messages.ts

1/**2 * messages.ts — the only background message handler.3 *4 * All `chrome.runtime.onMessage` handling for the service worker lives here.5 * Do not handle messages inline in entry.ts, alarms.ts, or any other6 * background file. Every background-bound MessageType in shared/types.ts7 * must have a case below. Content-script-bound message types (PING,8 * SUMMON_AUTOFILL, VAULT_LOCKED) are documented in shared/types.ts and9 * intentionally have no case here — they are sent *to* content scripts.10 */1112import { copyToClipboard } from "./clipboard";13import { setupAutoLock, touchAutoLock } from "./alarms";14import { runSelfTest } from "./self-test";15import * as vault from "./vault";16import {17  handleEstimateCodexPages,18  handleGetCodexVaultData,19  handleRestoreFromCodex,20} from "./codex-handlers";21import type { CodexRestorePayload } from "../shared/codex-types";22import {23  activateLicense,24  deactivateLicense,25  getLicenseInfo,26  getLicenseKey,27  isProUser,28  markCelebrationPlayed,29  shouldPlayCelebration,30} from "./license";31import {32  completeFirefoxPasskeyCreate,33  getPasskeyProviderState,34  getPendingPasskeyRequest,35  handleFirefoxPasskeyCreate,36  handleFirefoxPasskeyGet,37  handlePasskeyHasCredentials,38  initiateFirefoxPasskeyCreate,39  isPasskeyOfferDeclined,40  onVaultUnlocked,41  recordPasskeyOfferDecline,42  resolvePendingPasskeyRequest,43  setPasskeyProviderEnabled,44} from "./passkey";45import { buildAdvancedHealthReport } from "./health";46import { storageClear } from "../shared/storage";47import { findInvalidWords } from "../shared/recovery-words";48import type {49  Message,50  MessageResponse,51  MessageType,52  ProFeature,53  VaultEntry,54} from "../shared/types";55import { isPasskeyOnly } from "../shared/types";56import { isNativePlatform, nativePlugin } from "../shared/native";57import { predictBatch as mlPredictBatch } from "./ml";58import type { MLFieldFeatures } from "../shared/ml";59import { buildLocalIdentity, setDeviceName as setDeviceNameV3 } from "./chirp-identity";60import {61  listPairedDevices as listPairedDevicesV3,62  removePairedDeviceById as removePairedDeviceByIdV3,63  upsertPairedDevice as upsertPairedDeviceV3,64} from "./paired-devices";6566function unhexBytes(hex: string): Uint8Array {67  if (hex.length % 2 !== 0) throw new Error("invalid hex");68  const out = new Uint8Array(hex.length / 2);69  for (let i = 0; i < out.length; i++) {70    out[i] = parseInt(hex.slice(i * 2, i * 2 + 2), 16);71  }72  return out;73}7475/**76 * The single Pro gate. Every gated handler calls this first; the broadcast77 * lets the popup react (navigate to the License section, highlight the78 * relevant feature). Background never touches the popup view directly —79 * the popup owns navigation. See Projects.md "Pro gate rule".80 */81async function requirePro(82  feature: ProFeature,83  trigger: "user" | "background" = "user"84): Promise<{ allowed: boolean }> {85  if (await isProUser()) return { allowed: true };8687  if (trigger === "user") {88    // User deliberately triggered this feature — redirect the popup immediately.89    chrome.runtime90      .sendMessage({ type: "PRO_GATE_TRIGGERED", payload: { feature } })91      .catch(() => {92        // Popup may be closed — the gate signal is best-effort.93      });94  } else {95    // Background trigger (e.g. passive sync initiation) — no popup is open.96    // Queue a notice so the next popup open shows a soft banner instead of97    // silently failing.98    if (chrome.storage.session) {99      chrome.storage.session100        .set({ pendingProNotice: { feature, triggeredAt: Date.now() } })101        .catch(() => {});102    }103  }104105  return { allowed: false };106}107108// ---------------------------------------------------------------------------109// Feedback submission target. Empty disables network submission while the UI110// continues to function as a no-op (the handler returns ok:true without111// calling fetch). When set, the URL is validated by112// `isAllowedCanaryWebhookUrl` before any request.113// ---------------------------------------------------------------------------114115const FEEDBACK_ENDPOINT = "";116117const PRIVATE_IPV4_RANGES = [118  { prefix: "10." },119  { prefix: "127." },120  { prefix: "169.254." },121  { prefix: "192.168." },122];123124export function setupMessageHandler(): void {125  chrome.runtime.onMessage.addListener(126    (msg: unknown, sender, sendResponse) => {127      if (!isMessage(msg)) {128        sendResponse({ ok: false, error: "invalid_message" });129        return true;130      }131      handleMessage(msg, sender)132        .then(sendResponse)133        .catch((err) =>134          sendResponse({135            ok: false,136            error: err instanceof Error ? err.message : String(err),137          })138        );139      return true;140    }141  );142143  // Android: the chrome shim queues sendMessage calls until this handler is144  // registered. Without this hookup, every message hangs on Capacitor builds.145  // eslint-disable-next-line @typescript-eslint/no-explicit-any146  const reg = (globalThis as any).