railiance-platform/tests/test_custody_contract.py
codex 30e6edc236
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Add versioned ephemeral custody lifecycle
Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a02669-87ee-7a31-b111-edc95a16e0fa
2026-08-22 21:56:42 +02:00

248 lines
10 KiB
Python

from __future__ import annotations
import copy
import importlib.util
import json
import sys
import unittest
from datetime import UTC, datetime
from pathlib import Path
ROOT = Path(__file__).resolve().parents[1]
SCRIPTS = ROOT / "scripts"
if str(SCRIPTS) not in sys.path:
sys.path.insert(0, str(SCRIPTS))
import custody_contract as module
NOW = datetime(2026, 8, 22, 22, 1, tzinfo=UTC)
def projection_contract() -> dict:
return {
"interface": module.CONTRACT_INTERFACE,
"version": 1,
"workplan_id": module.WORKPLAN_ID,
"engagement_id": "WH-ENG-20260822-AUDIT-E2-03",
"status": "approved",
"engagement_contract_sha256": "1" * 64,
"target": {
"id": "audit-core",
"namespace": "audit-core",
"deployment": "audit-core",
"container": "audit-core",
"sender_external_secret": "audit-core-senders",
"revision": "2" * 40,
"image_digest": "sha256:" + "3" * 64,
"contract_sha256": "4" * 64,
},
"runner": {
"namespace": "whitehat",
"service_account": "whitehat-runner",
"secret_name": "whitehat-e2-audit-credentials",
"mount_root": "/var/run/secrets/whitehat",
"manifest_sha256": "5" * 64,
},
"window": {
"starts_at": "2026-08-22T22:00:00Z",
"projection_cutoff": "2026-08-22T22:03:00Z",
"expires_at": "2026-08-22T22:15:00Z",
},
"authority": {
"remote": "railiance01",
"registry_path": "platform/workloads/audit-core/senders",
"registry_field": "senders.json",
"kv_mount": "platform",
"kv_prefix": "engagements/WH-ENG-20260822-AUDIT-E2-03/audit-core",
"eso_service_account": "external-secrets",
"eso_namespace": "external-secrets",
},
"identities": [
{
"handle": "token-a",
"role": "attacker",
"sender_name": "whitehat-e2-a-20260822-03",
"tenant": "tenant:trial:whitehat-a-20260822-03",
"mount_path": "/var/run/secrets/whitehat/token-a",
"may_read": True,
"may_write": True,
},
{
"handle": "token-b",
"role": "owner",
"sender_name": "whitehat-e2-b-20260822-03",
"tenant": "tenant:trial:whitehat-b-20260822-03",
"mount_path": "/var/run/secrets/whitehat/token-b",
"may_read": True,
"may_write": True,
},
],
}
def broker_receipt(contract: dict) -> dict:
return {
"interface": module.BROKER_INTERFACE,
"version": 1,
"workplan_id": module.WORKPLAN_ID,
"owner": module.BROKER_OWNER,
"reviewer": "whitehat-owner",
"decision": "approve",
"created_at": "2026-08-22T21:50:00Z",
"engagement_id": contract["engagement_id"],
"target_id": contract["target"]["id"],
"projection_contract_digest": module.contract_digest(contract),
"projection_receipt_interface": module.PROJECTION_INTERFACE,
"interface_artifacts": module.interface_artifacts(),
"required_roles": ["attacker", "owner"],
"mount_paths": sorted(item["mount_path"] for item in contract["identities"]),
"adapter": {
"repo": "whitehat-security",
"revision": "6" * 40,
"path": "src/whitehat_security/platform_custody.py",
"sha256": "7" * 64,
"tests_passed": True,
},
"cleanup_request_supported": True,
"secret_values_observed": False,
}
def projection_receipt(contract: dict) -> dict:
base = {
"interface": module.PROJECTION_INTERFACE,
"version": 1,
"workplan_id": module.WORKPLAN_ID,
"state": "projected",
"lease_id": "custody:" + "8" * 32,
"engagement_id": contract["engagement_id"],
"target": {
"id": contract["target"]["id"],
"revision": contract["target"]["revision"],
"image_digest": contract["target"]["image_digest"],
},
"projection_contract_digest": module.contract_digest(contract),
"broker_receipt_digest": module.digest(broker_receipt(contract)),
"projected_at": "2026-08-22T22:02:00Z",
"expires_at": contract["window"]["expires_at"],
"identities": sorted(
(
{
"handle": item["handle"],
"role": item["role"],
"sender_name": item["sender_name"],
"mount_path": item["mount_path"],
}
for item in contract["identities"]
),
key=lambda item: item["handle"],
),
"resources": {
"names": module.resource_names(contract),
"uids": {"store": "uid-store", "external_secret": "uid-es", "mounted_secret": "uid-secret"},
},
"cleanup_authority": "railiance-platform",
"secret_values_observed": False,
}
