tegwick
c96b0c6d88
Assistant: codex Assistant-Model: gpt-6.1-sol Assistant-Session: 01a126e1-76f8-7643-8cf3-e93336539ade
176 lines
9.1 KiB
Python
176 lines
9.1 KiB
Python
"""Supervised receipt bookkeeping, not an authenticated approval provider."""
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import datetime
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import fcntl
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import hashlib
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import json
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import os
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import re
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from pathlib import Path
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import stat
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import uuid
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FOUNDER = {'kind': 'person', 'sub': 'uid=platform-root,ou=people,dc=netkingdom,dc=local'}
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MEMO_ID = 'infd-20261011-purpose-overlay-r1'
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PROPOSAL = 'INFD-WP-0009-T04/purpose-overlay-v1'
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PHASES = ('drill-copy-rescue-r1', 'offline-verify', 'cleanup-offline',
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'cutover-backup', 'cutover-copy', 'release', 'verify', 'rollback', 'rollback-verify')
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def require(value, reason):
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if not value:
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raise ValueError(reason)
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def sha(path):
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digest = hashlib.sha256()
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with Path(path).open('rb') as stream:
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for block in iter(lambda: stream.read(1024**2), b''):
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digest.update(block)
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return digest.hexdigest()
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def private(path, directory=False):
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info = Path(path).lstat()
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require((stat.S_ISDIR(info.st_mode) if directory else stat.S_ISREG(info.st_mode))
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and info.st_uid == os.getuid() and stat.S_IMODE(info.st_mode) == (0o700 if directory else 0o600)
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and (directory or info.st_nlink == 1), 'private owned custody required')
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def authority(receipt, outcome, memo_sha, source_revision, phase, now=None):
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"""Root must freshly verify native outcome at fixed ORIGIN outside this helper.
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Receipt files/flags are not signed grants. This function checks the exact
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supervised receipt relation; existing harness/founder authority remains the
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actual permission boundary. It never authenticates a caller as human.
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"""
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now = now or datetime.datetime.now(datetime.timezone.utc)
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require(phase in PHASES, 'fixed phase required')
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require(receipt.get('proposal_id') == PROPOSAL and receipt.get('memo_id') == MEMO_ID
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and receipt.get('memo_version') == 2 and receipt.get('memo_sha256') == memo_sha
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and receipt.get('source_revision') == source_revision
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and receipt.get('activation') == 'APPROVED'
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and receipt.get('authority_mode') == 'ADMINISTER'
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and receipt.get('target') == 'realm:kubernetes/railiance01/informed-decision'
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and receipt.get('verification_method') == 'root-fixed-origin-native-readback'
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and receipt.get('runtime_authenticated_grant') is False
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and receipt.get('outcome_query') == '/lifecycle/memos/infd-20261011-purpose-overlay-r1/outcomes?version=2',
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'exact externally verified supervised receipt required')
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verified = datetime.datetime.fromisoformat(receipt['verified_at'].replace('Z', '+00:00'))
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require(verified.tzinfo is not None and 0 <= (now - verified).total_seconds() <= 120,
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'fresh root native readback required before every phase')
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deadline = datetime.datetime.fromisoformat('2026-10-12T23:59:59+00:00')
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require(now < deadline, 'approved execution window expired')
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require(outcome.get('memo_id') == MEMO_ID and outcome.get('review', {}).get('stale') is False
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and outcome['review'].get('intake_state') == 'ready', 'native review is not ready/current')
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review_id = outcome['review']['memo_id']
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require(review_id == receipt.get('review_memo_id'), 'native review identity changed')
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accepted = [x for x in outcome.get('dispositions', [])
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if x.get('submission_state') == 'confirmed'
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and x.get('disposition', {}).get('verb') == 'accept'
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and x['disposition'].get('memo_version') == 1]
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require(len(accepted) == 1, 'one confirmed founder acceptance required')
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accepted = accepted[0]['disposition']
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require(accepted.get('actor') == FOUNDER and accepted.get('memo_id') == review_id
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and accepted.get('approval_id') == receipt.get('approval_id')
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and accepted.get('id') == receipt.get('disposition_id')
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and accepted.get('at') == receipt.get('accepted_at'), 'exact founder disposition mismatch')
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require(re.fullmatch(r'[a-f0-9-]{36}', accepted['approval_id']) is not None
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and re.fullmatch(r'disp-[a-f0-9-]{36}', accepted['id']) is not None
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and re.fullmatch(r'review-[a-f0-9-]{36}', review_id) is not None,
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'native disposition identifiers are malformed')
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accepted_at = datetime.datetime.fromisoformat(accepted['at'].replace('Z', '+00:00'))
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require(accepted_at.tzinfo is not None and accepted_at <= verified, 'acceptance time not bounded')
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return {key: receipt[key] for key in ('approval_id', 'disposition_id', 'accepted_at', 'verified_at')}
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def original_anchor(parent, expected, backup_result, original_identity):
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"""Read only sanitized original journal; never rewrite/synthesize its phases."""