__peachRegisterMessageHandler;147  if (typeof reg === "function") {148    reg(async (m: unknown) => {149      if (!isMessage(m)) return { ok: false, error: "invalid_message" };150      try {151        return await handleMessage(m);152      } catch (err) {153        return {154          ok: false,155          error: err instanceof Error ? err.message : String(err),156        };157      }158    });159  }160161}162163function isMessage(m: unknown): m is Message {164  return typeof m === "object" && m !== null && "type" in m;165}166167export async function handleMessage(168  msg: Message,169  sender: Partial<chrome.runtime.MessageSender> = {}170): Promise<MessageResponse> {171  try {172    // Validate sender — only allow messages from our extension pages/scripts.173    // `sender.id` is undefined for messages originating from extension UI174    // (popup/options), which is legitimate; reject only when it is defined175    // and does not match our extension id.176    if (177      sender.id !== undefined &&178      sender.id !== chrome.runtime.id179    ) {180      return { ok: false, error: "invalid_sender" };181    }182183    if (shouldRefreshAutoLock(msg.type) && vault.isUnlocked()) {184      touchAutoLock();185    }186187    switch (msg.type) {188      case "CREATE_VAULT": {189        const { password } = msg.payload as { password: string };190        await vault.createVault(password);191        await setupAutoLock();192        broadcastToContentScripts({ type: "VAULT_UNLOCKED" });193        onVaultUnlocked();194        return { ok: true };195      }196      case "UNLOCK": {197        const { password } = msg.payload as { password: string };198        const ok = await vault.unlock(password);199        if (ok) {200          // KAT: verify the WebCrypto stack is healthy before the user relies on it.201          // Runs after unlock so latency is hidden behind the vault-load time.202          const kat = await runSelfTest();203          if (!kat.ok) {204            console.error("[Peach] Crypto self-test FAILED:", kat.error);205            await vault.lock();206            return { ok: false, error: "self_test_failed" };207          }208          await setupAutoLock();209          broadcastToContentScripts({ type: "VAULT_UNLOCKED" });210          onVaultUnlocked();211          if (isNativePlatform()) await publishInMemoryVault(vault.getEntries());212          return { ok: true };213        }214        // Distinguish corruption from wrong password so the popup can offer215        // a history-restore path instead of falsely accusing the user of216        // mistyping (M7/COR-007).217        const failure = vault.consumeLastUnlockFailureReason();218        if (failure) {219          return {220            ok: false,221            error: "vault_corrupted",222            canRestoreFromHistory: true,223          } as MessageResponse;224        }225        return { ok: false };226      }227      case "VALIDATE_RECOVERY_WORDS": {228        const { words } = msg.payload as { words: string[] };229        const invalid = findInvalidWords(words);230        return { ok: true, data: { valid: invalid.length === 0, invalid } };231      }232      case "GET_RECOVERY_WORDS": {233        // Must be unlocked and have recovery set up (vault must be v2.12+).234        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };235        try {236          const words = await vault.getRecoveryWords();237          return { ok: true, data: words };238        } catch (e) {239          // pre-v2.12 vault that hasn't migrated240          return { ok: false, error: "recovery_not_setup" };241        }242      }243      case "RECOVER_WITH_WORDS": {244        // User has lost their password but has their 12 recovery words.245        // We: (1) validate the words, (2) re-encrypt vault with new password.246        const { words, newPassword } = msg.payload as {247          words: string[];248          newPassword: string;249        };250        const stored = await vault.loadSlotA();251        if (!stored) return { ok: false, error: "no_vault" };252        if (!stored.recovery_salt || !stored.recovery_wrapped_root_key) {253          return { ok: false, error: "recovery_not_setup" };254        }255        // Unwrap the root key from the recovery escrow.256        try {257          await vault.unwrapRootKeyForRecovery(258            stored.recovery_wrapped_root_key,259            stored.recovery_nonce ?? "",260            