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hyperhive/swarm-nats-auth/src/policy.rs

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94 KiB
Rust

//! What an admitted client is allowed to do.
//!
//! [`crate::introspect`] answers *whether* to admit and *as whom*. This
//! answers *what that identity may touch* — the two are deliberately separate
//! decisions: admission is the `IdP`'s, authorisation is the swarm's.
//!
//! # Deny is the default, and that is a choice with a measurement behind it
//!
//! A client whose id matches no rule gets **no grant at all**, not an
//! unrestricted one. Every other shape here fails open: an unmatched client
//! that kept today's unscoped grant would make the whole policy advisory, and
//! the failure would be silent. Denying costs a loud refusal the first time a
//! new consumer appears, which is a config line to fix.
//!
//! Each subject set below is *minimal by removal*, and carries its own note
//! saying what breaks without it — the reasoning lives next to the list it
//! constrains rather than in one block here, because that is where a reader
//! about to edit the list will meet it.
/// The subjects an admitted client may publish and subscribe to.
#[derive(Debug, PartialEq, Eq)]
pub struct Permissions {
/// Subjects allowed for publish. Never empty: an empty allow-list is a
/// grant that can do nothing, which is a denial wearing a grant's shape.
pub publish: Vec<String>,
/// Subjects allowed for subscribe, or `None` for every subject in the
/// account.
///
/// Every grant [`Policy`] makes is `Some`: the subjects that client
/// subscribes to plus its own reply inbox. Never `Some(vec![])`: NATS
/// reads an empty allow-list as no restriction at all.
pub subscribe: Option<Vec<String>>,
/// How long the client may answer a request it received, on that
/// request's reply subject, or `None` for no such allowance. NATS'
/// `allow_responses`: the reply subject need not be in `publish`.
pub responses: Option<std::time::Duration>,
}
/// Which client ids get which permissions.
///
/// Constructed from configuration so that adding a subject a hive may publish
/// — a second event stream, say — is a deployment change rather than a change
/// to this responder.
#[derive(Debug, Clone)]
pub struct Policy {
hive_prefix: String,
agent_suffix: String,
bucket: String,
readers: Vec<String>,
extra_hive_subjects: Vec<String>,
agent_token_subjects: Vec<String>,
review_classifiers: Vec<String>,
builders: Vec<String>,
claude_logins: Vec<String>,
}
/// Placeholder replaced with the hive's own name in `extra_hive_subjects`.
const HIVE_PLACEHOLDER: &str = "{hive}";
/// Placeholder replaced with the agent's own name in `agent_token_subjects`.
const AGENT_PLACEHOLDER: &str = "{agent}";
impl Policy {
/// `hive_prefix` is the client-id prefix that marks a hive and
/// `agent_suffix` what a hive's agent containers carry **on top of** it —
/// `hive-<name>` and `hive-<name>-agent`. `bucket` is the KV bucket hives
/// report status in, `readers` the client ids allowed to read every hive's
/// key, and `extra_hive_subjects` additional subjects a hive may publish to
/// (with `{hive}` standing for the hive's own name).
///
/// The agent id is deliberately the hive's id extended, not a second
/// top-level prefix: `agent-<name>` reads as *the agent called `<name>`*,
/// which is the one thing this identity does not carry.
///
/// # Errors
///
/// An extra subject with no `{hive}` in it is refused. Such a template
/// expands to the **same** subject for every hive, which is not a per-hive
/// namespace — it is the absence of one, arrived at through the option
/// whose only purpose is to provide one. Returning a `Result` rather than
/// checking at the call site is deliberate: it makes an unscoped policy
/// unconstructible instead of merely unlikely.
///
/// An empty `agent_suffix` is refused for the same reason: every hive id
/// would also parse as its own agent id, and the arms are tried in order,
/// so the overlap does not error at match time — it silently hands one
/// principal the other's grant.
pub fn new(
hive_prefix: String,
agent_suffix: String,
bucket: String,
readers: Vec<String>,
extra_hive_subjects: Vec<String>,
) -> anyhow::Result<Self> {
if let Some(bad) = extra_hive_subjects
.iter()
.find(|s| !s.contains(HIVE_PLACEHOLDER))
{
anyhow::bail!(
"--hive-publish-subject {bad:?} contains no {HIVE_PLACEHOLDER}: every hive \
would be granted that exact subject, so it is a shared channel rather than \
a per-hive namespace"
);
}
// Checked here rather than trusted from nix, because these are two
// flags and nothing downstream compares them. An agent id is a hive id
// plus this suffix, so an empty one makes `strip_suffix` succeed on
// every hive id and the two principals become the same string. The
// agent arm runs first and refuses, so every hive would be refused as
// its own agents' client.
if agent_suffix.is_empty() {
anyhow::bail!(
"--agent-client-suffix is empty: an agent id is a hive id plus this suffix, \
so every hive would also parse as its own agents' client and be refused"
);
}
Ok(Self {
hive_prefix,
agent_suffix,
bucket,
readers,
extra_hive_subjects,
agent_token_subjects: Vec::new(),
review_classifiers: Vec::new(),
builders: Vec::new(),
claude_logins: Vec::new(),
})
}
/// Set the subjects an agent that proved its own credential may publish
/// to, with `{agent}` standing for its name.
///
/// # Errors
///
/// A template with no `{agent}` in it is refused: it would be one subject
/// shared by every agent in the swarm rather than the agent's own.
pub fn with_agent_token_subjects(mut self, subjects: Vec<String>) -> anyhow::Result<Self> {
if let Some(bad) = subjects.iter().find(|s| !s.contains(AGENT_PLACEHOLDER)) {
anyhow::bail!(
"--agent-token-publish-subject {bad:?} contains no {AGENT_PLACEHOLDER}: every \
agent in the swarm would be granted that exact subject"
);
}
self.agent_token_subjects = subjects;
Ok(self)
}
/// Set the client ids that answer the review classifier's try-outs.
#[must_use]
pub fn with_review_classifiers(mut self, clients: Vec<String>) -> Self {
self.review_classifiers = clients;
self
}
/// Set the client ids that answer the swarm builder's build requests.
#[must_use]
pub fn with_builders(mut self, clients: Vec<String>) -> Self {
self.builders = clients;
self
}
/// Set the client ids that answer the claude login minter's requests.
#[must_use]
pub fn with_claude_logins(mut self, clients: Vec<String>) -> Self {
self.claude_logins = clients;
self
}
/// The permissions for an agent whose own credential was verified, or
/// `None` when none are configured.
///
/// Keyed on the agent alone: its identity is not tied to a hive. `agent`
/// must already be a single `[A-Za-z0-9_-]` segment, which the token parse
/// guarantees, so it cannot widen a subject with `.`, `*` or `>`.
pub fn agent_token_permissions(&self, agent: &str) -> Option<Permissions> {
let mut publish: Vec<String> = self
.agent_token_subjects
.iter()
.map(|s| s.replace(AGENT_PLACEHOLDER, agent))
.collect();
if publish.is_empty() {
return None;
}
// The operator list (`swarm_queue_client::operator_profiles`), which
// every agent renders into its system prompt: one direct get on the
// bucket's one key, so no `STREAM.INFO`, no `CONSUMER.CREATE` and no
// `$KV.` write. Every agent reads the same key, so it is no `{agent}`
// template and is granted here rather than through
// `--agent-token-publish-subject`.
publish.push(swarm_queue_client::operator_profiles::direct_get_subject());
Some(Permissions {
publish,
subscribe: Some(vec![
format!("{}.>", swarm_queue_client::agent_inbox_prefix(agent)),
swarm_queue_client::agent_input_subject(agent),
swarm_queue_client::agent_control_subject(agent),
]),
// The controller sends a control command as a request, and the
// harness answers it. `allow_responses` lets it reply to that one
// request without a publish grant that would name the
// controller's inbox, which the agent has no business reaching.
// Operator text input is sent the same way but never answered
// (see `hive-agent`'s `swarm_input`), so the reply right is
// unused there.
responses: Some(swarm_queue_client::AGENT_CONTROL_REPLY_DEADLINE),
})
}
/// The permissions for `client_id`, or `None` when no rule matches.
///
/// `None` is a denial. It is not "grant nothing and let them connect":
/// a connected client with no permissions still holds a slot and still
/// looks admitted in the logs, which is a worse answer than a refusal.
pub fn permissions(&self, client_id: &str) -> Option<Permissions> {
// ⚠️ THE AGENT ARM RUNS FIRST, AND THE ORDER IS LOAD-BEARING. An agent
// id is a hive id with a suffix, so `hive-foo-agent` satisfies the hive
// arm too — it strips to the hive `foo-agent`. Hive-first would
// therefore hand every agent its hive's grant, including writing that
// hive's status key, and nothing would report it: the client
// authenticates, connects, and is simply able to do more than it
// should. Most specific wins, so the more specific test is the one
// that has to be asked first.
//
// A hive's shared agent client is refused outright. Agents connect with
// their own credential (`Self::agent_token_permissions`); this identity
// names the hive and never the agent (see `Self::agent_hive`), so any
// grant to it would let one agent publish as its siblings.
if self.agent_hive(client_id).is_some() {
return None;
}
if let Some(hive) = self.hive_name(client_id) {
return Some(Permissions {
publish: self.hive_subjects(hive),
subscribe: Some(Self::hive_subscribe(client_id, hive)),
responses: None,
});
}
if self.readers.iter().any(|r| r == client_id) {
return Some(Permissions {
publish: self.reader_subjects(),
subscribe: Some(Self::reader_subscribe(client_id)),
// The answer to a hive's permissions import. NATS lets it
// answer only a message it received, once.
responses: Some(swarm_queue_client::agent_permissions::IMPORT_REPLY_DEADLINE),
});
}
if self.review_classifiers.iter().any(|c| c == client_id) {
return Some(Self::review_classifier_permissions(client_id));
}
if self.builders.iter().any(|c| c == client_id) {
return Some(Self::builder_permissions(client_id));
}
if self.claude_logins.iter().any(|c| c == client_id) {
return Some(Self::claude_login_permissions(client_id));
}
None
}
/// What the review classifier may do: hear try-out requests and answer
/// each on its reply subject, for as long as a run may take.
