Claude Fable 5
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The install path records the SHA-256 of the delivered bundle ZIP (plugins.bundle_hash; pre-#232 installs show it as unknown until reinstalled). plugins.allowlist in instance_settings names permitted ids with their pinned hashes: empty (default) = not enforced, existing instances unchanged; non-empty = installs of unlisted or deviating bundles are rejected (plugin_not_pinned / plugin_hash_mismatch, 403), and an installed plugin outside the list or with a deviating hash does not load — absent from pond mount lists, frame/assets 404. Every rejection is audited (plugin.rejected, catalogue v1.5). A version bump changes the hash and therefore requires an explicit re-pin — the intended friction (ADR 0025). Admin UI shows observed vs pinned hash per plugin with pin/re-pin/unpin. Scope stated honestly in plugin-architecture.md: the pin answers "is this the reviewed bundle"; post-install disk tampering is platform integrity (ADR 0019), sandbox containment stays the sandbox's job. Hardening guide row + catalog advisory triage; residual risk R-03 resolved. e2e: empty-allowlist compatibility, pinned load, unpinned and tampered installs rejected and audited, pin drift blocks loading while the admin still sees the mismatch, version bump needs re-pin. Full api suite 101 files / 561 green. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AUtYMxwTCMHG9mVHnwbFg8
160 lines
16 KiB
Markdown
160 lines
16 KiB
Markdown
# Audit event catalogue
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**Catalogue version 1.5 (2026-07-31; 1.5 adds `plugin.rejected`,
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issue #232; 1.4 added `auth.proxy_rejected`, issue #215; 1.3 added `auth.identity_linked`, issue #214; 1.2 added
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`read_trail.pruned`, issue #224; 1.1 added `page.classification_*`,
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issue #205).**
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This is the operator-facing contract for the audit trail: every event id
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the application can emit, with its trigger, severity, actor/target
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semantics, and fields. SIEM/syslog rules written against this document
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survive application updates because of the compatibility promise below.
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The code half of this catalogue is `apps/api/src/audit/audit-actions.ts`
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(a typed union — an uncatalogued id cannot be emitted), and
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`audit-catalogue.test.ts` fails CI whenever this document and that code
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drift. Changing either alone is impossible.
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## Compatibility promise
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- **Ids are never repurposed.** The meaning of an id listed here is frozen.
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- **Adding events** bumps the catalogue's minor version; existing rules
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are unaffected.
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- **Retiring an event** (it stops being emitted) keeps its row here,
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marked retired, forever; removal of a row is a major version and is
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called out in the release notes.
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- Fields listed per event are stable; new optional fields may be added
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(minor version), fields are never renamed or repurposed.
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## Transport & field set
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Audit events reach the operator on **two channels**, both fed by the same
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`AuditService.record()` call:
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1. **stdout log line** (pino JSON, the forwarding channel): the container
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runtime captures stdout (Docker `json-file` with rotation); the
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operator's collector (promtail/fluent-bit/vector/…) picks it up from
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there and forwards to syslog/SIEM. **There is deliberately no
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application-side syslog client** — transport, TLS and buffering are the
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collector's job, one layer below the app.
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2. **`audit_log` table** (the queryable trail with its own retention,
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#196), shown in the Site-Admin panel.
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Every audit stdout line carries this stable field set:
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| Field | Meaning |
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| -------------------------- | ---------------------------------------------------------------------------------------------------------------- |
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| `msg` | `audit: <event id>` — the selector; collectors match on the `audit: ` prefix and take the id from the remainder. |
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| `severity` | The catalogue severity of the id (`info` \| `notice` \| `warning` \| `critical`) — the routing hint for rules. |
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| `actor` | Acting user id, or `null` for anonymous/system events (each row below states which). |
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| `targetType` / `targetId` | What the event is about (absent when the event has no target). |
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| _event fields_ | The per-event fields from the tables below, flattened into the line's top level. |
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| `level`, `time`, `context` | pino plumbing: always `30`/epoch-ms/`AuditService`. Severity routing uses `severity`, not `level`. |
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The `audit_log` row stores the same data structurally: `action`,
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`actor_id`, `target_type`, `target_id`, `details` (the per-event fields as
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JSON), `at`. Secrets, tokens, request bodies, and page content never
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appear in either channel (security.md §Logging).