stored.recovery_tag ?? "",261            stored.recovery_salt,262            words263          );264        } catch {265          return { ok: false, error: "invalid_recovery_words" };266        }267        // Re-key: derive fresh salt + key from new password.268        const newSalt = vault.generateSalt();269        const newKey = await vault.deriveKey(newPassword, newSalt);270        // Re-wrap root key under the new password's derived key so the same271        // recovery words continue to work after the password change.272        await vault.rewrapRootKeyForPassword(newKey, newSalt);273        // Re-encrypt vault entries with the new key.274        await vault.changePasswordWithNewKey(newSalt, newKey);275        await setupAutoLock();276        broadcastToContentScripts({ type: "VAULT_UNLOCKED" });277        return { ok: true };278      }279      case "LOCK":280        vault.lock();281        if (isNativePlatform()) await clearInMemoryVault();282        return { ok: true };283      case "IS_UNLOCKED":284        return { ok: true, data: vault.isUnlocked() };285      case "GET_VAULT_STATUS":286        return { ok: true, unlocked: vault.isUnlocked() };287      case "HAS_VAULT":288        return { ok: true, data: await vault.hasVault() };289      case "GET_ENTRIES":290        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };291        return { ok: true, data: vault.getEntries() };292      case "ADD_ENTRY": {293        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };294        const payload = msg.payload;295        if (!payload || typeof payload !== "object" || Array.isArray(payload)) {296          return { ok: false, error: "invalid_payload" };297        }298        const entry = await vault.addEntry(payload as Parameters<typeof vault.addEntry>[0]);299        return { ok: true, data: entry };300      }301      case "BATCH_ADD_ENTRIES": {302        const payload = msg.payload as { entries?: unknown } | null | undefined;303        if (!payload || typeof payload !== "object" || Array.isArray(payload)) {304          return { ok: false, error: "invalid_payload" };305        }306        if (!Array.isArray(payload.entries)) {307          return { ok: false, error: "invalid_payload" };308        }309        const added = await vault.batchAddEntries(payload.entries as Parameters<typeof vault.batchAddEntries>[0]);310        return { ok: true, data: added };311      }312      case "RESTORE_ENTRIES": {313        const payload = msg.payload as314          | { entries?: unknown; mode?: unknown; settings?: unknown }315          | null316          | undefined;317        if (!payload || typeof payload !== "object" || Array.isArray(payload)) {318          return { ok: false, error: "invalid_payload" };319        }320        if (!Array.isArray(payload.entries)) {321          return { ok: false, error: "invalid_payload" };322        }323        if (payload.mode !== "replace" && payload.mode !== "merge") {324          return { ok: false, error: "invalid_payload" };325        }326        const summary = await vault.restoreEntries(327          payload.entries as Parameters<typeof vault.restoreEntries>[0],328          payload.mode329        );330        if (payload.settings && typeof payload.settings === "object" && !Array.isArray(payload.settings)) {331          await vault.updateSettings(payload.settings as vault.VaultSettings);332        }333        return { ok: true, data: summary };334      }335      case "CLEAR_VAULT_ENTRIES": {336        await vault.clearVaultEntries("REPLACE_ALL");337        return { ok: true };338      }339      case "GET_VAULT_HISTORY": {340        const snapshots = await vault.getVaultHistory();341        return { ok: true, data: snapshots };342      }343      case "RESTORE_VAULT_SNAPSHOT": {344        const { snapshotId } = msg.payload as { snapshotId: string };345        const result = await vault.restoreVaultSnapshot(snapshotId);346        if (!result.ok) return { ok: false, error: result.error };347        broadcastToContentScripts({ type: "VAULT_LOCKED" });348        return { ok: true };349      }350      case "COUNT_DUPLICATES": {351        return { ok: true, data: vault.countDuplicates() };352      }353      case "DEDUPLICATE_ENTRIES": {354        const removed = await vault.deduplicateEntries();355        return { ok: true, data: removed };356      }357      case "UPDATE_ENTRY": {358        const payload = msg.payload as { id?: unknown; patch?: unknown } | null | undefined;359        if (!payload || typeof payload !== "object" || Array.isArray(payload)) {360          return { ok: false, error: "invalid_payload" };361        }362        const { id, patch } = payload;363        if (typeof id !== "string" || !id || !patch || typeof patch !