///
/// Its publish list is its own inbox, which reaches no other client:
/// NATS reads an empty allow-list as every subject, so the list carries
/// one entry even though the answers go out under `responses`.
fn review_classifier_permissions(client_id: &str) -> Permissions {
Permissions {
publish: vec![Self::inbox(client_id)],
subscribe: Some(vec![
swarm_queue_client::review_classifier::SUBJECT.to_owned(),
Self::inbox(client_id),
]),
responses: Some(swarm_queue_client::review_classifier::RUN_DEADLINE),
}
}
/// What the builder may do: hear build and archetype evaluation requests
/// and answer each on its reply subject, for as long as a build may take.
/// Its publish list is its own inbox, for
/// [`Self::review_classifier_permissions`]' reason.
fn builder_permissions(client_id: &str) -> Permissions {
Permissions {
publish: vec![Self::inbox(client_id)],
subscribe: Some(vec![
swarm_wire::builder::SUBJECT.to_owned(),
swarm_wire::builder::ARCHETYPES_SUBJECT.to_owned(),
Self::inbox(client_id),
]),
responses: Some(swarm_wire::builder::REPLY_DEADLINE),
}
}
/// What the claude login minter may do: hear login steps and answer each
/// on its reply subject. Its publish list is its own inbox, for
/// [`Self::review_classifier_permissions`]' reason.
fn claude_login_permissions(client_id: &str) -> Permissions {
Permissions {
publish: vec![Self::inbox(client_id)],
subscribe: Some(vec![
swarm_wire::claude_login::SUBJECT.to_owned(),
Self::inbox(client_id),
]),
responses: Some(swarm_wire::claude_login::REPLY_DEADLINE),
}
}
/// What a hive may subscribe to: the two events the controller sends it,
/// and its own reply inbox.
///
/// The inbox carries every `JetStream` reply and the wanted-bucket watch,
/// whose consumer delivers to a fresh inbox subject. The client sets the
/// matching prefix in `swarm_queue_client::connect`. A refused subscribe
/// is reported on the connection, not to the caller, so a subject missing
/// here shows up as a hive that silently stops hearing it.
fn hive_subscribe(client_id: &str, hive: &str) -> Vec<String> {
vec![
swarm_queue_client::KNOWLEDGE_SUBJECT.to_owned(),
swarm_queue_client::deploy_subject(hive),
Self::inbox(client_id),
]
}
/// What a reader may subscribe to: every agent's terminal, its
/// subagents' terminals and its turn state, which the controller relays
/// to swarm-ui, every hive's permissions import, and its own reply inbox.
///
/// The three families are the publishers' (`hive-agent`'s `swarm_term`
/// and `swarm_agent_state`, `swarm_queue_client::subagent_term`), spelled
/// by the same `swarm_queue_client` helpers. Operator input, deploys and
/// knowledge are absent: the reader publishes those.
fn reader_subscribe(client_id: &str) -> Vec<String> {
vec![
swarm_queue_client::term_subject_wildcard(),
swarm_queue_client::subagent_term::subject_wildcard(),
swarm_queue_client::agent_state_subject_wildcard(),
swarm_queue_client::agent_permissions::import_subject_wildcard(),
Self::inbox(client_id),
]
}
fn inbox(client_id: &str) -> String {
format!("{}.>", swarm_queue_client::client_inbox_prefix(client_id))
}
/// The hive a client id names, when it names one.
///
/// The prefix is configuration, not a pattern this module guesses at: the
/// authelia client is `hive-<name>` while the KV key is the bare `<name>`,
/// and stripping by eye is how a client id that merely *looks*
/// hive-shaped ends up with a hive's permissions. An id that is the prefix
/// and nothing else names no hive and is refused — `$KV.<bucket>.` is not
/// a narrower subject than `$KV.<bucket>.<name>`, it is a different one.
///
/// # This matches the prefix; it does not verify the roster
///
/// A client id is a hive here because it *starts with the prefix*, not
/// because it appears in `services.hyperhive.swarm.hives`. This responder
/// runs inside a container and has no view of the roster, so an
/// operator-declared client called `hive-anything` would be granted
/// `$KV.<bucket>.anything` — a key no real hive owns, which the controller
/// renders as a hive it does not recognise.
///
/// Passing the roster in would close that, and would also be a **second
/// place deciding who may connect as what**, which `crate::introspect`'s
/// docs argue against for the same reason admission lives in one place.
/// The prefix is a contract with `swarm-authelia.nix`, and this is the end
/// of it that can be checked from in here.
fn hive_name<'a>(&self, client_id: &'a str) -> Option<&'a str> {
client_id
.strip_prefix(&self.hive_prefix)
.filter(|name| !name.is_empty())
}
/// The hive whose agents a client id names, when it names one.
///
/// [`Self::hive_name`]'s caveats all apply — this is that parse with the
/// suffix stripped as well, so `hive-foo-agent` answers `foo`. Two more on
/// top:
///
/// - The agent client is minted per **hive**, so this answers *whose
/// agents*, never *which agent*. Two agents on one hive are
/// indistinguishable here — not a gap in the parsing but the identity
/// itself, which does not carry the agent.
/// - A hive genuinely named `foo-agent` mints `hive-foo-agent` and is
/// therefore **indistinguishable from hive `foo`'s agents** right here.
/// Unguardable from inside this responder, which has no roster (see
/// [`Self::hive_name`]) — `swarm-authelia.nix` asserts it at eval, where
/// the roster is known, so the deployment fails to build rather than
/// minting two principals with one id.
fn agent_hive<'a>(&self, client_id: &'a str) -> Option<&'a str> {
client_id
.strip_prefix(&self.hive_prefix)?
.strip_suffix(&self.agent_suffix)
.filter(|name| !name.is_empty())
}
fn stream(&self) -> String {
format!("KV_{}", self.bucket)
}
/// The stream backing one hive's wanted-state bucket.
///
/// Derived from the crate's own name function rather than from a
/// configurable bucket name: `wanted::bucket` is what the writer and the
/// reader both call, so a flag here would let two deployments disagree
/// about a name they must share.
fn wanted_stream(hive: &str) -> String {
format!("KV_{}", swarm_queue_client::wanted::bucket(hive))
}
/// The stream backing the per-agent status bucket.
///
/// Same shape and same reason as [`Self::wanted_stream`]: derived from
/// the crate constant rather than a third configurable bucket name.
fn agent_status_stream() -> String {
format!("KV_{}", swarm_queue_client::agent_status::BUCKET)
}
/// What *any* `JetStream` client must be able to ask before it can do
/// anything at all, bucket-specific or not.
///
/// Both were measured from the server's own refusals, not reasoned about:
/// a grant carrying every bucket-specific subject and neither of these
/// cannot even create the bucket — the client times out on `$JS.API.INFO`
/// long before it reaches a subject that was granted.
///
/// - `$JS.API.INFO` — account-level `JetStream` info, requested on connect.
/// - `$JS.API.STREAM.NAMES` — how a client finds the stream backing a
/// bucket. It lets a client enumerate stream names in the account, which
/// in an account holding one bucket discloses a name both ends already
/// share.
///
/// 🩸 Earlier measurements missed both, because they either granted
/// `$JS.API.>` wholesale or ran against a bucket the *setup* had already
/// created while unscoped. A minimum established against an existing
/// bucket is not the minimum for making one.
fn jetstream_minimum() -> [String; 2] {
["$JS.API.INFO".to_owned(), "$JS.API.STREAM.NAMES".to_owned()]
}
/// Creating the bucket, which **both** ends need.
///
/// `swarm_queue_client::status::open_or_create` is called by the hive that
/// writes and the controller that reads, because either may arrive first
/// on a fresh swarm — a bucket that must pre-exist turns "deployed in the
/// wrong order" into a permanent, silent absence of data. Whichever
/// connects first therefore has to be able to create it.
///
/// Narrower than it looks: this is `CREATE` on one named stream, not
/// `UPDATE` and not the `$JS.API.>` wildcard. Measured rather than
/// assumed — a hive holding this grant and running `stream edit` leaves
/// the stream's config untouched, and no `$JS.API.STREAM.UPDATE` is ever
/// published. Worth stating because the failure it would hide is quiet: a
/// hive able to reshape the shared bucket could set `MaxMsgs: 1` and evict
/// every other hive's status without ever touching `STREAM.DELETE`, and
/// per-key scoping would still look intact.
fn create(&self) -> String {
format!("$JS.API.STREAM.CREATE.{}", self.stream())
}
/// What every hive needs to open the shared lifecycle-notices stream:
/// look it up, and create it if this hive is the first to arrive.
///
/// **Not per-hive templated, unlike `extra_hive_subjects`.** The KV
/// bucket case above namespaces a shared resource *within* itself
/// (`$KV.<bucket>.<hive>`, one key per hive); the notices stream has
/// no such per-hive split at the `STREAM.INFO`/`STREAM.CREATE` layer
/// — the stream itself, not a slice of it, is what every hive's
/// `open_or_create` needs to reach before it can publish to its own
/// `hive-notices.<hive>` subject, which [`Self::hive_subjects`] grants
/// beside these from the same crate constant. Granting these two subjects
/// to every hive is therefore correct, not a widening: it is
/// `CREATE`/`INFO` on one named stream, the same shape already
/// measured safe for the hive-status bucket in [`Self::create`] —
/// create-if-absent, never `STREAM.UPDATE`, so no hive can reshape a
/// stream another hive (or the swarm-controller, once it reads from
/// this stream) already created.
fn notices_subjects() -> [String; 2] {
// Unlike `Self::stream()` above, no `KV_` prefix: the notices
// stream is a plain `JetStream` stream, not a KV bucket, so its
// NATS stream name *is* `swarm_queue_client::notices::STREAM`
// verbatim — the `KV_` prefix is `create_key_value`'s own
// convention, not something every stream carries.
let stream = swarm_queue_client::notices::STREAM;
[
format!("$JS.API.STREAM.INFO.{stream}"),
format!("$JS.API.STREAM.CREATE.{stream}"),
]
}
/// What one hive may publish: the account minimum, the bucket lookup,
/// creation, and its **own** key.
///
/// Two things a reader would reasonably assume, both false and both
/// measured (`state/attack-3297-js-api-door.sh` in atlas's notes):
///
/// - `$KV.<bucket>.<key>` alone does **not** let a client write that key.
/// The client resolves the bucket first, so the `STREAM.INFO` subject is
/// part of the minimum for a plain write.
