(CI)F', '/T', '/Q'],
        shell=False, timeout=120, accept_returncodes=[0])


def install():
    """Install files from WAPT basedir, offline; stage then swap atomically."""
    source = _package_source()
    vendor = makepath(source, 'vendor')
    manifest = _verify_vendor(vendor)
    parent = os.path.dirname(INSTALL_ROOT)
    mkdirs(parent)
    staging = INSTALL_ROOT + '.staging-' + uuid.uuid4().hex
    previous = INSTALL_ROOT + '.previous-' + uuid.uuid4().hex
    old_moved = False
    try:
        if os.path.lexists(INSTALL_ROOT) and not _owned_install(INSTALL_ROOT):
            raise RuntimeError('Install directory already exists but is not owned by this WAPT package.')
        mkdirs(staging)
        _secure_directory(staging)
        copytree2(vendor, staging, follow_symlinks=False)
        for filename in RUNTIME_FILES:
            filecopyto(makepath(source, filename), makepath(staging, filename))
        _verify_vendor(staging, runtime=True)
        with open(makepath(staging, OWNER_MARKER), 'w', encoding='ascii') as stream:
            stream.write(PACKAGE_NAME + '\n')
        _secure_directory(staging)
        mkdirs(REPORT_ROOT)
        _secure_directory(REPORT_ROOT)
        if isdir(INSTALL_ROOT):
            os.rename(INSTALL_ROOT, previous)
            old_moved = True
        try:
            os.rename(staging, INSTALL_ROOT)
        except Exception:
            if old_moved and isdir(previous) and not os.path.exists(INSTALL_ROOT):
                os.rename(previous, INSTALL_ROOT)
                old_moved = False
            raise
        if old_moved and isdir(previous):
            try:
                remove_tree(previous)
            except Exception as exc:
                print('Previous owned installation preserved for manual cleanup: %s' % type(exc).__name__)
    finally:
        if isdir(staging):
            remove_tree(staging, ignore_errors=True)
    print('HardeningKitty installed offline: %s (%s verified files)' %
          (manifest['upstream_commit'], len(manifest['files'])))


def uninstall():
    if os.path.lexists(INSTALL_ROOT):
        if not _owned_install(INSTALL_ROOT, allow_extra=True):
            raise RuntimeError('Uninstall refused: directory is unverified or not owned by this package.')
        _remove_owned_install_files(INSTALL_ROOT)
    print('HardeningKitty removed. Historical reports kept: %s' % REPORT_ROOT)


def _powershell_executable():
    """Use native 64-bit PowerShell when WAPT is a 32-bit process."""
    system_root = os.environ.get('SystemRoot', r'C:\Windows')
    sysnative = makepath(system_root, 'Sysnative', 'WindowsPowerShell', 'v1.0', 'powershell.exe')
    if isfile(sysnative):
        return sysnative
    native = makepath(system32(), 'WindowsPowerShell', 'v1.0', 'powershell.exe')
    if isfile(native):
        return native
    raise RuntimeError('Windows PowerShell 5.1 is missing.')

def _read_report(path, publish_current_values=False):
    fieldnames, rows = _read_csv_rows(path)
    required = {'ID', 'Category', 'Name', 'Severity', 'Result', 'Recommended', 'TestResult', 'SeverityFinding'}
    if not fieldnames or not required.issubset(fieldnames):
        raise RuntimeError('Unexpected HardeningKitty CSV headers: %r' % (fieldnames,))
    if not rows:
        raise RuntimeError('HardeningKitty CSV is empty; refuse a false OK.')

    counts = {'passed': 0, 'high': 0, 'medium': 0, 'low': 0, 'unknown': 0,
              'ignored': 0, 'not_applicable': 0, 'excluded': 0, 'total': 0, 'executed': 0}
    findings = []
    seen = set()
    for item in rows:
        if None in item:
            raise RuntimeError('HardeningKitty CSV row has an unexpected number of columns.')
        control_id = str(item.get('ID') or '').strip()
        if not control_id or control_id in seen:
            raise RuntimeError('HardeningKitty CSV contains a blank or duplicate control ID: %r' % (control_id,))
        seen.add(control_id)
        level = (item.get('Severity') or '').strip().lower()
        outcome = (item.get('TestResult') or '').strip().lower()
        if outcome == 'passed' and level == 'passed':
            counts['passed'] += 1
            counts['total'] += 1
            counts['executed'] += 1
            continue
        if outcome in ('not applicable', 'not_applicable', 'n/a'):
            counts['not_applicable'] += 1
            continue
        if outcome in ('ignored', 'skipped', 'not evaluated', 'not_evaluated'):
            counts['ignored'] += 1
            counts['total'] += 1
            level = 'ignored'
        elif (outcome in ('failed', 'fail') and level in ('high', 'medium', 'low') and
              (item.get('SeverityFinding') or '').strip().lower() == level):
            counts[level] += 1
            counts['total'] += 1
            counts['executed'] += 1
        else:
            counts['unknown'] += 1
            counts['total'] += 1
            level = 'unknown'
        finding = {
            'id': str(item.get('ID') or ''),
            'category': str(item.get('Category') or ''),
            'name': str(item.get('Name') or ''),
            'severity': level,
            'result': str(item.get('TestResult') or ''),
        }
        # Avoid uploading potentially sensitive local configuration by default.
        if publish_current_values:
            finding['current'] = str(item.get('Result') or '')
            finding['recommended'] = str(item.get('Recommended') or '')
        findings.append(finding)
    counts['compliant_percent'] = round(100.0 * counts['passed'] / counts['total'], 2) if counts['total'] else 0.0
    return counts, findings