return {**base, "receipt_id": "sha256:" + module.digest(base)}
class CustodyContractTests(unittest.TestCase):
def test_contract_validates_and_derives_hash_only_resource_names(self) -> None:
contract = projection_contract()
self.assertIs(contract, module.validate_projection_contract(contract))
names = module.resource_names(contract)
self.assertTrue(all(name.startswith("custody-") for key, name in names.items() if key != "external_secret"))
self.assertNotIn("E2-03", json.dumps(names))
self.assertEqual(64, len(module.contract_digest(contract)))
def test_contract_rejects_stale_prefix_duplicate_tenant_and_long_window(self) -> None:
contract = projection_contract()
contract["authority"]["kv_prefix"] = "engagements/WH-ENG-20260822-AUDIT-E2-02/audit-core"
with self.assertRaises(module.ContractError):
module.validate_projection_contract(contract)
contract = projection_contract()
contract["identities"][1]["tenant"] = contract["identities"][0]["tenant"]
with self.assertRaises(module.ContractError):
module.validate_projection_contract(contract)
contract = projection_contract()
contract["window"]["expires_at"] = "2026-08-22T22:16:00Z"
with self.assertRaises(module.ContractError):
module.validate_projection_contract(contract)
def test_broker_receipt_is_bound_to_contract_and_current_artifacts(self) -> None:
contract = projection_contract()
receipt = broker_receipt(contract)
self.assertIs(receipt, module.validate_broker_receipt(receipt, contract, now=NOW))
stale = copy.deepcopy(receipt)
stale["projection_contract_digest"] = "0" * 64
with self.assertRaises(module.ContractError):
module.validate_broker_receipt(stale, contract, now=NOW)
stale = copy.deepcopy(receipt)
stale["interface_artifacts"][next(iter(stale["interface_artifacts"]))] = "0" * 64
with self.assertRaises(module.ContractError):
module.validate_broker_receipt(stale, contract, now=NOW)
def test_broker_message_requires_whitehat_origin_and_exact_subject(self) -> None:
contract = projection_contract()
receipt = broker_receipt(contract)
message = {
"from_agent": module.BROKER_OWNER,
"to_agent": "railiance-platform",
"subject": module.broker_subject(receipt),
"body": module.canonical_json(receipt),
}
self.assertEqual(receipt, module.parse_broker_message(message, contract, now=NOW))
message["from_agent"] = "coding-agent"
self.assertIsNone(module.parse_broker_message(message, contract, now=NOW))
malformed = {
"from_agent": module.BROKER_OWNER,
"to_agent": "railiance-platform",
"subject": module.BROKER_SUBJECT_PREFIX + "/malformed",
"body": "{}",
}
self.assertIsNone(module.parse_broker_message(malformed, contract, now=NOW))
def test_projection_receipt_canonical_id_and_scope_are_enforced(self) -> None:
contract = projection_contract()
receipt = projection_receipt(contract)
self.assertIs(receipt, module.validate_projection_receipt(receipt, contract))
changed = copy.deepcopy(receipt)
changed["resources"]["uids"]["mounted_secret"] = "replacement"
with self.assertRaises(module.ContractError):
module.validate_projection_receipt(changed, contract)
value_bearing = copy.deepcopy(receipt)
value_bearing["token"] = "never-allowed"
with self.assertRaises(module.ContractError):
module.validate_projection_receipt(value_bearing, contract)
def test_cleanup_receipt_is_bound_to_projection_lease(self) -> None:
contract = projection_contract()
projection = projection_receipt(contract)
cleanup = {
"interface": module.CLEANUP_INTERFACE,
"version": 1,
"workplan_id": module.WORKPLAN_ID,
"state": "cleaned",
"lease_id": projection["lease_id"],
"engagement_id": contract["engagement_id"],
"projection_receipt_id": projection["receipt_id"],
"cleaned_at": "2026-08-22T22:14:00Z",
"removed_resources": ["custody-resource"],
"target_ready": True,
"secret_values_observed": False,
}
self.assertIs(cleanup, module.validate_cleanup_receipt(cleanup, projection, contract))
cleanup["lease_id"] = "custody:" + "0" * 32
with self.assertRaises(module.ContractError):
module.validate_cleanup_receipt(cleanup, projection, contract)
def test_all_published_schemas_are_valid_json(self) -> None:
for relative in module.INTERFACE_ARTIFACTS:
value = json.loads((ROOT / relative).read_text(encoding="utf-8"))
self.assertEqual("https://json-schema.org/draft/2020-12/schema", value["$schema"])
if __name__ == "__main__":
unittest.main()