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## Events
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Severity vocabulary: `critical` = page someone (integrity/security
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failure), `warning` = feeds detection (suspicious or destructive),
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`notice` = configuration/privilege change, `info` = normal lifecycle.
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### Authentication (`auth.*`)
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| Id | Trigger | Severity | Actor | Target | Fields |
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| ---------------------- | ----------------------------------------------------------------------------------------- | -------- | ------------------------------------ | ------ | ------------------------------------- |
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| `auth.signup` | Account created via self-registration or OIDC just-in-time (issue #214) | info | the new user | — | `provider` (optional; absent = local) |
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| `auth.email_verified` | E-mail double-opt-in completed | info | the verified user | — | — |
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| `auth.login_failed` | Login rejected (bad credentials) | warning | matched user, `null` if unknown name | — | — |
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| `auth.login_succeeded` | Session created | info | the user | — | `provider` (optional; absent = local) |
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| `auth.password_reset` | Password changed via reset token | notice | the user | — | — |
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| `auth.identity_linked` | OIDC identity linked to an existing account via the explicit link flow (issue #214) | notice | the linking user | — | `provider` |
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| `auth.proxy_rejected` | Proxy-auth header received from a peer outside the allowlist — spoof attempt (issue #215) | warning | `null` (unauthenticated) | — | `peer`, `header` |
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### Access & membership (`grant.*`, `member.*`)
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| Id | Trigger | Severity | Actor | Target | Fields |
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| --------------------- | --------------------------- | -------- | ------------- | ------ | ----------------------------------------------------------------------- |
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| `grant.created` | Access rule added to a pond | notice | granting user | `pond` | `grantId`, `subject`, `subjectId`, `role`, `scope`, `scopeId`, `effect` |
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| `grant.deleted` | Access rule removed | notice | acting user | `pond` | `grantId`, `subjectId`, `role` |
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| `member.added` | User added to a pond | notice | acting user | `pond` | `member` (user id), `role` |
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| `member.role_changed` | Member's role changed | notice | acting user | `pond` | `member`, `role` (new) |
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| `member.removed` | Member removed from a pond | notice | acting user | `pond` | `member` |
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### Administration (`user.*`, `quota.*`, `settings.*`, `job.*`)
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| Id | Trigger | Severity | Actor | Target | Fields |
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| -------------------------- | ------------------------------------------------------ | -------- | --------------- | ---------------- | -------------------- |
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| `user.disabled_set` | Site Admin disables/enables an account | notice | the admin | `user` | `disabled` (bool) |
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| `user.site_admin_set` | Site-Admin privilege granted/revoked | notice | the admin | `user` | `isSiteAdmin` (bool) |
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| `user.deleted` | Account deleted by a Site Admin | notice | the admin | `user` | — |
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| `user.pseudonymized` | GDPR pseudonymization of authorship completed | notice | `null` (system) | `user` | — |
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| `user.verification_resent` | Site Admin re-sends the verification mail | info | the admin | `user` | — |
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| `quota.override_set` | Per-user/per-pond quota override set | notice | the admin | `user` \| `pond` | `quotaKey`, `value` |
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| `quota.override_cleared` | Quota override removed | notice | the admin | `user` \| `pond` | `quotaKey` |
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| `settings.changed` | Instance setting written | notice | the admin | `setting` (key) | — |
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| `job.triggered` | Maintenance job started manually from the System panel | info | the admin | `job` (name) | `outcome` |
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### Classification (`page.classification_*`, ADR 0022, issue #205)
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| Id | Trigger | Severity | Actor | Target | Fields |
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| ----------------------------- | ------------------------------------------------------------------------------------------------------- | -------- | --------------- | ------ | ------------------------------------------------------------------------ |
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| `page.classification_raised` | Page's VS-NfD level raised — by an editor, or automatically when moved under a higher-classified parent | notice | the acting user | `page` | `from`, `to` (levels, lowercase), `trigger` (`edit` \| `move`), `pondId` |
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| `page.classification_lowered` | Page's VS-NfD level lowered — requires the dedicated capability (pond-wide Pond Admin) | warning | the acting user | `page` | `from`, `to`, `trigger` (`edit`), `pondId` |
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### Content integrity & lifecycle (`file.*`, `pond.*`, `audit.*`)
