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- Implemented the PhpAnalyzerPlugin to analyze PHP projects. - Created ComposerLockData class to represent data from composer.lock files. - Developed ComposerLockReader to load and parse composer.lock files asynchronously. - Introduced ComposerPackage class to encapsulate package details. - Added PhpPackage class to represent PHP packages with metadata and evidence. - Implemented PhpPackageCollector to gather packages from ComposerLockData. - Created PhpLanguageAnalyzer to perform analysis and emit results. - Added capability signals for known PHP frameworks and CMS. - Developed unit tests for the PHP language analyzer and its components. - Included sample composer.lock and expected output for testing. - Updated project files for the new PHP analyzer library and tests.
63 lines
4.6 KiB
Markdown
63 lines
4.6 KiB
Markdown
# Findings Ledger — Air-Gap Provenance Extensions (LEDGER-AIRGAP-56/57/58)
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> **Scope:** How ledger events capture mirror bundle provenance, staleness metrics, evidence snapshots, and sealed-mode timeline events for air-gapped deployments.
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## 1. Requirements recap
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- **LEDGER-AIRGAP-56-001:** Record mirror bundle metadata (`bundle_id`, `merkle_root`, `time_anchor`, `source_region`) whenever advisories/VEX/policies are imported offline. Tie import provenance to each affected ledger event.
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- **LEDGER-AIRGAP-56-002:** Surface staleness metrics and enforce risk-critical export blocks when imported data exceeds freshness SLAs; emit remediation guidance.
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- **LEDGER-AIRGAP-57-001:** Link findings evidence snapshots (portable bundles) so cross-enclave verification can attest to the same ledger hash.
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- **LEDGER-AIRGAP-58-001:** Emit sealed-mode timeline events describing bundle impacts (new findings, remediation deltas) for Console and Notify.
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## 2. Schema additions
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| Entity | Field | Type | Notes |
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| --- | --- | --- | --- |
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| `ledger_events.event_body` | `airgap.bundle` | object | `{ "bundleId", "merkleRoot", "timeAnchor", "sourceRegion", "importedAt", "importOperator" }` recorded on import events. |
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| `ledger_events.event_body` | `airgap.evidenceSnapshot` | object | `{ "bundleUri", "dsseDigest", "expiresAt" }` for findings evidence bundles. |
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| `ledger_projection` | `airgap.stalenessSeconds` | integer | Age of newest data feeding the finding projection. |
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| `ledger_projection` | `airgap.bundleId` | string | Last bundle influencing the projection row. |
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| `timeline_events` (new view) | `airgapImpact` | object | Materials needed for LEDGER-AIRGAP-58-001 timeline feed (finding counts, severity deltas). |
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Canonical JSON must sort object keys (`bundleId`, `importOperator`, …) to keep hashes deterministic.
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## 3. Import workflow
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1. **Mirror bundle validation:** AirGap controller verifies bundle signature/manifest before ingest; saves metadata for ledger enrichment.
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2. **Event enrichment:** The importer populates `airgap.bundle` fields on each event produced from the bundle. `bundleId` equals manifest digest (SHA-256). `merkleRoot` is the bundle’s manifest Merkle root; `timeAnchor` is the authoritative timestamp from the bundle.
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3. **Anchoring:** Merkle batching includes bundle metadata; anchor references in `ledger_merkle_roots.anchor_reference` use format `airgap::<bundleId>` when not externally anchored.
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4. **Projection staleness:** Projector updates `airgap.stalenessSeconds` comparing current time with `bundle.timeAnchor` per artifact scope; CLI + Console read the value to display freshness indicators.
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5. **API surface:** `POST /internal/ledger/airgap-import` records bundle provenance (returns `ledgerEventId`, `chainId`, `sequence`) and persists the same metadata into `airgap_imports` for audit.
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## 4. Staleness enforcement
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- Config option `AirGapPolicies:FreshnessThresholdSeconds` (default 604800 = 7 days) sets allowable age.
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- Export workflows check `airgap.stalenessSeconds`; when over threshold the service raises `ERR_AIRGAP_STALE` and supplies remediation message referencing the last bundle (`bundleId`, `timeAnchor`, `importOperator`).
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- Metrics (`ledger_airgap_staleness_seconds`) track distribution per tenant for dashboards.
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## 5. Evidence snapshots
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- Evidence bundles (`airgap.evidenceSnapshot`) reference portable DSSE packages stored in Evidence Locker (`bundleUri` like `file://offline/evidence/<bundleId>.tar`).
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- CLI command `stella ledger evidence link` attaches evidence snapshots to findings after bundle generation; ledger event records both DSSE digest and expiration.
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- Timeline entries and Console detail views display “Evidence snapshot available” with download instructions suited for sealed environments.
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## 6. Timeline events (LEDGER-AIRGAP-58-001)
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- New derived view `timeline_airgap_impacts` emits JSON objects such as:
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```json
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{
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"tenant": "tenant-a",
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"bundleId": "bundle-sha256:…",
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"newFindings": 42,
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"resolvedFindings": 18,
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"criticalDelta": +5,
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"timeAnchor": "2025-10-30T11:00:00Z",
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"sealedMode": true
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}
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```
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- Console + Notify subscribe to `ledger.airgap.timeline` events to show sealed-mode summaries.
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## 7. Offline kit considerations
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- Include bundle provenance schema, staleness policy config, CLI scripts (`stella airgap bundle import`, `stella ledger evidence link`), and sample manifests.
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- Provide validation script `scripts/ledger/validate-airgap-bundle.sh` verifying manifest signatures, timestamps, and ledger enrichment before ingest.
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- Document sealed-mode toggles ensuring no external egress occurs when importing bundles.
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---
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*Draft 2025-11-13 for LEDGER-AIRGAP-56/57/58 planning.*
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