/// - `$JS.API.>` is not "the `JetStream` permission". It also covers
/// `$JS.API.STREAM.DELETE`, with which a hive correctly refused on a
/// neighbour's individual key can destroy the whole bucket — every
/// hive's data. Granting it would make per-key scoping decorative, which
/// is why these are named one at a time and a test asserts the wildcard
/// never returns as a convenience.
fn hive_subjects(&self, hive: &str) -> Vec<String> {
let mut subjects = Self::jetstream_minimum().to_vec();
subjects.extend([
format!("$JS.API.STREAM.INFO.{}", self.stream()),
self.create(),
format!("$KV.{}.{hive}", self.bucket),
]);
subjects.extend(Self::notices_subjects());
// The hive's own slice of the stream the subjects above let it open.
// Named from the defining crate so a rename cannot leave the grant
// pointing at a subject nobody publishes to. Not `extra_hive_subjects`:
// that is for streams this crate does not know about.
subjects.push(swarm_queue_client::notices::subject(hive));
// Reading the wanted-state bucket, which is **this hive's own**.
//
// One bucket per hive rather than one keyed by hive, so that a *watch*
// can be granted without widening the read: a consumer's filter travels
// in the request payload, so `CONSUMER.CREATE` grants a whole stream and
// cannot be scoped to a key the way `DIRECT.GET` can.
//
// `$KV.<bucket>.<hive>` stays deliberately absent — the controller
// declares this and a hive converges to it, so a hive that could write
// its own key could declare its own desired state.
let wanted = Self::wanted_stream(hive);
subjects.extend([
format!("$JS.API.STREAM.INFO.{wanted}"),
format!(
"$JS.API.DIRECT.GET.{wanted}.$KV.{}.{hive}",
swarm_queue_client::wanted::bucket(hive)
),
// The watch the paragraph above buys: a KV watch is a consumer, so
// `DIRECT.GET` covers the boot-time read and nothing after it.
// Both spellings for the same reason the status buckets grant both
// — an ephemeral consumer's subject carries no name, and `>` never
// matches zero tokens.
format!("$JS.API.CONSUMER.CREATE.{wanted}"),
format!("$JS.API.CONSUMER.CREATE.{wanted}.>"),
]);
// Publishing this hive's agents into the per-agent status bucket, and
// **only its own agents**.
//
// `.*` matches exactly one token, so this is every agent of one hive
// and nothing deeper — `.>` would also admit `<hive>.<agent>.<more>`,
// which `agent_status::split_key` rejects on read anyway; the grant has
// no reason to be wider than the format.
//
// The scoping is only expressible because the key is `.`-joined: a KV
// entry publishes to `$KV.<bucket>.<key>`, and a NATS wildcard matches
// whole tokens, so a key joined by anything else is one token and
// leaves only "one exact subject per agent" (needs a roster in here,
// which `hive_name`'s doc argues against) or a bucket-wide wildcard
// (any hive overwrites any other hive's agents).
//
// `STREAM.INFO` + `CREATE` come along for the same reason they do
// above: `open_or_create` resolves the bucket before it writes, and
// either end may be first on a fresh swarm. Without them the publish
// grant is unreachable — the client times out at bucket open.
let agent_status = Self::agent_status_stream();
subjects.extend([
format!("$JS.API.STREAM.INFO.{agent_status}"),
format!("$JS.API.STREAM.CREATE.{agent_status}"),
format!("$KV.{}.{hive}.*", swarm_queue_client::agent_status::BUCKET),
]);
// Reading the caps the swarm sets for the agents this hive runs
// (`swarm_queue_client::agent_limits`): a direct get, so read-only, and
// no `STREAM.INFO` because the reader skips the lookup.
//
// Every agent's key, not just this hive's: the bucket is keyed by agent
// alone, and naming one hive's agents here needs the roster
// `hive_name`'s doc argues against.
subjects.push(format!(
"$JS.API.DIRECT.GET.{}.>",
swarm_queue_client::agent_limits::STREAM
));
// The permissions the swarm grants those agents
// (`swarm_queue_client::agent_permissions`), read the same way and
// every key for the same reason.
subjects.push(format!(
"$JS.API.DIRECT.GET.{}.>",
swarm_queue_client::agent_permissions::STREAM
));
// The archetype an agent was created from
// (`swarm_queue_client::agent_archetype`), read the same way and every
// key for the same reason.
subjects.push(format!(
"$JS.API.DIRECT.GET.{}.>",
swarm_queue_client::agent_archetype::STREAM
));
// The one-shot import of the grants this hive's meta repo held, sent
// as a request on this hive's own subject: the controller takes the
// hive from the subject, so one hive cannot import for another.
subjects.push(swarm_queue_client::agent_permissions::import_subject(hive));
subjects.extend(
self.extra_hive_subjects
.iter()
.map(|s| s.replace(HIVE_PLACEHOLDER, hive)),
);
subjects
}
fn reader_subjects(&self) -> Vec<String> {
let stream = self.stream();
let mut subjects = Self::jetstream_minimum().to_vec();
subjects.extend([
format!("$JS.API.STREAM.INFO.{stream}"),
self.create(),
// The `.>` form specifically: the bare `$JS.API.DIRECT.GET.<stream>`
// is not the subject the client uses, and granting it was measured
// to make no difference.
format!("$JS.API.DIRECT.GET.{stream}.>"),
// `store.keys()` — the controller lists before it fetches, so a
// reader without this can get a key it already knows and discover
// nothing.
//
// BOTH forms, and the bare one is the one that matters. `keys()`
// creates an **ephemeral** ordered consumer, whose create subject
// carries no consumer name — and `>` matches one or more tokens,
// never zero, so the `.>` form alone does not cover it. Granting
// only that produced `Permissions Violation for Publish to
// "$JS.API.CONSUMER.CREATE.KV_hive-status"`, which reaches the
// client as a **timeout** and the operator as a 503. The `.>` form
// stays for a named/durable consumer.
format!("$JS.API.CONSUMER.CREATE.{stream}"),
format!("$JS.API.CONSUMER.CREATE.{stream}.>"),
// The knowledge event. One writer, many readers: the controller is
// the only publisher and every hive subscribes, so this is one
// literal subject rather than a per-hive family — named from the
// crate the publisher and the subscriber also name, so a rename
// cannot leave the grant pointing at a subject nobody uses.
//
// This is the reader's only non-JetStream subject, and without it
// the controller cannot emit the event at all. Worth stating because
// the symptom is unhelpful: a refused publish reaches the client as
// a **timeout**, so the visible failure is a hive that never hears
// about a change, with nothing in the controller's log to say a
// permission was the reason.
swarm_queue_client::KNOWLEDGE_SUBJECT.to_owned(),
// The deploy events: one subject per hive, so a hive is not woken
// by a deploy meant for another. Granted as a wildcard because
// this responder has no roster — it cannot enumerate hives, and a
// grant that had to track one would be a second place to get the
// list wrong (see `hive_name`'s doc for the same argument about
// admission). Same failure mode as the knowledge event above: a
// refused publish reaches the client as a timeout.
swarm_queue_client::DEPLOY_SUBJECT_WILDCARD.to_owned(),
// Operator input to an agent, one subject per agent, wildcard for
// the same no-roster reason. The harness takes the message's
// `from` as given, which holds only while this client is the
// family's sole publisher: no hive or agent grant may name it.
swarm_queue_client::AGENT_INPUT_SUBJECT_WILDCARD.to_owned(),
// Operator control commands to an agent (cancel its turn). A
// family of its own so the text-input grant never implies the
// power to stop a turn; same sole-publisher property, so a
// command needs no sender field to be trusted.
swarm_queue_client::AGENT_CONTROL_SUBJECT_WILDCARD.to_owned(),
// A review classifier try-out, sent as a request: the reply comes
// back on this client's inbox, which it already subscribes to.
swarm_queue_client::review_classifier::SUBJECT.to_owned(),
// A build of an agent config, sent as a request the same way.
swarm_wire::builder::SUBJECT.to_owned(),
// An archetype evaluation, sent as a request the same way.
swarm_wire::builder::ARCHETYPES_SUBJECT.to_owned(),
// An operator's claude login step, sent as a request the same way.
swarm_wire::claude_login::SUBJECT.to_owned(),
// The wanted-state buckets — one per hive, all created and written
// by this single client.
//
// Wildcards rather than a name per hive: a bucket name is one
// subject token and subjects have no prefix matching, so
// `KV_hive-wanted-*` is not expressible. The choice is an exact
// name per hive — which needs a hive roster in this responder,
// which `hive_name`'s doc argues against — or `*`.
//
// ⚠️ `*` therefore reaches every stream in the account, including
// the buckets hives publish themselves, so this client *can*
// overwrite a hive's self-reported status. That is an accepted
// operator decision, not an oversight: the controller is the
// swarm's writer of record, and a swarm that cannot trust it has a
// larger problem than this grant.
"$JS.API.STREAM.INFO.*".to_owned(),
"$JS.API.STREAM.CREATE.*".to_owned(),
"$JS.API.DIRECT.GET.*.>".to_owned(),
// The newest row of one subagent in `term-sub-<agent>`, which the
// subagent list reads by subject. Those streams do not allow
// direct get, so `DIRECT.GET` above does not reach them. `*` is a
// whole token: `term-sub-*` would name one stream literally, and
// the agent is not known here. Also reaches every other stream's
// `MSG.GET`, the same width as `STREAM.INFO.*` above. A refused
// publish reaches the client as a timeout.
"$JS.API.STREAM.MSG.GET.*".to_owned(),
// Replaying an agent's terminal from `term-main-<agent>` to
// swarm-ui. Consumer create on every stream, but only in the
// extended form whose last tokens are the consumer's filter,
// which the server checks against the payload. So a consumer
// delivers only rows below `$SWARM.term`, every agent's and every
// subagent's included (the `*` also matches a literal `*` or `>`),
// which this client already subscribes to and reads by
// `MSG.GET` above. No bare `CONSUMER.CREATE.<stream>`, whose
// filter is unchecked.
swarm_queue_client::agent_term::consumer_create_grant(),
// The same for one subagent's rows in `term-sub-<agent>`: the
// filter is `$SWARM.term.<agent>.sub.<subagent>`, two tokens
// deeper than the grant above reaches.
swarm_queue_client::subagent_term::consumer_create_grant(),
"$KV.*.>".to_owned(),
]);
// The per-agent status bucket, read-side only. Same five subjects as
// the hive-status block above and for the same measured reasons —
// including BOTH `CONSUMER.CREATE` forms, since `keys()` builds an
// ephemeral consumer whose subject carries no name.
//
// Deliberately **no `$KV.<bucket>.…` subject**: that is the write
// side, and the controller only reads this bucket. The hive gets a
// write grant scoped to its own agents (see `hive_subjects`); a
// reader holding one could forge any agent's status on any hive.