def _read_csv_rows(path):
    """Read PowerShell 5.1 output strictly across UTF encodings and local code pages."""
    with open(path, 'rb') as fh:
        data = fh.read()
    if data.startswith((b'\xff\xfe', b'\xfe\xff')):
        text = data.decode('utf-16')
    elif data.startswith(b'\xef\xbb\xbf'):
        text = data.decode('utf-8-sig')
    else:
        try:
            text = data.decode('utf-8')
        except UnicodeDecodeError:
            encoding = locale.getpreferredencoding(False)
            try:
                text = data.decode(encoding)
            except (UnicodeDecodeError, LookupError) as exc:
                raise RuntimeError('HardeningKitty CSV encoding is not supported.') from exc
    reader = csv.DictReader(io.StringIO(text, newline=''))
    return reader.fieldnames, list(reader)


def _check_coverage(baseline_path, report_path, counts, findings, exclusions=None, benchmark=None):
    """Mark tests skipped by HardeningKitty as unknown, never as Passed.

    HardeningKitty can skip a check (e.g. a tool is missing). Such an item
    may be absent from the output CSV. Counting only present rows could give
    a misleading green result, so compare to the original finding list.
    """
    fieldnames, expected_rows = _read_csv_rows(baseline_path)
    required = {'ID', 'Category', 'Name'}
    if not fieldnames or not required.issubset(fieldnames):
        raise RuntimeError('Selected finding list has unexpected headers: %r' % (fieldnames,))
    _, actual_rows = _read_csv_rows(report_path)
    if not expected_rows:
        raise RuntimeError('Finding list is empty.')

    def control_id(row):
        return str(row.get('ID') or '').strip()

    # IDs are stable across localizations; labels/categories may be translated by
    # the installed HardeningKitty language data and are not join keys.
    actual = collections.Counter(control_id(row) for row in actual_rows)
    if any(value > 1 for value in actual.values()):
        raise RuntimeError('HardeningKitty report contains duplicate control IDs.')
    expected = collections.Counter(control_id(row) for row in expected_rows)
    if any(not key for key in expected) or any(value > 1 for value in expected.values()):
        raise RuntimeError('Selected finding list contains duplicate control IDs.')
    if actual - expected:
        raise RuntimeError('HardeningKitty report contains controls outside the selected benchmark.')
    allowed = (exclusions or {}).get(benchmark or '', {})
    if (not isinstance(allowed, dict) or
            any(not isinstance(excluded_id, str) or excluded_id not in set(expected) for excluded_id in allowed) or
            any(not isinstance(reason, str) or not reason.strip() for reason in allowed.values())):
        raise RuntimeError('intentional_exclusions must map benchmark IDs to non-empty review reasons.')
    missing = []
    for row in expected_rows:
        key = control_id(row)
        if actual[key]:
            actual[key] -= 1
        else:
            if key in allowed:
                counts['excluded'] += 1
                findings.append({'id': key, 'name': str(row.get('Name') or ''),
                                 'category': str(row.get('Category') or ''),
                                 'severity': 'not_applicable', 'result': str(allowed[key])})
            else:
                missing.append({'id': key, 'name': str(row.get('Name') or ''),
                                'category': str(row.get('Category') or ''),
                                'severity': 'unknown', 'result': 'Skipped / no CSV result'})
    if missing:
        findings.extend(missing)
        counts['unknown'] += len(missing)
        counts['total'] += len(missing)
    counts['skipped'] = len(missing)
    counts['expected'] = len(expected_rows)
    counts['compliant_percent'] = round(100.0 * counts['passed'] / counts['total'], 2) if counts['total'] else 0.0
    return counts, findings


def _status_from_counts(counts, config):
    if counts['total'] == 0 or counts['unknown'] or counts.get('ignored') or counts.get('skipped'):
        return 'ERROR'
    if counts['high']:
        return 'ERROR' if config['error_on_high'] else 'WARNING'
    if counts['medium'] or (counts['low'] and config['warn_on_low']):
        return 'WARNING'
    return 'OK'


