access-engine/examples/ops-warden-fetch/policy_package.md
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access-engine: secret-read evaluator for warden fetch checks (CUST-WP-0075)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 3775@bnt-lap001
Assistant-Session: cfacb6a5-ad5b-4f79-ac67-053e3b0d34a3
2026-10-03 08:57:11 +02:00

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7.2 KiB
Markdown

---
id: ops-warden.secret.read
name: Ops-Warden secret read (catalog fetch lanes)
namespace: ops-warden:secret-read
version: v1
status: ready
package: flexauth.ops_warden.secret_read
allow_ttl: 5m
actions:
- read
owner: team:platform-security
fixtures:
- policy_fixtures.yaml
caring:
profile: caring-0.4.0-rc2
enforce: false
canonical_roles:
- Operator
organization_relations:
- ServiceProvider
scopes:
- level: Platform
id: platform:secret-read
tenant: tenant:platform
planes:
- Secret
- Audit
capabilities:
- View
- Use
exposure_modes:
- SecretMaterial
conditions:
- PurposeBound
- TimeLimited
- Logged
restrictions:
- PrivilegeEscalationBlocked
activation:
mode: local
metadata:
source: examples/ops-warden-fetch/policy_package.md
generator: tools/gen_ops_warden_fetch.py
catalog: ops-warden/registry/routing/catalog.yaml
origin: CUST-WP-0075 (bug b792c5d0)
---
# Ops-Warden Secret Read
ops-warden's `warden access <need> --fetch/--exec` asks this package, before it
proxies a non-SSH credential read, whether `read` on `secret:<need_id>` owned by
`<owner_repo>` is allowed (ops-warden `src/warden/policy.py`
`check_fetch_policy`). ops-warden is the conduit, never the owner; the owner
system is the lane's `owner_repo`, and no secret value is in the request.
The readable set is **not authored here**. `catalog_lanes` maps each need id to
its owner system and is generated from ops-warden's routing catalog: every entry
with `status: active`, `exec_capable: true` and `lane: secret`. Regenerate with
`python3 tools/gen_ops_warden_fetch.py`; `--check` reports drift.
The set lives in the package rather than being read from registry attributes so
that a caller cannot assert its way onto a lane the registry does not know (the
engine passes caller attributes through for unregistered resources,
FLEX-DEC-2026-012).
Who may ask is enforced before this package runs: the pin's caller bindings map
every owner system to the ops-warden ServiceAccount, in `enforce` mode, so any
other caller gets HTTP 403 and an owner system absent from the bindings gets 403
as well. The package repeats the system check as `unknown_system` /
`wrong_system` for offline evaluation and defence in depth.
## Rules
```rego
import future.keywords.if
import future.keywords.in
# BEGIN GENERATED catalog_lanes (tools/gen_ops_warden_fetch.py; do not edit by hand)
catalog_lanes := {
"agent-harness-forgejo-deploy": "railiance-platform",
"binky-company-email-imap": "railiance-platform",
"binky-qonto-api": "railiance-platform",
"email-connect-transactional": "railiance-platform",
"forgejo-admin-api-token": "railiance-platform",
"issue-core-ingestion-api-key": "railiance-platform",
"openrouter-llm-connect": "railiance-platform",
"policy-nexus-forgejo-source-read": "railiance-platform",
"railiance-backup-offsite-lane": "railiance-platform",
"rapp-qonto-keycape-client": "key-cape",
"reuse-surface-hub-write-token": "railiance-platform",
"whynot-design-npm-publish": "railiance-platform",
}
# END GENERATED catalog_lanes
catalog_systems := {system | system := catalog_lanes[_]}
decision := {"effect": "allow", "reason": "secret_read_lane_matched"} if {
allowed
} else := {"effect": "deny", "reason": first_denial} if {
true
}
allowed if {
input.action == "read"
input.resource.type == "secret"
effective_tenant == "tenant:platform"
input.subject.type == "operator"
has_subject_id
need_known
catalog_lanes[need_id] == input.resource.system
resource_id_matches_need
context_owner_matches
}
default need_id := ""
need_id := input.context.need_id if {
is_string(input.context.need_id)
}
need_known if {
need_id != ""
catalog_lanes[need_id]
}
has_subject_id if {
is_string(input.subject.id)
input.subject.id != ""
}
default effective_tenant := ""
effective_tenant := input.tenant if {
is_string(input.tenant)
input.tenant != ""
} else := input.resource.tenant if {
is_string(input.resource.tenant)
input.resource.tenant != ""
} else := input.subject.tenant if {
is_string(input.subject.tenant)
input.subject.tenant != ""