// Reading needs none of it — a KV read is a `DIRECT.GET`.
let agent_status = Self::agent_status_stream();
subjects.extend([
format!("$JS.API.STREAM.INFO.{agent_status}"),
format!("$JS.API.STREAM.CREATE.{agent_status}"),
format!("$JS.API.DIRECT.GET.{agent_status}.>"),
format!("$JS.API.CONSUMER.CREATE.{agent_status}"),
format!("$JS.API.CONSUMER.CREATE.{agent_status}.>"),
]);
subjects
}
}
#[cfg(test)]
mod tests {
use super::*;
fn policy() -> Policy {
Policy::new(
"hive-".to_owned(),
"-agent".to_owned(),
"hive-status".to_owned(),
vec!["swarm-controller".to_owned()],
Vec::new(),
)
.expect("the default policy is valid")
}
/// An agent grant's publish list without the operator-profile read every
/// agent holds, so a test can compare the templated part exactly.
fn templated(grant: &Permissions) -> Vec<String> {
let shared = swarm_queue_client::operator_profiles::direct_get_subject();
grant
.publish
.iter()
.filter(|s| **s != shared)
.cloned()
.collect()
}
#[test]
fn the_reader_can_open_and_list_the_agent_status_bucket() {
let subjects = policy().reader_subjects();
let s = Policy::agent_status_stream();
for want in [
format!("$JS.API.STREAM.INFO.{s}"),
format!("$JS.API.STREAM.CREATE.{s}"),
format!("$JS.API.DIRECT.GET.{s}.>"),
// The bare form is the one `keys()` needs: its ephemeral consumer
// has no name, and `>` never matches zero tokens.
format!("$JS.API.CONSUMER.CREATE.{s}"),
format!("$JS.API.CONSUMER.CREATE.{s}.>"),
] {
assert!(subjects.contains(&want), "reader is missing {want}");
}
// Control: the same reader really can be missing a subject, so the
// assertions above are not vacuously true of any string.
assert!(!subjects.contains(&format!("$JS.API.STREAM.DELETE.{s}")));
}
#[test]
fn no_hive_may_write_another_role_s_agent_status() {
// A hive publishes its *own* agents' status under
// `$KV.agent-status.<hive>.*` and must reach no further. This is the
// arm of the old reader-side guard that still holds.
let bucket = swarm_queue_client::agent_status::BUCKET;
let subjects = policy().hive_subjects("alpha");
for forbidden in [
format!("$KV.{bucket}.>"),
format!("$KV.{bucket}.*"),
format!("$KV.{bucket}.beta.*"),
] {
assert!(!subjects.contains(&forbidden), "hive alpha got {forbidden}");
}
// Control: the containment being asserted is not vacuous — the hive
// does hold its own slice.
assert!(subjects.contains(&format!("$KV.{bucket}.alpha.*")));
}
#[test]
fn the_readers_grant_is_deliberately_account_wide() {
// ⚠️ This pins a DECISION, not a safety property, and it replaced a
// guard that asserted the opposite — the operator's call was that the
// controller being able to override a hive is acceptable.
//
// A bucket name is one subject token and subjects have no prefix
// matching, so per-hive wanted-state buckets cannot be covered by any
// wildcard narrower than `*`. Scoping the controller would mean a hive
// roster inside this responder. If that trade is ever revisited, this
// test is the thing to change — it exists so the width reads as chosen.
let subjects = policy().reader_subjects();
assert!(subjects.contains(&"$KV.*.>".to_owned()));
assert!(subjects.contains(&"$JS.API.STREAM.INFO.*".to_owned()));
}
#[test]
fn a_hive_may_write_only_its_own_agents_status_keys() {
let bucket = swarm_queue_client::agent_status::BUCKET;
let subjects = policy().hive_subjects("alpha");
let s = Policy::agent_status_stream();
for want in [
// Without these the write subject is unreachable: `open_or_create`
// resolves the bucket first and times out before it publishes.
format!("$JS.API.STREAM.INFO.{s}"),
format!("$JS.API.STREAM.CREATE.{s}"),
format!("$KV.{bucket}.alpha.*"),
] {
assert!(subjects.contains(&want), "hive alpha is missing {want}");
}
// The scoping is the point, so pin what must NOT be there: a
// bucket-wide wildcard in any of its spellings, and another hive's
// slice. `.*` matches one token; `.>` would match deeper than the key
// format ever produces.
for forbidden in [
format!("$KV.{bucket}.>"),
format!("$KV.{bucket}.*"),
format!("$KV.{bucket}.alpha.>"),
format!("$KV.{bucket}.beta.*"),
] {
assert!(
!subjects.contains(&forbidden),
"hive alpha was granted {forbidden}, which reaches past its own agents"
);
}
}
/// A hive reads any agent's caps and can change none of them, and the
/// grant reaches no other bucket.
#[test]
fn a_hive_may_read_every_agents_caps_and_write_none() {
use swarm_queue_client::agent_limits::{STREAM, direct_get_subject, key_subject};
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
let may = |subject: &str| p.publish.iter().any(|g| covers(g, subject));
// Its own agents and agents running elsewhere alike.
for agent in ["atlas", "iris"] {
assert!(may(&direct_get_subject(agent)), "cannot read {agent}");
}
// A KV put or delete is a publish to the key's subject; the rest
// reshape or empty the stream.
for forbidden in [
key_subject("atlas"),
format!("$JS.API.STREAM.CREATE.{STREAM}"),
format!("$JS.API.STREAM.UPDATE.{STREAM}"),
format!("$JS.API.STREAM.DELETE.{STREAM}"),
format!("$JS.API.STREAM.PURGE.{STREAM}"),
format!("$JS.API.STREAM.MSG.DELETE.{STREAM}"),
format!("$JS.API.CONSUMER.CREATE.{STREAM}"),
// A named consumer, bare and with a key filter, which a grant of
// `CONSUMER.CREATE.<stream>.>` would cover.
format!("$JS.API.CONSUMER.CREATE.{STREAM}.c1"),
format!(
"$JS.API.CONSUMER.CREATE.{STREAM}.c1.{}",
key_subject("atlas")
),
] {
assert!(!may(&forbidden), "hive alpha may publish {forbidden}");
}
// The read reaches only this bucket.
for other in [
swarm_queue_client::agent_inference::direct_get_subject("atlas"),
swarm_queue_client::agent_schedules::direct_get_subject("atlas"),
"$JS.API.DIRECT.GET.KV_hive-wanted-beta.$KV.hive-wanted-beta.beta".to_owned(),
] {
assert!(!may(&other), "hive alpha may publish {other}");
}
}
/// A hive reads any agent's archetype and can change none of them, and the
/// grant reaches no other bucket.
#[test]
fn a_hive_may_read_every_agents_archetype_and_write_none() {
use swarm_queue_client::agent_archetype::{STREAM, direct_get_subject, key_subject};
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
let may = |subject: &str| p.publish.iter().any(|g| covers(g, subject));
for agent in ["atlas", "iris"] {
assert!(may(&direct_get_subject(agent)), "cannot read {agent}");
}
for forbidden in [
key_subject("atlas"),
format!("$JS.API.STREAM.CREATE.{STREAM}"),
format!("$JS.API.STREAM.UPDATE.{STREAM}"),
format!("$JS.API.STREAM.DELETE.{STREAM}"),
format!("$JS.API.STREAM.PURGE.{STREAM}"),
format!("$JS.API.STREAM.MSG.DELETE.{STREAM}"),
format!("$JS.API.CONSUMER.CREATE.{STREAM}"),
] {
assert!(!may(&forbidden), "hive alpha may publish {forbidden}");
}
// Not the per-source archetype list, which only the controller reads.
assert!(!may(&format!(
"$JS.API.DIRECT.GET.KV_{0}.$KV.{0}.hyperhive",
swarm_queue_client::archetypes::BUCKET
)));
}
/// A hive reads any agent's permissions and can change none of them; an
/// agent, with the template `swarm-nats.nix` passes, reads its own key and
/// no other, and writes none.
#[test]
fn a_hive_reads_every_agents_permissions_and_an_agent_only_its_own() {
use swarm_queue_client::agent_permissions::{STREAM, key_subject};
let direct_get_subject = |agent: &str| {
format!("$JS.API.DIRECT.GET.KV_agent-permissions.$KV.agent-permissions.{agent}")
};
let p = policy()
.with_agent_token_subjects(vec![
"$JS.API.DIRECT.GET.KV_agent-permissions.$KV.agent-permissions.{agent}".to_owned(),
])
.expect("a per-agent template is valid");
let hive = p.permissions("hive-alpha").expect("a hive is admitted");
let hive_may = |subject: &str| hive.publish.iter().any(|g| covers(g, subject));
for agent in ["atlas", "ruth"] {
assert!(hive_may(&direct_get_subject(agent)), "cannot read {agent}");
}
for forbidden in [
key_subject("atlas"),
format!("$JS.API.STREAM.CREATE.{STREAM}"),
format!("$JS.API.STREAM.DELETE.{STREAM}"),
format!("$JS.API.STREAM.PURGE.{STREAM}"),
format!("$JS.API.CONSUMER.CREATE.{STREAM}"),
] {
assert!(!hive_may(&forbidden), "hive alpha may publish {forbidden}");
}
let agent = p.agent_token_permissions("atlas").expect("configured");
let agent_may = |subject: &str| agent.publish.iter().any(|g| covers(g, subject));
assert!(agent_may(&direct_get_subject("atlas")));
for forbidden in [direct_get_subject("ruth"), key_subject("atlas")] {
assert!(!agent_may(&forbidden), "atlas may publish {forbidden}");
}
}
/// A hive sends its import on its own subject only; the reader hears every
/// hive's and may answer, and no other role may send one.