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path = Path(parent) / 'execution-journal.json'
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private(path)
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require(sha(path) == expected['original_journal_sha256'], 'original journal bytes changed')
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original = json.loads(path.read_text())
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require(original.get('identity') == original_identity, 'original approved identity changed')
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phases = original.get('phases', {})
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require(set(phases) == {'drill-backup', 'drill-copy'}, 'unexpected original action or rollout')
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for name, fields in expected['phase_metadata'].items():
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require(all(phases[name].get(key) == value for key,value in fields.items()),
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'original failed/completed attempt identity changed')
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require(phases['drill-backup'].get('result') == backup_result
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and backup_result.get('all_checks_pass') is True
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and phases['drill-copy'].get('result', {}).get('all_checks_pass') is False,
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'original backup/copy outcome changed')
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require(backup_result.get('snapshot_sha256') == expected['snapshot_sha256']
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and backup_result.get('snapshot_bytes') == expected['snapshot_bytes']
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and backup_result.get('pod_uid') == 'e8561ae0-4b09-4455-924d-64c27b625fc7',
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'original frozen snapshot identity changed')
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require(sha(path) == expected['original_journal_sha256'], 'original journal changed during read')
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return {'original_journal_sha256': expected['original_journal_sha256'],
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'original_copy_attempt_id': phases['drill-copy']['attempt_id'],
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'original_backup_attempt_id': phases['drill-backup']['attempt_id'],
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'backup_result': backup_result, 'old_uncertain_phase_retained': True}
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class Journal:
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def __init__(self, parent, identity):
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self.parent = Path(parent)
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private(self.parent, directory=True)
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self.path = self.parent / 'rescue-execution-journal-r1.json'
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self.lock = os.open(self.parent / 'rescue-execution-r1.lock', os.O_CREAT | os.O_NOFOLLOW | os.O_RDWR, 0o600)
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fcntl.flock(self.lock, fcntl.LOCK_EX | fcntl.LOCK_NB)
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private(self.parent / 'rescue-execution-r1.lock')
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if self.path.exists():
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private(self.path)
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self.data = json.loads(self.path.read_text())
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require(self.data['identity'] == identity, 'journal case/source identity changed')
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else:
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self.data = {'identity': identity, 'phases': {}}
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self.save()
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def save(self):
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temporary = self.parent / 'execution-journal.new'
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fd = os.open(temporary, os.O_CREAT | os.O_EXCL | os.O_NOFOLLOW | os.O_WRONLY, 0o600)
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try:
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with os.fdopen(fd, 'w') as stream:
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json.dump(self.data, stream, indent=2)
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stream.write('\n')
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stream.flush()
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os.fsync(stream.fileno())
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os.replace(temporary, self.path)
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directory = os.open(self.parent, os.O_DIRECTORY | os.O_RDONLY)
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try:
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os.fsync(directory)
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finally:
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os.close(directory)
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except BaseException:
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# Retain evidence rather than overwriting an uncertain durable intent.
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raise
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def start(self, phase, approval):
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require(phase not in self.data['phases'], 'already attempted phase; no retry')
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require(phase in PHASES, 'fixed rescue or remaining phase required')
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predecessors = dict(zip(PHASES[1:7], PHASES[:6]))
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predecessors['rollback-verify'] = 'rollback'
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if phase in predecessors:
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require(self.data['phases'].get(predecessors[phase], {}).get('state') == 'COMPLETE',
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'preceding phase is not verified complete')
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if phase == 'rollback':
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require('release' in self.data['phases'], 'rollback requires a recorded release attempt')
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self.data['phases'][phase] = {'state': 'RUNNING', 'approval': approval,
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'attempt_id': str(uuid.uuid4()),
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'started_at': datetime.datetime.now(datetime.timezone.utc).isoformat()}
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self.save()
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def note(self, phase, key, value):
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require(self.data['phases'][phase]['state'] == 'RUNNING', 'phase intent missing')
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self.data['phases'][phase][key] = value
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self.save()
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def finish(self, phase, result):
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entry = self.data['phases'][phase]
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require(entry['state'] == 'RUNNING', 'phase intent missing')
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entry['result'] = result
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entry['state'] = 'COMPLETE' if result.get('all_checks_pass') is True else 'UNCERTAIN'
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self.save()
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def close(self):
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os.close(self.lock)
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