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| Id | Trigger | Severity | Actor | Target | Fields |
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| ----------------------- | -------------------------------------------------------------------- | -------- | ---------------------------------- | ------------ | ---------------------------------------------------------------------------------------------------------------------------------------- |
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| `file.integrity_failed` | Attachment download hash mismatch — fail-closed (issue #199) | critical | `null` (any downloader; detection) | `attachment` | `pondId`, `expected` (stored sha256), `actual` (computed sha256) |
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| `pond.purged` | Pond irreversibly destroyed (manual or trash retention, issue #193) | notice | admin, `null` when retention-run | `pond` | `trigger` (`manual` \| `retention`) plus per-object-type deletion counts (e.g. `pages`, `attachments`, … — informational, keys may grow) |
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| `audit.pruned` | Audit retention deleted rows past the period (issue #196) | info | `null` (system) | — | `count`, `cutoff` (ISO), `retentionDays` |
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| `read_trail.pruned` | Read-trail retention removed events past its own period (issue #224) | info | `null` (system) | — | `count`, `cutoff` (ISO), `retentionDays` |
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### Public API (`api.*`)
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| Id | Trigger | Severity | Actor | Target | Fields |
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| ------------------- | ----------------------------------------- | -------- | ----------- | ----------------------- | -------------------------------- |
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| `api.token_created` | Personal access token created | info | token owner | `api_token` | `name`, `scope`, `ponds` (count) |
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| `api.token_revoked` | Personal access token revoked | info | token owner | `api_token` | — |
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| `api.write` | Mutation performed through the public API | info | token owner | `api_write` (object id) | `op`, `tokenId`, `tokenName` |
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### Plugins (`plugin.*`)
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| Id | Trigger | Severity | Actor | Target | Fields |
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| --------------------- | ------------------------------------------------------------ | -------- | ------------------------------------ | -------- | ------------------------------------------------------------------------------------------------------------------------------- |
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| `plugin.installed` | Plugin package installed or updated | notice | admin, `null` for dropzone drop | `plugin` | `version`, `update` (bool) |
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| `plugin.rejected` | Install or load blocked by the hash-pinning allowlist (#232) | warning | admin for installs, `null` for loads | `plugin` | `surface` (`install`/`load`), `reason` (`not_pinned`/`hash_mismatch`/`unpinned`/`mismatch`), `version`, `bundleHash` (installs) |
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| `plugin.mode_set` | Instance mode changed (disabled/optional/required) | notice | the admin | `plugin` | `mode` |
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| `plugin.uninstalled` | Plugin removed | notice | the admin | `plugin` | — |
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| `plugin.pond_toggled` | Optional plugin toggled for one pond | info | the pond admin | `pond` | `plugin`, `enabled` |
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### Backup & restore (`backup.*`)
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| Id | Trigger | Severity | Actor | Target | Fields |
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| -------------------------- | ------------------------------------------------- | -------- | --------- | -------------------- | ------------------ |
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| `backup.settings_changed` | Backup target settings written | notice | the admin | — | `nextcloudEnabled` |
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| `backup.run_triggered` | On-demand backup requested ("Back up now") | info | the admin | — | — |
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| `backup.restore_requested` | In-app restore requested (type-to-confirm passed) | warning | the admin | `backup` (backup id) | `source` |
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### First-run setup (`setup.*`)
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| Id | Trigger | Severity | Actor | Target | Fields |
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| --------------------- | ---------------------------------------- | -------- | ----------------- | ------ | ------ |
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| `setup.preseeded` | Instance pre-configured from stage env | info | the seeded admin | — | — |
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| `setup.admin_created` | First Site Admin created by the wizard | notice | the created admin | `user` | — |
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| `setup.smtp_stored` | SMTP settings stored by the wizard | info | the admin | — | — |
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| `setup.completed` | Setup wizard finished; instance unlocked | info | the admin | — | — |
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## Scope boundary
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Content activity (who edited which page, file up/downloads that succeed,
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exports, labels) intentionally stays out of this trail — it answers "who
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changed access/configuration and did the platform detect tampering", not
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"who edited what" (security.md §Logging). The read-access trail for
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classified content is a separate, VS-NfD-specific mechanism (#222–#225)
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with its own catalogue entry when it lands.
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