#[test]
fn a_hive_imports_only_under_its_own_name_and_the_reader_answers() {
use swarm_queue_client::agent_permissions::{
IMPORT_REPLY_DEADLINE, import_subject, import_subject_wildcard,
};
let p = policy();
let hive = p.permissions("hive-alpha").expect("a hive is admitted");
let hive_may = |subject: &str| hive.publish.iter().any(|g| covers(g, subject));
assert!(hive_may(&import_subject("alpha")));
assert!(!hive_may(&import_subject("beta")));
let reader = p.permissions("swarm-controller").expect("the reader");
assert!(
reader
.subscribe
.as_ref()
.expect("scoped")
.contains(&import_subject_wildcard())
);
assert_eq!(reader.responses, Some(IMPORT_REPLY_DEADLINE));
assert!(
!reader
.publish
.iter()
.any(|g| covers(g, &import_subject("alpha"))),
"the reader may send an import as a hive"
);
}
#[test]
fn an_extra_subject_without_the_placeholder_is_refused() {
// 🩸 The option exists to put a second stream inside ONE hive's
// namespace. A template with no `{hive}` expands to the same subject
// for all of them, so the flag whose purpose is scoping becomes the
// way to remove it - silently, and only in the deployment that set it.
let err = Policy::new(
"hive-".to_owned(),
"-agent".to_owned(),
"hive-status".to_owned(),
Vec::new(),
vec!["$SWARM.events.all".to_owned()],
)
.expect_err("a subject shared by every hive must not be accepted");
let msg = format!("{err}");
assert!(
msg.contains("$SWARM.events.all"),
"the error must name the offending template, got: {msg}"
);
}
#[test]
fn an_extra_subject_with_the_placeholder_is_accepted() {
// The other half: a check that only ever rejects would be indistinguishable
// from the option being broken.
Policy::new(
"hive-".to_owned(),
"-agent".to_owned(),
"hive-status".to_owned(),
Vec::new(),
vec!["$SWARM.events.{hive}.>".to_owned()],
)
.expect("a per-hive template is the shape this option is for");
}
#[test]
fn a_hive_may_publish_its_own_key_and_nothing_elses() {
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
assert!(p.publish.contains(&"$KV.hive-status.alpha".to_owned()));
assert!(!p.publish.iter().any(|s| s.contains("beta")));
}
#[test]
fn a_reader_may_publish_the_knowledge_event() {
let p = policy().permissions("swarm-controller").expect("a reader");
assert!(
p.publish
.contains(&swarm_queue_client::KNOWLEDGE_SUBJECT.to_owned()),
"the controller is the only publisher of this event; without the \
grant its publish is refused, and a refusal arrives as a timeout"
);
}
#[test]
fn a_hive_may_not_publish_the_knowledge_event_to_anyone_including_itself() {
// The controller *interprets* what a delivery means; a hive receives
// that verdict. A hive able to publish here could tell every other hive
// in the swarm — or itself — that the knowledge repo changed when it did
// not, which is an unauthenticated write into someone else's control
// path wearing an event's shape.
//
// One writer and many readers makes this arm matter MORE, not less: with
// a single shared subject a forged event reaches the whole swarm, where
// a per-hive subject would have reached one.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
assert!(
!p.publish
.iter()
.any(|s| s == swarm_queue_client::KNOWLEDGE_SUBJECT),
"a hive must not publish the knowledge event: {:?}",
p.publish
);
}
#[test]
fn a_reader_may_publish_a_deploy_event_to_any_hive() {
let p = policy().permissions("swarm-controller").expect("a reader");
assert!(
p.publish
.contains(&swarm_queue_client::DEPLOY_SUBJECT_WILDCARD.to_owned()),
"the controller is the only publisher of these events; without the \
grant its publish is refused, and a refusal arrives as a timeout"
);
}
#[test]
fn a_hive_may_not_publish_a_deploy_event_to_anyone_including_itself() {
// Same arm as the knowledge event's, and it matters more here: a forged
// knowledge event makes a hive re-read a repo, while a forged deploy
// event makes it rebuild and restart a named agent.
//
// Both directions asserted, because splitting the subject per hive
// makes them separate strings for the first time: a hive must reach
// neither another hive's deploy subject nor its own. Nothing in the
// grant should mention this family at all.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
for forbidden in [
swarm_queue_client::deploy_subject("beta"),
swarm_queue_client::deploy_subject("alpha"),
swarm_queue_client::DEPLOY_SUBJECT_WILDCARD.to_owned(),
] {
assert!(
!p.publish.contains(&forbidden),
"a hive must not publish {forbidden}: {:?}",
p.publish
);
}
}
#[test]
fn a_reader_may_publish_input_to_any_agent() {
let p = policy().permissions("swarm-controller").expect("a reader");
assert!(
p.publish
.contains(&swarm_queue_client::AGENT_INPUT_SUBJECT_WILDCARD.to_owned()),
"the controller is the only publisher of operator input; without \
the grant its request is refused, and a refusal arrives as a timeout"
);
}
#[test]
fn a_reader_may_publish_control_to_any_agent() {
let p = policy().permissions("swarm-controller").expect("a reader");
assert!(
p.publish
.contains(&swarm_queue_client::AGENT_CONTROL_SUBJECT_WILDCARD.to_owned()),
"the controller is the only publisher of control commands; without \
the grant its request is refused, and a refusal arrives as a timeout"
);
}
#[test]
fn nothing_but_the_controller_may_publish_control() {
// A command carries no sender: the harness acts on it because only
// the controller can publish it. A hive or an agent able to publish
// here could cancel any agent's turn.
let hive = policy().permissions("hive-alpha").expect("admitted");
let agent = policy()
.with_agent_token_subjects(vec!["$SWARM.term.{agent}".to_owned()])
.expect("a per-agent template is valid")
.agent_token_permissions("alpha")
.expect("configured");
for (who, p) in [("a hive", &hive), ("an agent", &agent)] {
assert!(
!p.publish.iter().any(|s| s.starts_with("$SWARM.control")),
"{who} must not publish control: {:?}",
p.publish
);
}
}
#[test]
fn an_agent_may_answer_the_command_it_was_sent() {
let p = policy()
.with_agent_token_subjects(vec!["$SWARM.term.{agent}".to_owned()])
.expect("a per-agent template is valid");
let atlas = p.agent_token_permissions("atlas").expect("configured");
assert_eq!(
atlas.responses,
Some(swarm_queue_client::AGENT_CONTROL_REPLY_DEADLINE)
);
}
#[test]
fn a_hive_may_not_publish_input_to_an_agent() {
// The harness turns this message into a turn from the operator named in
// it. A hive able to publish here could speak as the operator to any
// agent in the swarm.
let p = policy().permissions("hive-alpha").expect("admitted");
for forbidden in [
swarm_queue_client::agent_input_subject("alpha"),
swarm_queue_client::AGENT_INPUT_SUBJECT_WILDCARD.to_owned(),
] {
assert!(
!p.publish.contains(&forbidden),
"a hive must not publish {forbidden}: {:?}",
p.publish
);
}
assert!(
!p.publish.iter().any(|s| s.starts_with("$SWARM.input")),
"{:?}",
p.publish
);
}
#[test]
fn a_hive_grant_never_includes_the_jetstream_wildcard() {
// `$JS.API.>` also covers `$JS.API.STREAM.DELETE.KV_hive-status`, with
// which a hive refused on a neighbour's key can delete the entire
// bucket. Measured, not theorised - this test is the guard against it
// coming back as a convenience.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
assert!(!p.publish.iter().any(|s| s.contains("$JS.API.>")));
assert!(!p.publish.iter().any(|s| s.contains("STREAM.DELETE")));
assert!(!p.publish.iter().any(|s| s.contains("STREAM.PURGE")));
}
#[test]
fn the_bucket_lookup_is_part_of_a_publishers_minimum() {
// Without it the put is refused: the client resolves the bucket before
// it writes. Dropping this line looks like tightening and is breaking.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
assert!(
p.publish
.contains(&"$JS.API.STREAM.INFO.KV_hive-status".to_owned())
);
}
#[test]
fn every_grant_carries_the_jetstream_minimum() {
// 🩸 Found by the shipping gate, not by any unit test: a grant with
// every bucket-specific subject and neither of these cannot create the
// bucket at all. The client times out on `$JS.API.INFO` before it
// reaches anything that was granted, and a NATS denial looks like a
// hang from the client side — the server log is what named them.
for client in ["hive-alpha", "swarm-controller"] {
let p = policy().permissions(client).expect("admitted");
for required in ["$JS.API.INFO", "$JS.API.STREAM.NAMES"] {
assert!(
p.publish.iter().any(|s| s == required),
"{client} is missing {required}, so it cannot use JetStream at all"
);
}
}
}
#[test]
fn both_ends_may_create_the_bucket_but_not_reshape_it() {
// 🩸 The bug the subject measurements could not see: they ran against
// a bucket the *setup* had already created while unscoped, so
// "minimal" meant minimal-given-a-bucket-that-exists. `open_or_create`
// is called by both ends by design — whichever arrives first on a
// fresh swarm makes the bucket — so without CREATE a new swarm never
// gets one, and every other test still passes.
for client in ["hive-alpha", "swarm-controller"] {
let p = policy().permissions(client).expect("admitted");
assert!(
p.publish
.contains(&"$JS.API.STREAM.CREATE.KV_hive-status".to_owned()),
"{client} cannot create the bucket on a fresh swarm"
);
// CREATE is not UPDATE: a second arrival must not be able to
// reshape the bucket the first one made.
assert!(!p.publish.iter().any(|s| s.contains("STREAM.UPDATE")));
}
}
#[test]
fn a_reader_may_list_and_fetch_but_not_write() {
let p = policy()
.permissions("swarm-controller")
.expect("the reader is admitted");
// The BARE subject, asserted separately and first: `keys()` creates an
// ephemeral consumer, so its create subject ends at the stream name,
// and `>` matches one or more tokens rather than zero. This assertion
// used to name only the `.>` form below — which reads as covering the
// bare one and does not, so the suite was green while every list timed
// out in production.
assert!(
p.publish
.contains(&"$JS.API.CONSUMER.CREATE.KV_hive-status".to_owned()),
"an ephemeral consumer create carries no name token"
);
assert!(
p.publish
.contains(&"$JS.API.CONSUMER.CREATE.KV_hive-status.>".to_owned())
);
assert!(
p.publish
.contains(&"$JS.API.DIRECT.GET.KV_hive-status.>".to_owned())
);
// Scoped to the status bucket, not to `$KV.` as a whole: the hives
// write that one and a controller able to write it could forge a
// hive's own report. The wanted bucket runs the other way and the
// controller is its writer, so a blanket assertion here would forbid
// the grant that bucket exists for.
assert!(!p.publish.iter().any(|s| s.starts_with("$KV.hive-status")));
}
#[test]
fn an_unmatched_client_is_denied_not_granted_everything() {
// The whole policy is advisory if this returns a grant.