def _shard_findings(findings, bucket_count=16):
    buckets = [[] for i in range(bucket_count)]
    for item in findings:
        # Stable shards, including empty ones: no obsolete audit keys on a later run.
        key = ('%s:%s' % (item['id'], item['name'])).encode('utf-8')
        bucket = int(hashlib.sha256(key).hexdigest()[:8], 16) % bucket_count
        buckets[bucket].append(item)
    return buckets


def _publish_audit(summary, findings, config):
    if not config.get('publish_to_wapt', True):
        return
    wapt = globals().get('WAPT')
    write = getattr(wapt, 'write_audit_data_if_changed', None)
    if not callable(write):
        raise RuntimeError('WAPT.write_audit_data_if_changed is unavailable; audit data was not published.')

    # Per-metric keys are convenient for SQL reporting on HostAuditData.
    keys = ('status', 'benchmark', 'os_build', 'os_caption', 'display_version', 'source',
            'upstream_commit', 'last_error', 'passed', 'high', 'medium', 'low', 'unknown',
            'ignored', 'not_applicable', 'excluded', 'total', 'expected', 'executed', 'skipped',
            'compliant_percent')
    for key in keys:
        try:
            write(AUDIT_SECTION, key, str(summary[key]), max_count=5, keep_days=120)
        except Exception as exc:
            raise RuntimeError('WAPT audit metric publication failed for %s.' % key) from exc

    for index, group in enumerate(_shard_findings(findings)):
        try:
            payload = json.dumps(group, ensure_ascii=False, separators=(',', ':'))
            write(AUDIT_SECTION, 'findings_%02d' % index, payload, max_count=3, keep_days=120)
        except Exception as exc:
            raise RuntimeError('WAPT finding publication failed for shard %02d.' % index) from exc

    # Unlike the stable metrics above, store one timestamped observation each run.
    write_current = getattr(wapt, 'write_audit_data', None)
    if not callable(write_current):
        raise RuntimeError('WAPT.write_audit_data is unavailable; audit timestamp was not published.')
    try:
        write_current(AUDIT_SECTION, 'last_run_utc', summary['last_run_utc'],
                       max_count=5, keep_days=120)
    except Exception as exc:
        raise RuntimeError('WAPT audit timestamp publication failed.') from exc


def _trim_reports(keep):
    if not isdir(REPORT_ROOT):
        return
    paths = [makepath(REPORT_ROOT, name) for name in os.listdir(REPORT_ROOT)
             if name.startswith('run-') and isdir(makepath(REPORT_ROOT, name))
             and not os.path.islink(makepath(REPORT_ROOT, name))]
    paths.sort(key=lambda p: os.path.getmtime(p), reverse=True)
    for path in paths[max(1, int(keep)):]:
        remove_tree(path)


def _audit_impl():
    manifest = _verify_vendor(INSTALL_ROOT, runtime=True)
    config = _load_json(makepath(INSTALL_ROOT, 'audit_config.json'))
    if config.get('source') not in ('GPO', 'Intune'):
        raise RuntimeError('audit_config.json: source must be GPO or Intune.')
    profile = str(config.get('profile', 'auto'))
    if not isinstance(config.get('error_on_high'), bool) or not isinstance(config.get('warn_on_low'), bool):
        raise RuntimeError('Invalid audit threshold settings.')
    if not isinstance(config.get('publish_to_wapt', True), bool) or not isinstance(config.get('publish_current_values', False), bool):
        raise RuntimeError('Invalid WAPT publication/privacy settings.')
    retain = config.get('retain_audit_runs', 8)
    max_log = config.get('max_findings_in_log', 15)
    if isinstance(retain, bool) or not isinstance(retain, int) or not 1 <= retain <= 100:
        raise RuntimeError('retain_audit_runs must be 1..100.')
    if isinstance(max_log, bool) or not isinstance(max_log, int) or not 0 <= max_log <= 100:
        raise RuntimeError('max_findings_in_log must be 0..100.')
    exclusions = config.get('intentional_exclusions', {})
    if not isinstance(exclusions, dict):
        raise RuntimeError('intentional_exclusions must be an object.')
    timeout = config.get('timeout_seconds', 900)
    if isinstance(timeout, bool) or not isinstance(timeout, int) or not 30 <= timeout <= 7200:
        raise RuntimeError('timeout_seconds must be 30..7200.')

