Files
kandev/docs/plans/plugins/task-09-api.md
T
João Salavisa e145d48f22 feat: add plugin system with grpc runtime and native ui plugins (#1742)
* feat: add plugin system with grpc runtime and native ui plugins

- go plugin backends ship as release tarballs (per-platform binaries, checksums) that
  kandev installs from url/upload or filesystem sideload+sync, then spawns and
  supervises via hashicorp/go-plugin (unix socket / loopback tcp+automtls)
- strict typed grpc contract (kandev.plugin.v1): DeliverEvent/InvokeTool/HandleWebhook
  plus a capability-gated host service (state, secrets, emit); author sdk in
  pkg/pluginsdk; packaging cli in cmd/plugin-pack
- native frontend bundles: window.registerKandevPlugin + registry/host loader with
  dynamic routes, nav items, slots and ws handlers; plugins settings page with
  install dialog, sync button and enable/disable/uninstall
- gated behind the plugins feature flag (prod off, dev/e2e on); covered by unit and
  integration tests plus playwright e2e against a real packaged fixture plugin

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(plugins): hydrate base app context on plugin routes

Plugin-owned SPA routes classify as RouteUnknown, so the boot payload shipped
only feature flags — no workspaces, workflows, or kanban context. Native plugin
UI (e.g. host.ui.TaskCreateDialog) then had an empty store. Hydrate the same
base context as the Home route for unknown SPA routes.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* feat(plugins): expose TaskCreateDialog on host.ui

Lets a native plugin open kandev's real create-task modal (prefilled via
initialValues) instead of POSTing directly.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(plugins): harden filesystem/URL sinks against CodeQL findings

Add sink-level guards on the plugin trust boundary: securejoin containment on
archive extraction (zip-slip), plugin-id validation before every fs_store path,
http/https scheme validation on install-from-URL, and non-interpolated ws-handler
error logging.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(plugins): address review findings (races, resource caps, lifecycle)

- serialize per-plugin startup to close a TOCTOU double-spawn race, and let a
  plugin restart after exhausting attempts
- bound plugin startup with an explicit 30s timeout
- reject backslash paths and cap decompressed bytes by actual size in pkgtar;
  only mark a package Signed when a verifier actually ran and passed
- delete plugin_state on uninstall; validate webhook keys against the manifest
  and cap webhook body size; restart an active plugin when a new version installs

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(plugins): sanitize plugin-id path sinks for CodeQL

Pin the plugin id to a single path segment with filepath.Base at recordPath/
configPath and pkgtar.Remove — a barrier the taint analysis recognizes.
Behaviour-identical for valid ids (already validated by safePluginID); clears
the go/path-injection alerts.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(plugins): inline plugin-id validation at path sinks for CodeQL

filepath.Base does not strip '..', so it is not a path-injection barrier. Call
the recognized safePluginID / id-pattern guard inline in Delete/GetConfig/
SetConfig and pkgtar.Remove — the same barrier that already cleared the Get sink.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(plugins): address code-review findings (backend)

- add capability-gating tests for the Host RPC service (was untested)
- close a stop-during-start orphan race so Disable/Uninstall can't leave a
  supervised subprocess behind
- on failed upgrade, remove only the new version dir (not all versions + data);
  restart the prior version
- validate manifest version and reject ids ending in .config (record-file alias)
- make Deliverer.Refresh non-blocking and cancel in-flight delivery on worker stop
- clamp out-of-range webhook status, skip-and-warn corrupt records in List,
  write records atomically, semver-aware sideload version pick

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(plugins): address code-review findings (frontend)

- wrap plugin routes + settings routes in a shared PluginErrorBoundary so a
  throwing plugin page shows a fallback instead of white-screening the SPA
- fix disable/re-enable in one session: keep the cached registration and
  re-run initialize instead of relying on a cached ES-module re-import
- prefix root-relative bundle/style URLs with apiBaseUrl (split-origin/Tauri)
- surface partial-install warnings via toast.warning instead of a bare success
- dedupe/remove injected style links on unload; gate PluginNavItems on the flag

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(plugins): serialize per-plugin lifecycle + guard config writes

- add a per-plugin keyed lock in Service so concurrent Enable/Disable/Install/
  Uninstall/UpdateConfig for one id are serialized (no status-machine race)
- take s.mu in SetConfig/GetConfig and write config atomically
- bound each plugin initialize() with a timeout so one hung bundle can't stall
  the rest of the boot load

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* test(plugins): split service_test.go to satisfy file-length lint

Move the install/URL test group into service_install_test.go; no logic change.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* ci: build and ship the e2e fixture plugin package to E2E shards