assert_eq!(policy().permissions("some-other-service"), None);
assert_eq!(policy().permissions(""), None);
}
/// Whether the grant `grant` covers the concrete subject `subject`, by
/// NATS' token rules: `*` is one token, `>` one or more.
fn covers(grant: &str, subject: &str) -> bool {
let g: Vec<&str> = grant.split('.').collect();
let s: Vec<&str> = subject.split('.').collect();
for (i, t) in g.iter().enumerate() {
match *t {
">" => return s.len() > i,
"*" if i < s.len() => {}
t if s.get(i) == Some(&t) => {}
_ => return false,
}
}
g.len() == s.len()
}
fn may_subscribe(p: &Permissions, subject: &str) -> bool {
let grants = p
.subscribe
.as_ref()
.expect("a grant's subscribe is an allow-list, never unrestricted");
assert!(!grants.is_empty(), "an empty allow-list is unrestricted");
grants.iter().any(|g| covers(g, subject))
}
/// The reply inbox each client connects with, as a subject a
/// request under it would receive on.
fn reply(prefix: &str) -> String {
format!("{prefix}.nuid123.token456")
}
#[test]
fn an_agent_token_may_subscribe_to_its_own_inbox_input_and_control_only() {
use swarm_queue_client::{agent_control_subject, agent_inbox_prefix, agent_input_subject};
let p = policy()
.with_agent_token_subjects(vec!["$SWARM.term.{agent}".to_owned()])
.expect("a per-agent template is valid");
let atlas = p.agent_token_permissions("atlas").expect("configured");
assert!(may_subscribe(&atlas, &reply(&agent_inbox_prefix("atlas"))));
assert!(may_subscribe(&atlas, &agent_input_subject("atlas")));
assert!(may_subscribe(&atlas, &agent_control_subject("atlas")));
for refused in [
">".to_owned(),
"$SWARM.term.>".to_owned(),
"$SWARM.term.argus".to_owned(),
"$SWARM.term.atlas".to_owned(),
"$SWARM.input.*".to_owned(),
"$SWARM.control.*".to_owned(),
agent_input_subject("argus"),
agent_control_subject("argus"),
reply(&agent_inbox_prefix("argus")),
"_INBOX.nuid123.token456".to_owned(),
] {
assert!(
!may_subscribe(&atlas, &refused),
"atlas may subscribe to {refused}"
);
}
}
/// The subscribe the reply multiplexer makes under `prefix`: a wildcard,
/// so the grant has to cover it as a subset, not just one reply.
fn multiplexer(prefix: &str) -> String {
format!("{prefix}.nuid123.*")
}
#[test]
fn a_hive_may_subscribe_to_its_own_events_and_inbox_only() {
use swarm_queue_client::{
KNOWLEDGE_SUBJECT, agent_inbox_prefix, agent_input_subject, client_inbox_prefix,
deploy_subject,
};
let alpha = policy().permissions("hive-alpha").expect("a hive");
let inbox = client_inbox_prefix("hive-alpha");
for allowed in [
KNOWLEDGE_SUBJECT.to_owned(),
deploy_subject("alpha"),
reply(&inbox),
multiplexer(&inbox),
] {
assert!(
may_subscribe(&alpha, &allowed),
"alpha may not subscribe to {allowed}"
);
}
for refused in [
">".to_owned(),
"$SWARM.>".to_owned(),
deploy_subject("beta"),
swarm_queue_client::DEPLOY_SUBJECT_WILDCARD.to_owned(),
"$SWARM.term.>".to_owned(),
"$SWARM.term.atlas".to_owned(),
"$SWARM.agent-state.atlas".to_owned(),
agent_input_subject("atlas"),
reply(&agent_inbox_prefix("atlas")),
reply(&client_inbox_prefix("hive-beta")),
reply(&client_inbox_prefix("swarm-controller")),
"_INBOX.nuid123.token456".to_owned(),
] {
assert!(
!may_subscribe(&alpha, &refused),
"alpha may subscribe to {refused}"
);
}
}
#[test]
fn the_reader_may_subscribe_to_agent_streams_and_its_inbox_only() {
use swarm_queue_client::{
KNOWLEDGE_SUBJECT, agent_inbox_prefix, agent_input_subject, client_inbox_prefix,
deploy_subject,
};
let reader = policy()
.permissions("swarm-controller")
.expect("the reader");
let inbox = client_inbox_prefix("swarm-controller");
for allowed in [
"$SWARM.term.atlas".to_owned(),
swarm_queue_client::subagent_term::subject("atlas", "scout"),
"$SWARM.agent-state.atlas".to_owned(),
reply(&inbox),
multiplexer(&inbox),
] {
assert!(
may_subscribe(&reader, &allowed),
"the reader may not subscribe to {allowed}"
);
}
for refused in [
">".to_owned(),
"$SWARM.>".to_owned(),
agent_input_subject("atlas"),
deploy_subject("alpha"),
KNOWLEDGE_SUBJECT.to_owned(),
reply(&agent_inbox_prefix("atlas")),
reply(&client_inbox_prefix("hive-alpha")),
"_INBOX.nuid123.token456".to_owned(),
] {
assert!(
!may_subscribe(&reader, &refused),
"the reader may subscribe to {refused}"
);
}
}
/// The subjects the publishers and relays build from the shared helpers
/// are the ones the reader's grant covers, whatever those helpers spell.
#[test]
fn the_reader_may_subscribe_to_every_subject_the_shared_helpers_build() {
let reader = policy()
.permissions("swarm-controller")
.expect("the reader");
for built in [
swarm_queue_client::term_subject("atlas"),
swarm_queue_client::subagent_term::subject("atlas", "scout"),
swarm_queue_client::agent_state_subject("atlas"),
] {
assert!(
may_subscribe(&reader, &built),
"the reader may not subscribe to {built}"
);
}
}
const CLASSIFIER: &str = "swarm-review-classifier";
fn with_classifier() -> Policy {
policy().with_review_classifiers(vec![CLASSIFIER.to_owned()])
}
#[test]
fn the_review_classifier_hears_its_subject_and_inbox_only_and_answers_by_reply() {
use swarm_queue_client::review_classifier::{RUN_DEADLINE, SUBJECT};
use swarm_queue_client::{agent_input_subject, client_inbox_prefix};
let p = with_classifier()
.permissions(CLASSIFIER)
.expect("a configured classifier is admitted");
let inbox = client_inbox_prefix(CLASSIFIER);
assert!(may_subscribe(&p, SUBJECT));
assert!(may_subscribe(&p, &reply(&inbox)));
for refused in [
">".to_owned(),
"$SWARM.>".to_owned(),
"$SWARM.review-classifier.other".to_owned(),
"$SWARM.term.atlas".to_owned(),
agent_input_subject("atlas"),
reply(&client_inbox_prefix("swarm-controller")),
"_INBOX.nuid123.token456".to_owned(),
] {
assert!(
!may_subscribe(&p, &refused),
"the classifier may subscribe to {refused}"
);
}
// It publishes nothing but replies: its own inbox keeps the list
// non-empty, and reaches no other client.
assert_eq!(p.publish, vec![format!("{inbox}.>")]);
assert_eq!(p.responses, Some(RUN_DEADLINE));
}
#[test]
fn an_unknown_client_is_denied_with_a_review_classifier_configured() {
let p = with_classifier();
assert_eq!(p.permissions("some-other-service"), None);
assert_eq!(p.permissions("swarm-review-classifier-2"), None);
// The classifier's id is nothing until it is configured.
assert_eq!(policy().permissions(CLASSIFIER), None);
}
#[test]
fn only_the_reader_may_send_a_try_out() {
use swarm_queue_client::review_classifier::SUBJECT;
let p = with_classifier()
.with_agent_token_subjects(vec!["$SWARM.term.{agent}".to_owned()])
.expect("a per-agent template is valid");
let reader = p.permissions("swarm-controller").expect("the reader");
assert!(reader.publish.iter().any(|g| covers(g, SUBJECT)));
for (who, grant) in [
("a hive", p.permissions("hive-alpha").expect("a hive")),
(
"the classifier",
p.permissions(CLASSIFIER).expect("admitted"),
),
(
"an agent",
p.agent_token_permissions("atlas").expect("configured"),
),
] {
assert!(
!grant.publish.iter().any(|g| covers(g, SUBJECT)),
"{who} may send a try-out: {:?}",
grant.publish
);
}
}
const BUILDER: &str = "swarm-builder";
#[test]
fn the_builder_hears_its_subject_and_inbox_only_and_answers_by_reply() {
use swarm_queue_client::client_inbox_prefix;
use swarm_wire::builder::{ARCHETYPES_SUBJECT, REPLY_DEADLINE, SUBJECT};
let p = policy()
.with_builders(vec![BUILDER.to_owned()])
.permissions(BUILDER)
.expect("a configured builder is admitted");
let inbox = client_inbox_prefix(BUILDER);
assert!(may_subscribe(&p, SUBJECT));
assert!(may_subscribe(&p, ARCHETYPES_SUBJECT));
assert!(may_subscribe(&p, &reply(&inbox)));
for refused in [
">".to_owned(),
"$SWARM.>".to_owned(),
swarm_queue_client::review_classifier::SUBJECT.to_owned(),
reply(&client_inbox_prefix("swarm-controller")),
] {
assert!(
!may_subscribe(&p, &refused),
"the builder may subscribe to {refused}"
);
}
assert_eq!(p.publish, vec![format!("{inbox}.>")]);
assert_eq!(p.responses, Some(REPLY_DEADLINE));
// The builder's id is nothing until it is configured.
