Networking
Scoped operations with durable SQLite jobs, worker deadlines and inspectable audit evidence.
ORIGINAL CONTRIBUTIONS
NetSecOps / SYSTEM MAP
SYSTEMS DESIGN & OWNERSHIP
The Rust application separates durable SQLite job/checkpoint state from terminal attachments and external worker execution. Reopening the model can recover persisted context even when the original console is gone.
The tested repair keeps a worker deadline active when the cancellation channel closes or publishes a false value. It also checks cancellation before executable resolution, so a cancelled task does not start side effects merely because the controller disappeared.
Unix peer credentials, normalized scope, bounded work units and process-group lifecycle controls define the local operating boundary. The safe replay demonstrates SQLite recovery and checkpoint deduplication without scanning any real network. Initial-import provenance remains under review.
EXPLORE THE ARCHITECTURE
Local Unix peer identity → daemon scope/confirmation gates → bounded diagnostic worker → evidence checkpoint. Portfolio uses synthetic replay and starts no network scans.
Represent daemon operations and response errors.
ImplementationVersioned serialized commands cover job creation, start, status, pause/resume and cancellation.
Security & failure behaviorThe daemon authenticates the Unix peer before dispatch; this manifest does not imply a public control API. Invalid commands, protocol versions or identifiers produce structured failures.
TradeoffA local Unix protocol fits Linux operations; cross-platform service parity remains limited.
Own job lifecycle, recovery and scope admission.
ImplementationUnix listener validates peer credentials, normalized bounded scopes and explicit start authorization; tasks persist transitions.
Security & failure behaviorRoot, socket owner and permitted group membership are checked; remote scope needs explicit allow_remote. Unauthorized peers, unconfirmed starts or invalid scopes are refused. Incomplete tasks enter recovery logic.
TradeoffOS local identity is the trust anchor; deployment group membership grants meaningful authority.
Execute bounded subprocess work and collect output.
ImplementationWorker constructs argument arrays, records process identity, validates Nmap XML and publishes terminal output.
Security & failure behaviorCancellation targets process groups; recovery checks recorded process identity before terminating a process. Cancellation, process failure or invalid output prevent successful completion.
TradeoffExternal tools and OS facilities remain runtime dependencies; synthetic replay does not validate live scanning.
Keep jobs, attempts, audit transitions and completed checkpoints.
ImplementationSQLite transactions store state changes and stage results; completion requires checkpoint invariants.
Security & failure behaviorPersisted process identity supports recovery decisions; schema versions are checked. Unsupported schema, missing jobs/tasks or incomplete checkpoints return typed storage errors.
TradeoffTransactional single-host durability; distributed workers are outside this architecture.
TECHNICAL CASE STUDY
Run authorized diagnostics with recoverable job state, bounded worker lifetimes, and evidence that survives interruption.
Scope normalization, bounded work units, durable checkpoints, cancellation, local authorization and a safe demonstration with no real scans.
Rust daemon and Unix peer credentials, SQLite WAL/FULL transactions, terminal attachment hub, structured external-worker profiles and systemd packaging.
Daemon socket checks UID/GID. Scope normalization and bounded_work_units constrain targets. Process identity and process-group cancellation constrain worker lifecycle. No public administrative endpoint is connected.
Local history attributes four commits to CharlesDerek/charlesderek, but the large initial implementation import has unresolved upstream provenance. The directory labels the project review-pending. The tested worker repair is independently attributable.
StateStore persistence, checkpoint deduplication, model recovery transitions and worker lifecycle checks are present. Source includes PTY attachment and daemon routing; those are separate from the safe replay.
Full scheduler recovery under real worker execution, packaging deployment and actual diagnostic tools were not exercised by this model replay. No production scalability claim.
A closed cancellation channel or a false update previously escaped the deadline select. The fix waits for a true cancellation while retaining the timeout branch; pre-cancelled workers return before side effects.
64 application tests and 9 example tests passed, along with strict Clippy and formatting. Two new worker regressions failed against baseline; an additional regression checks false updates followed by cancellation.
Before: controller loss could leave an unbounded worker wait; pre-cancelled tasks reached executable resolution. After: timeout survives controller loss and cancellation is checked before launch. Local commit e36846d.
Independent local daemon, SQLite state and terminal UI. Public portfolio displays a captured SQLite model replay without scanner or daemon execution.
Controller disconnection is treated as absence of cancellation while the deadline remains active. Explicit model recovery demonstrates persistence without claiming full scheduler recovery.
The Operations persistence replay reopens SQLite, marks model interruption/recovery, suppresses duplicate checkpoints and completes a synthetic job. No network scan, wireless operation or privileged host action.
ENGINEERING SCOPE
Worker improvements verified; initial implementation import provenance remains under review.