}
# warden sends secret:<need_id>, or secret:<need_id>/<domain> when a domain is set.
resource_id_matches_need if {
not has_domain
input.resource.id == sprintf("secret:%s", [need_id])
}
resource_id_matches_need if {
has_domain
input.resource.id == sprintf("secret:%s/%s", [need_id, input.context.domain])
}
has_domain if {
is_string(input.context.domain)
input.context.domain != ""
}
context_owner_matches if {
input.context.owner_repo == input.resource.system
}
default first_denial := "no_matching_rule"
first_denial := "wrong_action" if {
input.action != "read"
} else := "wrong_resource_type" if {
input.resource.type != "secret"
} else := "wrong_tenant" if {
effective_tenant != "tenant:platform"
} else := "wrong_subject_type" if {
input.subject.type != "operator"
} else := "missing_subject" if {
not has_subject_id
} else := "missing_need_id" if {
need_id == ""
} else := "unknown_need" if {
not need_known
} else := "unknown_system" if {
not input.resource.system in catalog_systems
} else := "wrong_system" if {
catalog_lanes[need_id] != input.resource.system
} else := "resource_need_mismatch" if {
not resource_id_matches_need
} else := "owner_repo_mismatch" if {
not context_owner_matches
}
```
## Tests
```rego test
package flexauth.ops_warden.secret_read_test
import future.keywords.if
import data.flexauth.ops_warden.secret_read
forgejo := {
"subject": {"id": "operator", "type": "operator", "tenant": "tenant:platform"},
"action": "read",
"resource": {
"id": "secret:forgejo-admin-api-token",
"type": "secret",
"system": "railiance-platform",
"tenant": "tenant:platform"
},
"context": {"need_id": "forgejo-admin-api-token", "owner_repo": "railiance-platform", "domain": null}
}
test_forgejo_admin_read_allowed if {
secret_read.decision.effect == "allow" with input as forgejo
}
test_domain_suffix_allowed if {
secret_read.decision.effect == "allow" with input as object.union(forgejo, {
"resource": object.union(forgejo.resource, {"id": "secret:forgejo-admin-api-token/infotech"}),
"context": object.union(forgejo.context, {"domain": "infotech"}),
})
}
test_unknown_need_denied if {
secret_read.decision.reason == "unknown_need" with input as object.union(forgejo, {
"resource": object.union(forgejo.resource, {"id": "secret:no-such-need"}),
"context": object.union(forgejo.context, {"need_id": "no-such-need"}),
})
}
test_unknown_system_denied if {
secret_read.decision.reason == "unknown_system" with input as object.union(forgejo, {
"resource": object.union(forgejo.resource, {"system": "ops-warden"}),
"context": object.union(forgejo.context, {"owner_repo": "ops-warden"}),
})
}
test_wrong_action_denied if {
secret_read.decision.reason == "wrong_action" with input as object.union(forgejo, {"action": "write"})
}
test_spoofed_domain_denied if {
secret_read.decision.reason == "resource_need_mismatch" with input as object.union(forgejo, {
"resource": object.union(forgejo.resource, {"id": "secret:forgejo-admin-api-token/other"}),
"context": object.union(forgejo.context, {"domain": "infotech"}),
})
}
```