assert_eq!(policy().permissions(BUILDER), None);
}
#[test]
fn only_the_reader_may_send_a_build() {
use swarm_wire::builder::{ARCHETYPES_SUBJECT, SUBJECT};
let p = with_classifier().with_builders(vec![BUILDER.to_owned()]);
let reader = p.permissions("swarm-controller").expect("the reader");
for subject in [SUBJECT, ARCHETYPES_SUBJECT] {
assert!(reader.publish.iter().any(|g| covers(g, subject)));
for (who, grant) in [
("a hive", p.permissions("hive-alpha").expect("a hive")),
("the builder", p.permissions(BUILDER).expect("admitted")),
(
"the classifier",
p.permissions(CLASSIFIER).expect("admitted"),
),
] {
assert!(
!grant.publish.iter().any(|g| covers(g, subject)),
"{who} may send to {subject}: {:?}",
grant.publish
);
}
}
}
const CLAUDE_LOGIN: &str = "swarm-claude-login";
#[test]
fn the_claude_login_minter_hears_its_subject_and_inbox_only_and_answers_by_reply() {
use swarm_queue_client::client_inbox_prefix;
use swarm_wire::claude_login::{REPLY_DEADLINE, SUBJECT};
let p = policy()
.with_claude_logins(vec![CLAUDE_LOGIN.to_owned()])
.permissions(CLAUDE_LOGIN)
.expect("a configured minter is admitted");
let inbox = client_inbox_prefix(CLAUDE_LOGIN);
assert!(may_subscribe(&p, SUBJECT));
assert!(may_subscribe(&p, &reply(&inbox)));
for refused in [
">".to_owned(),
"$SWARM.>".to_owned(),
swarm_wire::builder::SUBJECT.to_owned(),
reply(&client_inbox_prefix("swarm-controller")),
] {
assert!(
!may_subscribe(&p, &refused),
"the minter may subscribe to {refused}"
);
}
assert_eq!(p.publish, vec![format!("{inbox}.>")]);
assert_eq!(p.responses, Some(REPLY_DEADLINE));
// The minter's id is nothing until it is configured.
assert_eq!(policy().permissions(CLAUDE_LOGIN), None);
}
#[test]
fn only_the_reader_may_send_a_login_step() {
use swarm_wire::claude_login::SUBJECT;
let p = with_classifier()
.with_builders(vec![BUILDER.to_owned()])
.with_claude_logins(vec![CLAUDE_LOGIN.to_owned()]);
let reader = p.permissions("swarm-controller").expect("the reader");
assert!(reader.publish.iter().any(|g| covers(g, SUBJECT)));
for (who, grant) in [
("a hive", p.permissions("hive-alpha").expect("a hive")),
("the minter", p.permissions(CLAUDE_LOGIN).expect("admitted")),
("the builder", p.permissions(BUILDER).expect("admitted")),
(
"the classifier",
p.permissions(CLASSIFIER).expect("admitted"),
),
] {
assert!(
!grant.publish.iter().any(|g| covers(g, SUBJECT)),
"{who} may send a login step: {:?}",
grant.publish
);
}
}
#[test]
fn the_prefix_alone_names_no_hive() {
// `hive-` would otherwise produce `$KV.hive-status.`, a subject nobody
// reviewed and that no hive owns.
assert_eq!(policy().permissions("hive-"), None);
}
#[test]
fn a_hive_may_open_the_shared_notices_stream() {
// 🩸 The actual defect this closes: `open_or_create`'s `get_stream`
// call needs these two before a hive ever reaches its own
// `hive-notices.<hive>` publish subject, and neither has a
// `{hive}` to go through `extra_hive_subjects`.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
assert!(
p.publish
.contains(&"$JS.API.STREAM.INFO.hive-notices".to_owned())
);
assert!(
p.publish
.contains(&"$JS.API.STREAM.CREATE.hive-notices".to_owned())
);
}
#[test]
fn a_hive_may_publish_to_its_own_notices_subject() {
// Opening the stream and writing into it are separate grants.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
assert!(p.publish.contains(&"hive-notices.alpha".to_owned()));
}
#[test]
fn a_hive_may_not_publish_to_another_hives_notices_subject() {
// The stream-level subjects are identical for every hive; this one
// must not be, or reaching the stream would carry writing to every
// other hive's slice of it.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
assert!(!p.publish.contains(&"hive-notices.beta".to_owned()));
assert!(!p.publish.iter().any(|s| s == "hive-notices.>"));
}
#[test]
fn a_hive_may_read_its_own_wanted_key() {
// A KV read is a publish, and the direct-get subject carries the key.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
assert!(
p.publish.contains(
&"$JS.API.DIRECT.GET.KV_hive-wanted-alpha.$KV.hive-wanted-alpha.alpha".to_owned()
),
"got: {:?}",
p.publish
);
}
#[test]
fn a_hive_may_watch_its_own_wanted_bucket() {
// A watch is a consumer, so `DIRECT.GET` covers the boot-time read and
// nothing else. Both spellings, for the reason the status buckets grant
// both: an ephemeral consumer's subject carries no name, and `>` never
// matches zero tokens.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
for want in [
"$JS.API.CONSUMER.CREATE.KV_hive-wanted-alpha",
"$JS.API.CONSUMER.CREATE.KV_hive-wanted-alpha.>",
] {
assert!(p.publish.contains(&want.to_owned()), "got: {:?}", p.publish);
}
// Control: the grant's width is one stream, not the account — this is
// the property the per-hive bucket split bought.
assert!(
!p.publish
.iter()
.any(|s| s.starts_with("$JS.API.CONSUMER.CREATE.KV_hive-wanted-beta"))
);
}
#[test]
fn a_hive_may_not_read_another_hives_wanted_key() {
// The whole reason the read is scoped by key rather than by bucket.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
// ⚠️ Matched against the CURRENT bucket name. The per-hive split moved
// this from `hive-wanted.beta` to `hive-wanted-beta`, and the old
// spelling kept passing against a subject set that no longer contains
// it — a pass that had stopped meaning anything.
assert!(!p.publish.iter().any(|s| s.contains("hive-wanted-beta")));
assert!(!p.publish.iter().any(|s| s.contains("beta")));
assert!(
!p.publish
.iter()
.any(|s| s.starts_with("$JS.API.DIRECT.GET.KV_hive-wanted") && s.ends_with('>'))
);
}
#[test]
fn a_hive_may_not_write_its_own_wanted_key() {
// The controller declares wanted state; a hive that could write its own
// key could declare its own.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
// Current names, for the reason the sibling test above records: the
// pre-split strings `$KV.hive-wanted.{alpha,>}` still "passed" after
// the rename because nothing produces them any more.
assert!(!p.publish.iter().any(|s| s == "$KV.hive-wanted-alpha.alpha"));
assert!(!p.publish.iter().any(|s| s == "$KV.hive-wanted-alpha.>"));
assert!(!p.publish.iter().any(|s| s.starts_with("$KV.hive-wanted")));
}
#[test]
fn the_controller_may_create_and_write_the_wanted_bucket() {
// Presence control for the three above: the subjects exist, on the one
// identity that is meant to hold them.
let p = policy()
.permissions("swarm-controller")
.expect("a reader is admitted");
// Account-wide since the per-hive split: a bucket name is one subject
// token, so no wildcard narrower than `*` covers N per-hive buckets.
// See `the_readers_grant_is_deliberately_account_wide`.
assert!(p.publish.contains(&"$KV.*.>".to_owned()));
assert!(p.publish.contains(&"$JS.API.STREAM.CREATE.*".to_owned()));
}
#[test]
fn the_controller_may_replay_terminal_rows_and_no_other_subject() {
use swarm_queue_client::agent_term::stream_name;
use swarm_queue_client::{subagent_term, term_subject};
let p = policy()
.permissions("swarm-controller")
.expect("a reader is admitted");
let may_publish = |s: &str| p.publish.iter().any(|g| covers(g, s));
let create = |stream: &str, filter: &str| {
format!("$JS.API.CONSUMER.CREATE.{stream}.term-replay-n1.{filter}")
};
assert!(may_publish(&create(
&stream_name("atlas"),
&term_subject("atlas")
)));
assert!(may_publish(&create(
&subagent_term::stream_name("atlas"),
&subagent_term::subject("atlas", "scout"),
)));
for refused in [
// The bare form, whose filter rides in the payload alone.
format!("$JS.API.CONSUMER.CREATE.{}", stream_name("atlas")),
format!(
"$JS.API.CONSUMER.CREATE.{}",
subagent_term::stream_name("atlas")
),
create(
&subagent_term::stream_name("atlas"),
&format!("{}.x", subagent_term::subject("atlas", "scout")),
),
create(
&subagent_term::stream_name("atlas"),
"$SWARM.agent-state.atlas.sub.scout",
),
create("hive-notices", "hive-notices.alpha"),
create(&stream_name("atlas"), "$SWARM.agent-state.atlas"),
create(
&stream_name("atlas"),
&format!("{}.x", term_subject("atlas")),
),
] {
assert!(!may_publish(&refused), "the reader may publish {refused}");
}
// Control: no hive holds the grant.
assert!(
!policy()
.hive_subjects("alpha")
.iter()
.any(|s| covers(s, &create(&stream_name("atlas"), &term_subject("atlas"))))
);
}
#[test]
fn the_controller_may_read_a_subagents_newest_row() {
let p = policy()
.permissions("swarm-controller")
.expect("a reader is admitted");
assert!(p.publish.contains(&"$JS.API.STREAM.MSG.GET.*".to_owned()));
// `*` only matches a whole token, so a prefix spelling grants one
// stream literally named that and reads nothing.
assert!(!p.publish.iter().any(|s| s.contains("term-sub-*")));
// Control: a hive's grant holds no `MSG.GET`, so the subject above is
// the controller's alone.
assert!(
!policy()
.hive_subjects("alpha")
.iter()
.any(|s| s.starts_with("$JS.API.STREAM.MSG.GET"))
);
}
#[test]
fn the_notices_stream_grant_is_identical_across_hives() {
// Unlike `$KV.<bucket>.<hive>` or an `extra_hive_subjects`
// template, these two subjects name the stream itself, not a
// per-hive slice of it — every hive gets the exact same two
// strings, and that is the correct shape, not an oversight.
let alpha = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
let beta = policy()
.permissions("hive-beta")
.expect("a hive is admitted");
for subject in [
"$JS.API.STREAM.INFO.hive-notices",
"$JS.API.STREAM.CREATE.hive-notices",
] {
assert!(alpha.publish.contains(&subject.to_owned()));
assert!(beta.publish.contains(&subject.to_owned()));
}
}
#[test]
fn the_notices_grant_never_includes_stream_update_or_delete() {
// Same invariant `a_hive_grant_never_includes_the_jetstream_wildcard`
// holds for the status bucket, restated for the stream this fold
// grants CREATE/INFO on: create-if-absent must not become
// reshape-or-destroy.
let p = policy()
.permissions("hive-alpha")
.expect("a hive is admitted");
assert!(
!p.publish
.iter()
.any(|s| s.contains("hive-notices") && s.contains("STREAM.UPDATE"))
);
assert!(
!p.publish
.iter()
.any(|s| s.contains("hive-notices") && s.contains("STREAM.DELETE"))
);
}
#[test]
fn extra_subjects_are_scoped_to_the_hive_that_publishes_them() {
// The extension point: a second stream (lifecycle notices, say) is
// published by the same `hive-<name>` identity on a different subject.
