68 lines
3.2 KiB
JavaScript
68 lines
3.2 KiB
JavaScript
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/// <reference path="../pb_data/types.d.ts" />
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// Encrypted addon-config sync (epic #6, issue #20).
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//
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// #11 syncs watchlist / resume / prefs so a fresh sign-in restores your list and
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// progress — but not the *addons*, so a fresh TV would have nothing to play from.
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// The obvious fix is "sync the addon config too", except the addon "tokens" are
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// base64'd **plaintext credentials** (prehraj.to login, TorBox API key) plus the
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// TMDB key. The account is deliberately not E2E — an easy call for watch history,
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// the wrong one for passwords — so this one blob is encrypted **client-side**
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// before it ever reaches here.
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//
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// This collection therefore holds ciphertext the server can't read:
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// - `blob` — AES-GCM ciphertext (nonce ‖ ciphertext ‖ tag), base64. Opaque.
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// - `salt` — per-account KDF salt, base64. NOT secret (a salt never is); it
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// lives here so a second device can derive the same key from the
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// user's password. The key itself never leaves the device.
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// - `kdf` — key-derivation descriptor (e.g. "pbkdf2-sha256-210000") so the
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// params can move forward without guessing how an old blob was made.
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//
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// Same two-clock model as the #11 collections: client-set `updatedAt` resolves
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// last-write-wins; the server autodate `updated` is the pull cursor. One row per
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// profile (unique index), owned via `profile.user = auth.id` like everything else.
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migrate((app) => {
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const profiles = app.findCollectionByNameOrId("profiles")
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const addonConfig = new Collection({
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type: "base",
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name: "addon_config",
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// Rows belong to a profile; ownership traverses profile.user, exactly as the
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// watch_state / watchlist / prefs collections do.
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listRule: "@request.auth.id != '' && profile.user = @request.auth.id",
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viewRule: "@request.auth.id != '' && profile.user = @request.auth.id",
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createRule: "@request.auth.id != '' && profile.user = @request.auth.id",
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updateRule: "@request.auth.id != '' && profile.user = @request.auth.id",
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deleteRule: "@request.auth.id != '' && profile.user = @request.auth.id",
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fields: [
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{
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type: "relation",
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name: "profile",
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required: true,
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collectionId: profiles.id,
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cascadeDelete: true,
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maxSelect: 1,
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minSelect: 0,
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},
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// Ciphertext only. Small in practice (a few URLs + keys), but leave room.
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{ type: "text", name: "blob", required: true, max: 100000 },
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{ type: "text", name: "salt", required: true, max: 200 },
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{ type: "text", name: "kdf", required: true, max: 100 },
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// Client-set clock: when the config was actually changed (last-write-wins).
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{ type: "date", name: "updatedAt", required: true },
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// Server autodate: the pull cursor (monotonic in server time).
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{ type: "autodate", name: "updated", onCreate: true, onUpdate: true },
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],
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indexes: [
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"CREATE UNIQUE INDEX `idx_addon_config_profile` ON `addon_config` (`profile`)",
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],
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})
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app.save(addonConfig)
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}, (app) => {
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// ---- Down migration ----------------------------------------------------
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try {
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app.delete(app.findCollectionByNameOrId("addon_config"))
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} catch (_) { /* already gone */ }
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})
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