Companion to DC-042 (tailscale-manager). Adds the write-side of Tailscale
integration — REST client for api.tailscale.com that lets DashCaddy
manage its own tailnet (devices, pre-auth keys, users, ACL).
src/managers/tailscale-coord.js — new module:
* Ping, list/get/delete devices, create/list/delete pre-auth keys,
list users, get/update ACL
* 5min read cache, 60s device-list cache, 1hr ping cache
* Cache invalidation on writes
* Graceful {configured:false} when no token
* TailscaleCoordError class with code mapping (unauthorized, not_found,
rate_limited, server_error)
* fetchImpl injection point for tests; native https in production
* 45 unit tests covering all paths
src/context/index.js — new tailscaleCoord namespace:
* getClient() lazy-builds a fresh client each call (token re-read from
credentialManager so settings changes take effect without restart)
* loadMetadata/saveMetadata for tailscale-config.json
* setApiToken/hasApiToken wrappers around credentialManager
routes/tailscale-admin.js — new routes:
* GET /api/v1/tailscale/settings — config status, never the token
* PUT /api/v1/tailscale/settings — validate + store encrypted
* DELETE /api/v1/tailscale/settings — wipe token + metadata
* POST /api/v1/tailscale/settings/test — ping without saving
* GET /api/v1/tailscale/admin/devices — full device list
* DELETE /api/v1/tailscale/admin/devices/:id — revoke device
* GET /api/v1/tailscale/admin/users — tailnet users
* GET /api/v1/tailscale/admin/keys — pre-auth key metadata
* POST /api/v1/tailscale/admin/keys — create pre-auth key (returns secret ONCE)
* DELETE /api/v1/tailscale/admin/keys/:id — revoke pre-auth key
* 29 route integration tests with supertest
src/app.js — wired the new router into the /api/v1/tailscale mount.
BACKLOG.md — DC-042 marked done, DC-043 added with full design notes.
Note: deliberately no token auto-rotation — Tailscale API keys
don't auto-renew, and silently re-issuing admin credentials
would erode the audit-trail checkpoint that token expiry
provides.
Tests: 1167 -> 1212 (+45), all green. Lint clean.
The previous getTailscaleStatus() in src/app.js was a hard-coded
`return null` stub with a TODO saying it would be populated by context.
The context had a tailscale.* namespace declared with null function
stubs (routes/context.js:71), but nothing ever set them to real
functions. routes/tailscale.js has been calling ctx.tailscale.getStatus()
/ getLocalIP() / isTailscaleIP() and getting undefined back, silently
returning empty device lists. The tailscaleAuthMiddleware's allowedTailnet
check (DC-121, device-not-in-tailnet 403) was dead code for the same reason.
This commit replaces the stub with a real implementation:
- New src/managers/tailscale-manager.js shells out to the host's
`tailscale status --json` (cached 5 minutes), parses the result, and
exposes getStatus / getLocalIP / getSummary / getDevices / isTailscaleIP /
invalidateCache / getAccessToken (stub) / startSyncTimer / stopSyncTimer
/ syncAPI (stub). All failure modes (CLI missing, tailscaled down,
malformed JSON, EACCES) are handled gracefully — return null with no
cache poisoning.
- src/context/index.js now wires the manager into ctx.tailscale.* so
routes/tailscale.js and middleware.js's allowedTailnet gate get the
real functions.
- src/app.js:189 getTailscaleStatus() now delegates to the manager
instead of returning null.
- The duplicate isTailscaleIP() in src/app.js:179 (no malformed-input
guards) is removed in favor of the canonical version in
src/utilities/network-detector.js (DC-031) which the manager also uses.
- start.sh now bind-mounts /usr/bin/tailscale (statically linked Go binary
— works under Alpine libc) and /var/run/tailscale/ into the container,
read-only. Lets the container invoke the CLI without needing its own
tailscale install.
- 41 new unit tests in __tests__/tailscale-manager.test.js cover: CLI
success/missing/daemon-down/malformed-JSON paths, 5-min cache hit/miss,
1-hour installed-cache hit/miss, getLocalIP IPv4/IPv6/missing-choices,
getSummary shape, getDevices shape with full + minimal peer fields,
startSyncTimer/stopSyncTimer interval + idempotency, TAILSCALE_BIN env
override.
Total: 1138 tests pass (was 1097, +41 new), 0 new ESLint warnings.
What this unlocks:
- /api/v1/tailscale/status → real installed/connected/hostname/ip/
peerCount/onlinePeerCount summary instead of empty
- /api/v1/tailscale/devices → real device list (was returning [])
- /api/v1/tailscale/check-connection → works (uses real isTailscaleIP)
- tailscaleAuthMiddleware allowedTailnet check (DC-121) is no longer
dead code — a request from a Tailscale IP not in the allowed tailnet
now actually gets 403 instead of being silently allowed.
After the DC-005 module reorganization (41 files moved into src/ subdirs),
138 test suites failed because the refactor script's path-rewrite logic
missed three categories:
1. Files inside src/ doing 'require("./src/...")' — should be 'require("../...")'
2. Files in src/X/Y/ doing 'require("../../../src/...")' — should be 'require("../../...")'
3. Test files in __tests__/ with leftover 'require("../../../src/...")' paths
Root cause: the original refactor script ran before all files were moved,
so it computed relative paths against stale filesystem state.
Result:
- 30/30 test suites pass
- 879/879 tests pass (was: 18/30 suites, 614/687 tests)
Also fixed:
- routes/apps/restore.js: wrong responses import path
- routes/*/*.js: '../../src/utilities/X' → '../src/utilities/X' (depth 2 routes)
- Set Domain=.sami on session + CSRF cookies so browsers send them to all subdomains
- This fixes Caddy forward_auth returning 401 for radarr/sonarr/prowlarr
- Fix login URL concatenation bug (radarr.samilogin -> radarr.sami/login)
- Fix getSetCookie() missing from _httpsFetch/_httpFetch response objects
- Fix array/string handling for set-cookie header in session-handlers fallback
- Refactor csrf-protection to createCSRFMiddleware() factory with cookieDomain support
- Pass renewCSRFToken through middleware deps chain to TOTP route
Krystie