    mkdirs(REPORT_ROOT)
    _secure_directory(REPORT_ROOT)
    run_id = datetime.datetime.now(datetime.timezone.utc).strftime('%Y%m%d-%H%M%S') + '-' + uuid.uuid4().hex[:8]
    run_dir = makepath(REPORT_ROOT, 'run-' + run_id)
    mkdirs(run_dir)
    _secure_directory(run_dir)
    csv_file = makepath(run_dir, 'hardeningkitty.csv')
    log_file = makepath(run_dir, 'powershell.log')
    metadata_file = makepath(run_dir, 'host.json')

    # run() is WAPT's process helper and handles timeouts and exit statuses.
    # No subprocess, shell interpolation, or endpoint Internet access.
    command = [_powershell_executable(), '-NoLogo', '-NoProfile', '-NonInteractive',
               '-File', makepath(INSTALL_ROOT, 'runner.ps1'),
               '-InstallRoot', INSTALL_ROOT, '-CsvFile', csv_file,
               '-MetadataFile', metadata_file, '-Source', config['source'], '-Profile', profile]
    with open(log_file, 'w', encoding='utf-8') as log:
        def record(line):
            text = str(line)
            log.write(text if text.endswith('\n') else text + '\n')
            log.flush()
        try:
            result = run(command, shell=False, timeout=timeout,
                         accept_returncodes=[0], on_write=record)
            if log.tell() == 0 and result:
                record(result)
        except Exception as exc:
            log.write('Execution failed: %s\n' % type(exc).__name__)
            raise RuntimeError('HardeningKitty runner failed (%s). See %s' %
                               (type(exc).__name__, log_file)) from exc

    if not isfile(csv_file) or not isfile(metadata_file):
        raise RuntimeError('HardeningKitty runner did not produce CSV and host metadata.')
    metadata = _load_json(metadata_file)
    benchmark = str(metadata.get('benchmark', ''))
    if (not benchmark.startswith('finding_list_') or not benchmark.endswith('.csv') or
            '/' in benchmark or '\\' in benchmark or '..' in benchmark):
        raise RuntimeError('Unsafe or invalid benchmark from PowerShell runner.')
    baseline = makepath(INSTALL_ROOT, 'lists', benchmark)
    if not isfile(baseline):
        raise RuntimeError('Runner selected a benchmark absent from vendor assets: %s' % benchmark)

    counts, findings = _read_report(csv_file, config.get('publish_current_values', False))
    counts, findings = _check_coverage(baseline, csv_file, counts, findings, exclusions, benchmark)
    status = _status_from_counts(counts, config)
    summary = dict(counts)
    summary.update({
        'status': status,
        'benchmark': benchmark,
        'os_build': str(metadata['build']),
        'os_caption': str(metadata.get('os_caption', '')),
        'display_version': str(metadata.get('display_version', '')),
        'source': metadata['source'],
        'upstream_commit': manifest['upstream_commit'],
        'last_error': '',
        'last_run_utc': datetime.datetime.now(datetime.timezone.utc).isoformat(),
        'report_csv': csv_file,
        'report_log': log_file,
    })
    _save_json(makepath(run_dir, 'summary.json'), summary)
    _publish_audit(summary, findings, config)
    print('HardeningKitty: %s | %s | checked=%s passed=%s high=%s medium=%s low=%s unknown=%s skipped=%s | compliant=%s%%' %
          (status, benchmark, counts['total'], counts['passed'], counts['high'],
           counts['medium'], counts['low'], counts['unknown'], counts['skipped'], counts['compliant_percent']))
    priority = {'high': 0, 'medium': 1, 'low': 2, 'unknown': 3}
    for finding in sorted(findings, key=lambda f: (priority.get(f['severity'], 9), f['id']))[:max_log]:
        print('[%s] %s | %s | %s' %
              (finding['severity'].upper(), finding['id'], finding['category'], finding['name']))
    print('Full CSV report: %s' % csv_file)
    _trim_reports(retain)
    return status


def audit():
    try:
        return _audit_impl()
    except Exception as exc:
        # Log enough detail locally, but publish only a sanitized technical error.
        print('HardeningKitty audit ERROR: %s' % exc)
        wapt = globals().get('WAPT')
        label = 'Collection failed: %s' % type(exc).__name__
        if wapt is not None:
            try:
                wapt.write_audit_data_if_changed(AUDIT_SECTION, 'status', 'ERROR',
                                                 max_count=5, keep_days=120)
                wapt.write_audit_data_if_changed(AUDIT_SECTION, 'last_error', label,
                                                 max_count=5, keep_days=120)
                wapt.write_audit_data(AUDIT_SECTION, 'last_run_utc',
                                      datetime.datetime.now(datetime.timezone.utc).isoformat(),
                                      max_count=5, keep_days=120)
            except Exception:
                pass
        try:
            config = _load_json(makepath(INSTALL_ROOT, 'audit_config.json'))
            _trim_reports(config.get('retain_audit_runs', 8))
        except Exception:
            pass
        return 'ERROR'