sulthan
27cf0955de
Closes #24. Child of #18; based on current main (includes Postgres, Reader table, Discord OAuth).
## What
Each Reader's userscript credential is derived from `TOKEN_KEY`, their Discord id and a token epoch (HMAC-SHA256, hex); only its SHA-256 sits in `readers.token_sha256` (new `token_epoch` column, migration 0006). One credential authenticates the script download path and the API bearer header.
- `internal/token`: derivation + hashing; the seed refreshes the owner's epoch-0 hash only before first rotation, so a restart can never resurrect a rotated-away credential
- `httpmw.Auth`/`ResolveReader`: acting Reader resolved from the credential hash, stashed in request context; the retired global `API_TOKEN` resolves to the owner until `API_TOKEN_GRACE_UNTIL` (enforced in code, logged per use) on both the bearer and script-download paths
- Userscript handler renders the bindmounted file with the resolved Reader's credential substituted for `__API_TOKEN__`; a legacy-path request during grace serves the derived credential, so installed devices self-migrate on their next update poll
- Web UI: "Userscripts" panel — session-gated install endpoints render the script directly (credential never in markup, address bar, or a redirect), confirm-gated rotation with an atomic epoch bump + hash rewrite and a reinstall warning
- Both userscripts carry `__API_TOKEN__` placeholders; the committed global-token literal is removed
## Design note
Credentials are derived rather than stored-random because the server must rebuild install URLs after restarts while the DB holds only hashes. HMAC output is high-entropy and unbrute-forceable; the AC's intent (unguessable, DB-leak-proof) is met.
## Deploy (also in DEPLOY.md)
1. Add `TOKEN_KEY` (`openssl rand -hex 32`) — required; changing it later invalidates every credential.
2. Keep `API_TOKEN` + set `API_TOKEN_GRACE_UNTIL` for the 14-day window.
3. After deploy, sign in → Userscripts → reinstall both scripts on every device. This also retires the old global credential for real — its literal survives in git history (present since 0ef5286), so rotation is what kills it.
## Verification
- Full Go suite green against real Postgres per test; userscript JS suite 45/45
- New router-level tests: per-Reader isolation (read/write/delete), grace expiry on bearer + script path, self-migrating legacy path, install serving, rotation (old cred 401/404, new cred works, install renders new credential), app page leaks no credential
- Store tests: hash lookup, token info, atomic rotation with stale-epoch rejection, rotation survives restart
- Live smoke of the built binary: grace acceptance logged, derived auth, substitution, restart resilience, stored hash = SHA-256 of derived credential
Reviewed-on: #32
Co-authored-by: Sulthan Zaki <sultankiki05@gmail.com>
Co-committed-by: Sulthan Zaki <sultankiki05@gmail.com>
28 lines
1.4 KiB
HTML
28 lines
1.4 KiB
HTML
{{/* The userscript install panel. Each link serves the script rendered
|
|
with the acting Reader's credential inside it, so the credential never
|
|
appears in this page's markup, the address bar, or a redirect. Rotation
|
|
is confirm-gated because it invalidates every installed copy at once;
|
|
the response swaps this same panel open with the reinstall warning. */}}
|
|
{{define "setup"}}
|
|
<details class="setup" id="setup"{{if .Rotated}} open{{end}}>
|
|
<summary>Userscripts</summary>
|
|
<p class="setup-copy">Install each script once per device. They keep your
|
|
bookmarks in sync across every site and update themselves from here.</p>
|
|
<p class="setup-links">
|
|
<a class="ghost" href="/install/manga-bookmark.user.js">Install Manga script</a>
|
|
<a class="ghost" href="/install/novel-bookmark.user.js">Install Novels script</a>
|
|
</p>
|
|
{{if .Rotated}}
|
|
<p class="setup-warn" role="status">Credential rotated — the old one no
|
|
longer works. Reinstall both scripts on every device now, or they will
|
|
silently stop syncing.</p>
|
|
{{else}}
|
|
<form class="setup-rotate" hx-post="/rotate-token" hx-target="#setup"
|
|
hx-swap="outerHTML"
|
|
hx-confirm="Rotation invalidates the current credential on every device immediately. You will have to reinstall both scripts everywhere. Rotate?">
|
|
<button type="submit" class="ghost">Rotate credential</button>
|
|
</form>
|
|
{{end}}
|
|
</details>
|
|
{{end}}
|