== "object" || Array.isArray(patch)) {364          return { ok: false, error: "invalid_payload" };365        }366        // Single enforcement point for the Canary Entries Pro gate. Only367        // gates the transition into a canary entry — clearing/disabling a368        // canary (`canary: undefined`) is always allowed, so existing369        // canary entries remain manageable.370        const incomingCanary = (patch as { canary?: unknown }).canary;371        if (incomingCanary && typeof incomingCanary === "object") {372          const existing = vault.getEntryById(id);373          if (!existing?.canary) {374            const gate = await requirePro("canary_entry");375            if (!gate.allowed) return { ok: false, error: "pro_required" };376          }377        }378        await vault.updateEntry(id, patch as Parameters<typeof vault.updateEntry>[1]);379        return { ok: true };380      }381      case "ADD_ADDITIONAL_URL": {382        const { id, url } = msg.payload as { id: string; url: string };383        const trimmed = typeof url === "string" ? url.trim() : "";384        if (!trimmed) return { ok: false, error: "url_required" };385        const existing = vault.getEntryById(id);386        if (!existing) return { ok: false, error: "entry_not_found" };387        if (existing.type !== "login") return { ok: false, error: "login_entries_only" };388        const merged = [...(existing.additionalUrls ?? []), trimmed];389        await vault.updateEntry(id, { additionalUrls: merged });390        return { ok: true };391      }392      case "DELETE_ENTRY": {393        const { id } = msg.payload as { id: string };394        await vault.deleteEntry(id);395        return { ok: true };396      }397      case "GET_DELETED_ENTRIES":398        return { ok: true, data: vault.getDeletedEntries() };399      case "RESTORE_ENTRY": {400        const { id } = msg.payload as { id: string };401        await vault.restoreEntry(id);402        return { ok: true };403      }404      case "PURGE_ENTRY": {405        const { id } = msg.payload as { id: string };406        await vault.purgeEntry(id);407        return { ok: true };408      }409      case "PURGE_EXPIRED_TRASH": {410        const { retentionMs } = msg.payload as { retentionMs: number };411        const purged = await vault.purgeExpiredTrash(retentionMs);412        return { ok: true, data: purged };413      }414      case "SAVE_NOTE": {415        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };416        const { id, title, body } = msg.payload as { id?: string; title: string; body: string };417        const now = Date.now();418        if (id) {419          const existing = vault.getEntryById(id);420          if (!existing) return { ok: false, error: "not_found" };421          await vault.updateEntry(id, { title: title || "Untitled", notes: body, modifiedAt: now });422          return { ok: true, data: vault.getEntryById(id) };423        } else {424          const entry = await vault.addEntry({425            type: "note",426            title: title || "Untitled",427            notes: body,428            createdAt: now,429            modifiedAt: now,430          } as any);431          return { ok: true, data: entry };432        }433      }434      case "DELETE_NOTE": {435        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };436        const { id } = msg.payload as { id: string };437        await vault.deleteEntry(id);438        return { ok: true };439      }440      case "GET_NOTES": {441        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };442        const notes = vault.getEntries().filter(443          (e) => e.type === "note" && !e.deletedAt444        );445        return { ok: true, data: notes } as MessageResponse;446      }447      case "SEARCH_VAULT": {448        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };449        // AUD-002: shape-validate the payload before calling string methods.450        // A raw cast lets a malformed message crash the handler with TypeError.451        const { query } = (msg.payload ?? {}) as { query?: unknown };452        if (typeof query !== "string") {453          return { ok: false, error: "invalid_payload" };454        }455        const q = query.toLowerCase();456        const searchResults = vault.getEntries().filter(457          (e) =>458            !e.deletedAt &&459            (e.title.toLowerCase().includes(q) ||460              e.notes?.toLowerCase().includes(q) ||461              e.username?.toLowerCase().includes(q))462        );463        return { ok: true, data: searchResults } as MessageResponse;464      }465      case "AUTOFILL_QUERY": {466        if (!vault.isUnlocked()) {467          return { ok: false, error: "vault_locked" };468        }469        const { domain, includeAll, kind } = msg.payload as {470          domain: string;471          includeAll?: boolean;472          kind?: "login" | "card";473        };474        // kind="card": return saved cards as compact summaries for the475        // inline card silver platter. Cards are not domain-scoped — every476        // saved card is a candidate on every checkout page — so domain is477        // ignored when kind === "card".478        if (kind === "card") {479          const cards = vault.getEntries().filter((e) => e.type === "card");480          return {481            ok: true,482            data: cards.map((e) => ({483              id: e.id,484              title: e.cardNickname || e.title,485              cardholderName: e.cardholderName,486              last4: e.last4,487              expMonth: e.expMonth,488              expYear: e.expYear,489              network: e.network,490            })),491          };492        }493        // The inline selector fills username+password into a form. Passkey-494        // only entries have no password to fill; sign-in for those goes495        // through the WebAuthn path instead. Filter them out everywhere so496        // the user doesn't see four "GitHub" rows that mostly do nothing.497        // Notes and cards never belonged here either.498        const matches = (499          includeAll500            ? vault501                .getEntries()502                .filter((entry) => entry.type !== "note" && entry.type !== "card")503            : vault.queryDomain(domain)504        ).filter((entry) => !isPasskeyOnly(entry));505        return {506          ok: true,507          data: matches.map((e) =>508            includeAll509              ? {510                  id: e.id,511                  title: e.title,512                  hasPasskey: e.passkey !== undefined,513                }514              : {515                  id: e.id,516                  title: e.title,517                  username: e.username,518                  email: e.email,519                  url: e.url,520                  hasTotp: Boolean(e.totp),521                  hasPasskey: e.passkey !== undefined,522                }523          ),524        };525      }526      case "GET_ENTRY_FOR_FILL": {527        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };528        const { id } = msg.payload as { id: string };529        const entry = vault.getEntryById(id);530        if (!entry) return { ok: false, error: "entry_not_found" };531        // Passkey-only entries (passkey credential, no password) cannot be532        // filled into a form — sign-in goes through the WebAuthn path. A533        // login that ALSO has a passkey is still fillable for its password.534        if (isPasskeyOnly(entry)) return { ok: false, error: "passkey_not_fillable" };535        // Strip the passkey credential from the response — content scripts536        // never need the private key, and there's no reason to expose the537        // public credential metadata over the boundary either.538        const { passkey: _strippedPasskey, ...safeEntry } = entry;539        return { ok: true, data: safeEntry };540      }541      case "COPY": {542        // AUD-002: shape-validate the payload before passing to the clipboard543        // helper. A raw cast lets a malformed message reach the clipboard API544        // with a non-string and throw.545        const { text, label, alreadyWritten } = (msg.payload ?? {}) as {546          text?: unknown;547          label?: unknown;548          alreadyWritten?: unknown;549        };550        if (typeof text !== "string" || typeof label !== "string") {551          return { ok: false, error: "invalid_payload" };552        }553        await copyToClipboard(text, label, Boolean(alreadyWritten));554        return { ok: true };555      }556      case "CHECK_ALL_BREACHES": {557        const allEntries = vault.getEntries();558        const results: Record<string, number> = {};559        for (const entry of allEntries) {560          if (entry.type === "note") continue;561          if (!entry.password) continue;562          results[entry.id] = await vault.checkBreach(entry.password);563          // Small delay — be a good citizen to the HIBP API564          await new Promise((r) => setTimeout(r, 200));565        }566        // Persist any non-zero counts back to entries567        for (const [id, count] of Object.entries(results)) {568          const entry = vault.getEntryById(id);569          if (entry && (entry.breach ?? 0) !== count) {570            await vault.updateEntry(id, { breach: count > 0 ? count : undefined });571          }572        }573        return { ok: true, data: results };574      }575      case "GET_SETTINGS":576        return { ok: true, data: await vault.ensureSettingsLoaded() };577      case "UPDATE_SETTINGS": {578        const patch = msg.payload;579        if (!patch || typeof patch !