systemprompt-security 0.12.0

Security infrastructure for systemprompt.io AI governance: JWT, OAuth2 token extraction, scope enforcement, ChaCha20-Poly1305 secret encryption, the four-layer tool-call governance pipeline, and the unified authz decision plane (deny-overrides resolver + AuthzDecisionHook) shared by gateway and MCP enforcement.
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//! Unified authorization decision plane.
//!
//! Houses the deny-overrides resolver, `access_control_rules` repository,
//! and [`AuthzDecisionHook`] extension surface shared by the gateway
//! `/v1/messages` proxy and the MCP RBAC middleware. Both call
//! [`resolve`] with different `entity_type` / `entity_id` pairs against
//! the same table and audit shape.
//!
//! # Three-layer model
//!
//! Authorization runs in three layers, in order. Each can only tighten an
//! earlier `Allow`; none can loosen a `Deny`.
//!
//! 1. **PBAC** — `Permission` enum on the JWT `scope` claim, enforced at the
//!    route boundary by `with_auth(scope)`. Lives in core. Always on.
//! 2. **RBAC** — `access_control_rules` table evaluated by [`resolve`] (and the
//!    [`RuleBasedHook`] that wraps it) against `AuthzRequest.{user_id, roles}`.
//!    Lives in core. Always on after PBAC; empty table = allow-all at this
//!    layer.
//! 3. **ABAC hook** — [`AuthzDecisionHook::evaluate`] called after RBAC. Lives
//!    in extensions; core ships [`RuleBasedHook`], [`DenyAllHook`],
//!    [`AllowAllHook`], [`WebhookHook`], and the [`CompositeAuthzHook`]
//!    composer for the multi-extension case. Extensions read
//!    `AuthzRequest.attributes` (the opaque tenant-defined bag) and pattern on
//!    `AuthzContext.kind` for enforcement-site dispatch.

pub mod audit;
pub mod composite;
pub mod config;
pub mod error;
pub mod extension;
pub mod hook;
pub mod ingestion;
pub mod registry;
pub mod repository;
pub mod resolver;
pub mod rule_based;
pub mod runtime;
pub mod types;

pub use audit::{
    AUDIT_WRITE_FAILED_TOTAL, AuthzAuditSink, AuthzSource, DbAuditSink, GovernanceDecisionRecord,
    GovernanceDecisionRepository, NullAuditSink, insert_governance_decision,
};
pub use composite::CompositeAuthzHook;
pub use config::{AccessControlConfig, RuleEntry};
pub use error::{AuthzBootstrapError, AuthzError, AuthzResult};
pub use extension::AuthzExtension;
pub use hook::{AllowAllHook, AuthzDecisionHook, DenyAllHook, SharedAuthzHook, WebhookHook};
pub use ingestion::{AccessControlIngestionService, IngestOptions, IngestReport};
pub use registry::{AuthzHookContext, AuthzHookRegistration, discover_authz_hook};
pub use repository::{AccessControlRepository, UpsertRuleParams};
pub use resolver::{ResolveInput, resolve};
pub use rule_based::RuleBasedHook;
pub use runtime::build_authz_hook;
pub use types::{
    Access, AccessRule, AuthzContext, AuthzDecision, AuthzRequest, Decision, DecisionTag,
    DenyReason, EntityKind, EntityRef, EntityRow, MatchedBy, RuleType,
};