The plugin E2E specs' global-setup requires apps/backend/.build/kandev-plugin-e2e-1.0.0.tar.gz.
Build it in the E2E build job, upload it as an artifact, and download it in both
the regular and container shard jobs.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Kandev Agent <agent@kandev.dev>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-17 12:00:26 +01:00

77 lines
4.0 KiB
Markdown

---
id: task-09
title: HTTP API + auth middleware + capability checks + backendapp wiring
status: pending
wave: 2
depends_on: [task-05, task-06, task-07, task-08]
plan: docs/plans/plugins/plan.md
---
# HTTP API + auth middleware + capability checks + backendapp wiring
## Title
Expose `/api/plugins/*` (gin), the plugin-facing auth middleware + capability
gating, state/secrets APIs, webhook/UI proxy routes, tool-listing, and wire the
whole package into backendapp.
## Inputs
- Spec `docs/specs/plugins/spec.md` → "API surface" (all endpoints), "Permissions",
"Security".
- Routing precedent: `internal/jira/handlers.go` `RegisterRoutes(router, dispatcher,
svc, log)` → `router.Group("/api/...")`. Wiring precedent:
`internal/backendapp/services.go` `initJiraService` + `provideServices`, and
`internal/backendapp/helpers.go` `routeParams` (add a `pluginsSvc *plugins.Service`
field) + `registerRoutes` (call `plugins.RegisterRoutes(...)`), gated on
`p.features.Plugins` (task-10 adds the flag).
## Acceptance
1. `internal/plugins/handlers.go` `RegisterRoutes(router, svc, log)`:
- Management (operator): `POST /api/plugins/register`, `GET /api/plugins`,
`GET /api/plugins/:id`, `PATCH /api/plugins/:id`, `DELETE /api/plugins/:id`,
`POST /api/plugins/:id/enable`, `POST /api/plugins/:id/disable`.
Register returns cleartext creds once. List/Get never expose creds.
- `GET /api/plugins/tools` → aggregate declared tools across active plugins
(id, name, display_name, description, input_schema). (Listing only — not wired
into agent sessions.)
- `GET /api/plugins/:id/ui/*path` and `POST` → UIProxy (task-08). Public to the
browser session (operator UI); no plugin api-key required.
- `POST /api/plugins/:id/webhooks/:key` → WebhookProxy (task-08). External;
validates plugin active + key declared.
2. `internal/plugins/middleware.go`: `PluginAuth(svc)` gin middleware — parses
`Authorization: Bearer <api_key>`, resolves plugin via `svc.AuthenticatePlugin`,
sets plugin in context. `RequireCapability(kind, resource)` returns
`403 {"error":"capability '<kind>:<resource>' not declared"}` when the plugin's
manifest lacks it. Apply to plugin-facing routes:
- State API: `GET/POST/DELETE /api/plugins/:id/state`, `GET .../state/list`
(requires `capabilities.state`), backed by task-03 store, always scoped to the
authenticated plugin id (a plugin cannot touch another's id → 403 if mismatch).
- Secrets API: `GET /api/plugins/:id/secrets/:ref` (requires `capabilities.secrets`)
→ resolve via secretadapter.
- Office write-back used by plugins is OUT OF SCOPE here (api_read/api_write
office endpoints deferred) — implement state + secrets only; leave a comment
noting office data endpoints are follow-up.
3. `internal/backendapp` wiring: `initPluginsService(...)` in services.go calling
`plugins.Provide(...)`; field on `Services` + `routeParams`; `registerRoutes`
calls `plugins.RegisterRoutes` and starts health monitor + delivery via the
returned service (respect `addCleanup`). Gate registration on `features.Plugins`.
## Files
- `apps/backend/internal/plugins/handlers.go` + `handlers_test.go`
- `apps/backend/internal/plugins/middleware.go` + `middleware_test.go`
- `apps/backend/internal/plugins/dto.go` (request/response DTOs)
- edits: `apps/backend/internal/backendapp/services.go`,
`apps/backend/internal/backendapp/helpers.go`
## Verification
- `go test ./internal/plugins/... ./internal/backendapp/...` from `apps/backend`
- `make -C apps/backend build` and `make -C apps/backend lint`
## Output contract
Report: full route table, middleware/capability behavior, wiring points touched in
backendapp, and confirmation the feature gate is respected. This is the last
backend task — ensure `make -C apps/backend build test lint` pass for the package.
## Dependencies
task-05, task-06, task-07, task-08. (Feature flag field from task-10 — if task-10
hasn't landed, add the `Plugins bool` field to FeaturesConfig yourself and note it.)