== "object" || Array.isArray(patch)) {580          return { ok: false, error: "invalid_payload" };581        }582        await vault.updateSettings(patch as vault.VaultSettings);583        if (typeof (patch as Record<string, unknown>).autoLockMinutes === "number") {584          await setupAutoLock();585          if (vault.isUnlocked()) touchAutoLock();586        }587        return { ok: true };588      }589      case "GET_PENDING_PASSKEY":590        return { ok: true, data: await getPendingPasskeyRequest() };591      case "APPROVE_PASSKEY": {592        const { requestId } = msg.payload as { requestId: number };593        await resolvePendingPasskeyRequest(requestId, true);594        return { ok: true };595      }596      case "DENY_PASSKEY": {597        const { requestId } = msg.payload as { requestId: number };598        await resolvePendingPasskeyRequest(requestId, false);599        return { ok: true };600      }601      case "GET_PASSKEY_PROVIDER_STATE":602        return { ok: true, data: await getPasskeyProviderState() };603      case "SET_PASSKEY_PROVIDER_ENABLED": {604        const { enabled } = msg.payload as { enabled: boolean };605        // Disabling is always free; gating fires only when a free user is606        // trying to turn passkey interception on.607        if (enabled) {608          const gate = await requirePro("passkeys");609          if (!gate.allowed) return { ok: false, error: "pro_required" };610        }611        return { ok: true, data: await setPasskeyProviderEnabled(enabled) };612      }613      // AUD-003: this handler POSTs `entryTitle` to a user-configured HTTPS614      // endpoint. Intentional product behavior — users configure their own615      // dead-man's-switch. isAllowedCanaryWebhookUrl blocks localhost, private616      // IPs, and non-HTTPS schemes, but cannot defend against every DNS-617      // rebinding case. The UI under CanarySection (Entry.tsx) discloses to618      // users that the entry title leaves the device when the canary fires.619      case "FIRE_CANARY_PING": {620        // Canary alert fires unconditionally for any entry with canary: true.621        // The Pro gate only governs creation/flagging of canary entries; once622        // an entry is flagged, the alert path is a security property and must623        // never be license-gated.624        const { webhookUrl, entryTitle, trigger } = msg.payload as {625          webhookUrl: string;626          entryTitle: string;627          trigger: "password_copied" | "username_copied" | "autofilled" | "submitted" | "test";628        };629        if (!isAllowedCanaryWebhookUrl(webhookUrl)) {630          return { ok: false, error: "invalid_webhook_url" };631        }632        const body = JSON.stringify({633          event: trigger === "test" ? "peach_canary_test" : "peach_canary_accessed",634          entry: entryTitle,635          trigger,636          timestamp: new Date().toISOString(),637          source: "peach-extension",638        });639        if (trigger === "test") {640          // Permitted outbound fetch: user-configured canary alert endpoint641          // (validated by isAllowedCanaryWebhookUrl above). This is the642          // only non-HIBP outbound call in the extension — see643          // Projects.md §3.7. Test pings are awaited so the UI can show644          // success/failure.645          try {646            const res = await fetch(webhookUrl, {647              method: "POST",648              headers: { "Content-Type": "application/json" },649              body,650            });651            return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };652          } catch (err) {653            return { ok: false, error: err instanceof Error ? err.message : "network_error" };654          }655        }656        // Non-test triggers are fire-and-forget657        fetch(webhookUrl, {658          method: "POST",659          headers: { "Content-Type": "application/json" },660          body,661        }).catch(() => {});662        return { ok: true };663      }664      case "ACTIVATE_LICENSE": {665        const { key } = msg.payload as { key: string };666        const licenseInfo = await activateLicense(key);667        return { ok: true, data: licenseInfo };668      }669      case "GET_LICENSE": {670        const licenseInfo = await getLicenseInfo();671        return { ok: true, data: licenseInfo };672      }673      case "GET_LICENSE_KEY": {674        const key = await getLicenseKey();675        return { ok: true, data: key };676      }677      case "DEACTIVATE_LICENSE": {678        await deactivateLicense();679        return { ok: true };680      }681      case "SHOULD_PLAY_CELEBRATION": {682        const should = await shouldPlayCelebration();683        return { ok: true, data: should };684      }685      case "MARK_CELEBRATION_PLAYED": {686        await markCelebrationPlayed();687        return { ok: true };688      }689      case "GET_CODEX_VAULT_DATA": {690        // Pro-gated. requirePro broadcasts PRO_GATE_TRIGGERED on miss so the691        // popup navigates to the License section without further coordination.692        const gate = await requirePro("codex");693        if (!gate.allowed) return { ok: false, error: "pro_required" };694        return await handleGetCodexVaultData();695      }696      case "ESTIMATE_CODEX_PAGES": {697        const gate = await requirePro("codex");698        if (!gate.allowed) return { ok: false, error: "pro_required" };699        return await handleEstimateCodexPages();700      }701      case "RESTORE_FROM_CODEX": {702        // !! IMPORTANT: intentionally NOT Pro-gated. A free device must still703        // be able to restore a vault that was printed by a Pro user.704        // DO NOT add a Pro gate here.705        const payload = msg.payload as CodexRestorePayload;706        return await handleRestoreFromCodex(payload);707      }708      case "OPEN_PRO_GATE": {709        // Content script requests: open popup and navigate to License section.710        const { feature } = (msg.payload ?? {}) as { feature?: string };711        if (chrome.storage.session) {712          await chrome.storage.session.set({ pendingProGate: { feature: feature ?? "passkeys" } });713        }714        try { await chrome.action.openPopup(); } catch { /* badge fallback */ }715        return { ok: true };716      }717      case "GET_IDENTITIES": {718        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };719        return { ok: true, data: vault.getIdentities() };720      }721      case "TOUCH_AUTO_LOCK": {722        // touchAutoLock() is already called by shouldRefreshAutoLock above;723        // this case just gives the popup a typed message to keep the session alive.724        return { ok: true };725      }726      case "GET_ADVANCED_HEALTH_REPORT": {727        const gate = await requirePro("advanced_health");728        if (!gate.allowed) return { ok: false, error: "pro_required" };729        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };730        const report = await buildAdvancedHealthReport(vault.getEntries());731        return { ok: true, data: report };732      }733      case "IS_DURESS_ENABLED": {734        const enabled = await vault.isDuressEnabled();735        return { ok: true, data: enabled };736      }737      case "SETUP_DURESS": {738        // Single enforcement point for the Duress Vault Pro gate. Free users739        // who somehow reach this handler are rejected here; the popup also740        // pre-checks isPro() to avoid showing the setup form to free users,741        // but server-side is the actual security boundary.742        const gate = await requirePro("duress_vault");743        if (!gate.allowed) return { ok: false, error: "pro_required" };744        // MV3 service workers restart after inactivity, losing the in-memory745        // derived key. Detect this before calling setupDuress so the popup746        // can show a meaningful prompt to re-lock and re-unlock.747        if (!vault.isUnlocked()) return { ok: false, error: "session_expired" };748        const { duressPassword } = msg.payload as { duressPassword: string };749        await vault.setupDuress(duressPassword);750        return { ok: true };751      }752      case "DISABLE_DURESS": {753        await vault.disableDuress();754        return { ok: true };755      }756      case "VERIFY_MAIN_PASSWORD": {757        const { password } = msg.payload as { password: string };758        const ok = await vault.verifyMainPassword(password);759        return { ok: true, data: ok };760      }761      case "CHANGE_PASSWORD": {762        const { currentPassword, newPassword } = msg.payload as {763          currentPassword: string;764          newPassword: string;765        };766        const changed = await vault.changePassword(currentPassword, newPassword);767        return changed768          ? { ok: true }769          : { ok: false, error: "incorrect_current_password" };770      }771      case "GET_SITE_PASSWORD_POLICY": {772        const [tab] = await chrome.tabs.query({ active: true, currentWindow: true });773        if (!tab?.id) return { ok: true, data: null };774        try {775          const response = await chrome.tabs.sendMessage(tab.id, {776            type: "GET_SITE_PASSWORD_POLICY",777          });778          return (response as MessageResponse) ?? { ok: true, data: null };779        } catch {780          return { ok: true, data: null };781        }782      }783      case "RECORD_MANUAL_SUMMON": {784        const { domain } = msg.payload as { domain: string };785        const settings = vault.getSettings();786        const existing = settings.manualSummonDomains?.