// It has to land inside that hive's namespace, or one hive can write
// another's events even though its status key is scoped.
let p = Policy::new(
"hive-".to_owned(),
"-agent".to_owned(),
"hive-status".to_owned(),
Vec::new(),
vec!["$SWARM.events.{hive}.>".to_owned()],
)
.expect("a per-hive template is valid");
let g = p.permissions("hive-alpha").expect("a hive is admitted");
assert!(g.publish.contains(&"$SWARM.events.alpha.>".to_owned()));
assert!(!g.publish.iter().any(|s| s.contains("{hive}")));
}
#[test]
fn the_hives_shared_agent_client_is_refused() {
// Agents connect with their own credential. The shared client names
// the hive and never the agent, so any grant to it would let one agent
// publish as its siblings.
//
// 🩸 The agent id satisfies the HIVE parse too (`hive-alpha-agent`
// strips to a hive named `alpha-agent`), so a hive-first arm order
// would hand this client its hive's grant, status key included, and
// nothing would report it. `is_none` here is what holds the order.
assert!(policy().permissions("hive-alpha-agent").is_none());
// Control: the hive itself is admitted, so the refusal above is the
// agent arm answering rather than the prefix failing to match.
assert!(policy().permissions("hive-alpha").is_some());
}
#[test]
fn an_empty_agent_suffix_is_refused() {
// 🩸 An agent id is a hive id plus the suffix, so an empty suffix makes
// `strip_suffix` succeed on every hive id: the two principals become
// one string, and the agent arm, which runs first and refuses, would
// refuse every hive. That fails at construction rather than at connect.
Policy::new(
"hive-".to_owned(),
String::new(),
"hive-status".to_owned(),
Vec::new(),
Vec::new(),
)
.expect_err("an empty agent suffix must not construct");
}
#[test]
fn an_agent_token_grant_is_the_agents_own_subjects_and_nothing_else() {
let p = policy()
.with_agent_token_subjects(vec![
"$SWARM.term.{agent}".to_owned(),
"$SWARM.agent-state.{agent}".to_owned(),
])
.expect("per-agent templates are valid");
let g = p.agent_token_permissions("atlas").expect("configured");
assert_eq!(
g.publish,
vec![
"$SWARM.term.atlas".to_owned(),
"$SWARM.agent-state.atlas".to_owned(),
"$JS.API.DIRECT.GET.KV_operator-profiles.$KV.operator-profiles.operators"
.to_owned(),
]
);
}
/// A verified agent may write its own icon key and no other agent's.
#[test]
fn an_agent_may_write_only_its_own_icon_key() {
use swarm_queue_client::agent_icon::subject;
let p = policy()
.with_agent_token_subjects(vec!["$KV.agent-icons.{agent}".to_owned()])
.expect("a per-agent template is valid");
let atlas = p.agent_token_permissions("atlas").expect("configured");
assert_eq!(templated(&atlas), vec![subject("atlas")]);
assert!(!atlas.publish.contains(&subject("argus")));
// Control: the same template does grant argus its own key, so atlas
// lacking it is atlas's grant being scoped.
let argus = p.agent_token_permissions("argus").expect("configured");
assert_eq!(templated(&argus), vec![subject("argus")]);
}
/// The subagent template as `swarm-nats.nix` spells it expands to the
/// subjects the subagent daemon publishes on, publish only. The stream is
/// the controller's to create, which its own grant covers.
#[test]
fn an_agents_subagent_grant_is_publish_on_its_own_family_only() {
use swarm_queue_client::subagent_term::{stream_name, stream_subjects, subject};
let p = policy()
.with_agent_token_subjects(vec!["$SWARM.term.{agent}.sub.>".to_owned()])
.expect("a per-agent template is valid");
let g = p.agent_token_permissions("atlas").expect("configured");
assert_eq!(templated(&g), vec![stream_subjects("atlas")]);
assert!(subject("atlas", "scout").starts_with(g.publish[0].trim_end_matches('>')));
let argus = p.agent_token_permissions("argus").expect("configured");
assert_eq!(templated(&argus), vec![stream_subjects("argus")]);
assert_ne!(g.publish, argus.publish);
let stream = stream_name("atlas");
assert!(
!stream.contains('.'),
"{stream} is one token, so `*` covers it"
);
assert!(
policy()
.reader_subjects()
.contains(&"$JS.API.STREAM.CREATE.*".to_owned())
);
}
/// The schedule template as `swarm-nats.nix` spells it reads one key: the
/// agent's own. It covers no other agent's key, no other stream or bucket,
/// and no way to open, watch or write the bucket.
#[test]
fn an_agent_may_read_only_its_own_schedule_key() {
use swarm_queue_client::agent_schedules::{STREAM, direct_get_subject, key_subject};
let p = policy()
.with_agent_token_subjects(vec![
"$JS.API.DIRECT.GET.KV_agent-schedules.$KV.agent-schedules.{agent}".to_owned(),
])
.expect("a per-agent template is valid");
let atlas = p.agent_token_permissions("atlas").expect("configured");
assert_eq!(templated(&atlas), vec![direct_get_subject("atlas")]);
// Control: argus's own expansion is a different subject, so atlas
// lacking it is the grant being scoped, not the template being empty.
let argus = p.agent_token_permissions("argus").expect("configured");
assert_eq!(templated(&argus), vec![direct_get_subject("argus")]);
assert!(!atlas.publish.contains(&direct_get_subject("argus")));
for refused in [
direct_get_subject("argus"),
format!("$JS.API.DIRECT.GET.{STREAM}"),
format!("$JS.API.STREAM.INFO.{STREAM}"),
format!("$JS.API.STREAM.CREATE.{STREAM}"),
format!("$JS.API.STREAM.DELETE.{STREAM}"),
format!("$JS.API.STREAM.MSG.GET.{STREAM}"),
format!("$JS.API.CONSUMER.CREATE.{STREAM}"),
format!(
"$JS.API.CONSUMER.CREATE.{STREAM}.w.{}",
key_subject("atlas")
),
key_subject("atlas"),
key_subject("argus"),
"$JS.API.DIRECT.GET.KV_agent-icons.$KV.agent-icons.atlas".to_owned(),
"$JS.API.DIRECT.GET.KV_hive-wanted-alpha.$KV.hive-wanted-alpha.alpha".to_owned(),
"$JS.API.INFO".to_owned(),
] {
assert!(
!atlas.publish.iter().any(|g| covers(g, &refused)),
"atlas's grant covers {refused}"
);
}
// Control: the matcher does match, so the refusals above are not
// vacuous.
assert!(covers(&atlas.publish[0], &direct_get_subject("atlas")));
assert!(covers("$KV.*.>", &key_subject("argus")));
}
/// The inference template as `swarm-nats.nix` spells it reads one key, the
/// agent's own, and nothing that writes, watches or opens the bucket.
#[test]
fn an_agent_may_read_only_its_own_inference_key() {
use swarm_queue_client::agent_inference::{STREAM, direct_get_subject, key_subject};
let p = policy()
.with_agent_token_subjects(vec![
"$JS.API.DIRECT.GET.KV_agent-inference.$KV.agent-inference.{agent}".to_owned(),
])
.expect("a per-agent template is valid");
let atlas = p.agent_token_permissions("atlas").expect("configured");
assert_eq!(templated(&atlas), vec![direct_get_subject("atlas")]);
let argus = p.agent_token_permissions("argus").expect("configured");
assert_eq!(templated(&argus), vec![direct_get_subject("argus")]);
for refused in [
direct_get_subject("argus"),
format!("$JS.API.DIRECT.GET.{STREAM}"),
format!("$JS.API.STREAM.INFO.{STREAM}"),
format!("$JS.API.CONSUMER.CREATE.{STREAM}"),
key_subject("atlas"),
swarm_queue_client::agent_schedules::direct_get_subject("atlas"),
] {
assert!(
!atlas.publish.iter().any(|g| covers(g, &refused)),
"atlas's grant covers {refused}"
);
}
// Control: the matcher matches the one subject granted.
assert!(covers(&atlas.publish[0], &direct_get_subject("atlas")));
}
#[test]
fn an_agent_token_subject_without_the_placeholder_is_refused() {
let err = policy()
.with_agent_token_subjects(vec!["$SWARM.term.all".to_owned()])
.expect_err("a subject shared by every agent is not the agent's own");
assert!(format!("{err}").contains("$SWARM.term.all"), "{err}");
}
#[test]
fn with_no_agent_token_subject_configured_an_agent_token_is_refused() {
assert!(policy().agent_token_permissions("atlas").is_none());
}
/// Every agent reads the operator list with one direct get on its one key,
/// and nothing else of the bucket: no lookup, no listing, no other key and
/// no write.
#[test]
fn an_agent_may_read_only_the_operator_list_key() {
use swarm_queue_client::operator_profiles::{
BUCKET, STREAM, direct_get_subject, key_subject,
};
let p = policy()
.with_agent_token_subjects(vec!["$SWARM.term.{agent}".to_owned()])
.expect("a per-agent template is valid");
let atlas = p.agent_token_permissions("atlas").expect("configured");
assert!(atlas.publish.contains(&direct_get_subject()));
let may = |subject: &str| atlas.publish.iter().any(|g| covers(g, subject));
for refused in [
key_subject(),
format!("$JS.API.DIRECT.GET.{STREAM}"),
format!("$JS.API.DIRECT.GET.{STREAM}.$KV.{BUCKET}.mara"),
format!("$JS.API.STREAM.INFO.{STREAM}"),
format!("$JS.API.STREAM.CREATE.{STREAM}"),
format!("$JS.API.STREAM.UPDATE.{STREAM}"),
format!("$JS.API.STREAM.DELETE.{STREAM}"),
format!("$JS.API.STREAM.PURGE.{STREAM}"),
format!("$JS.API.STREAM.MSG.GET.{STREAM}"),
format!("$JS.API.CONSUMER.CREATE.{STREAM}"),
format!("$JS.API.CONSUMER.CREATE.{STREAM}.c1.$KV.{BUCKET}.>"),
] {
assert!(!may(&refused), "atlas may publish {refused}");
}
// Control: the matcher does match, so the refusals above are not
// vacuous.
assert!(may(&direct_get_subject()));
// The hive's own client is not the reader and gets none of it.
let hive = p.permissions("hive-alpha").expect("admitted");
assert!(
!hive
.publish
.iter()
.any(|g| covers(g, &direct_get_subject()))
);
}
}