[domain];787        const now = Date.now();788        await vault.updateSettings({789          manualSummonDomains: {790            ...settings.manualSummonDomains,791            [domain]: {792              firstSummonedAt: existing?.firstSummonedAt ?? now,793              summonCount: (existing?.summonCount ?? 0) + 1,794              lastSummonedAt: now,795            },796          },797        });798        return { ok: true };799      }800      case "DECLINE_CARD_SAVE": {801        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };802        await vault.declineCardSaveOffer(last4, expMonth, expYear);803        return { ok: true };804      }805      case "IS_CARD_DECLINED": {806        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };807        const declined = await vault.isCardDeclined(last4, expMonth, expYear);808        return { ok: true, data: declined };809      }810      case "INITIATE_FIREFOX_PASSKEY_CREATE": {811        const { rpId, rpName, userName, userDisplayName } = (msg.payload ?? {}) as {812          rpId?: string;813          rpName?: string;814          userName?: string;815          userDisplayName?: string;816        };817        if (!rpId || !userName) return { ok: false, error: "rpid_and_username_required" };818        return await initiateFirefoxPasskeyCreate({819          rpId,820          rpName: rpName ?? rpId,821          userName,822          userDisplayName,823        });824      }825826      case "COMPLETE_FIREFOX_PASSKEY_CREATE": {827        const payload = msg.payload as Parameters<typeof completeFirefoxPasskeyCreate>[0] | undefined;828        if (!payload) return { ok: false, error: "missing_payload" };829        return await completeFirefoxPasskeyCreate(payload);830      }831832      case "PASSKEY_OFFER_DECLINE": {833        const { domain } = (msg.payload ?? {}) as { domain?: string };834        if (!domain) return { ok: false, error: "domain_required" };835        await recordPasskeyOfferDecline(domain);836        return { ok: true };837      }838839      case "GET_PASSKEY_OFFER_DECLINED": {840        const { domain } = (msg.payload ?? {}) as { domain?: string };841        if (!domain) return { ok: false, error: "domain_required" };842        return { ok: true, data: await isPasskeyOfferDeclined(domain) };843      }844845      case "PASSKEY_HAS_CREDENTIALS": {846        const payload = msg.payload as {847          rpId?: string;848          allowCredentials?: Array<{ id: string; type?: string }>;849        } | undefined;850        if (!payload?.rpId) return { ok: false, error: "rpid_required" };851        return await handlePasskeyHasCredentials({852          rpId: payload.rpId,853          allowCredentials: payload.allowCredentials ?? [],854        });855      }856857      case "PASSKEY_CREATE": {858        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyCreate>[0] | undefined;859        if (!payload?.rpId || !payload?.userName) {860          return { ok: false, error: "rpid_and_username_required" };861        }862        return await handleFirefoxPasskeyCreate(payload);863      }864865      case "PASSKEY_GET": {866        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyGet>[0] | undefined;867        if (!payload?.rpId) return { ok: false, error: "rpid_required" };868        return await handleFirefoxPasskeyGet(payload);869      }870871      case "PASSKEY_AUTH_RESPONSE": {872        const { requestId, approved } = (msg.payload ?? {}) as {873          requestId?: string | number;874          approved?: boolean;875        };876        if (requestId === undefined || requestId === null || typeof approved !== 'boolean') {877          return { ok: false, error: 'requestId and approved required' };878        }879        await resolvePendingPasskeyRequest(Number(requestId), approved);880        return { ok: true };881      }882883      case "GET_PASSKEY_FOR_DOMAIN": {884        const { domain } = (msg.payload ?? {}) as { domain?: string };885        if (!domain) return { ok: false, error: "domain_required" };886        if (!vault.isUnlocked()) return { ok: true, data: null };887        const match = vault888          .getEntries()889          .find((entry) => entry.passkey?.rpId === domain);890        if (!match || !match.passkey) return { ok: true, data: null };891        // Slim shape — only the fields State 11 needs. Never expose private892        // key material, even though this is locked behind isUnlocked.893        return {894          ok: true,895          data: {896            rpId: match.passkey.rpId,897            userName: match.passkey.userName,898            browser: match.passkey.browser,899          },900        };901      }902903      case "DESTROY_VAULT": {904        // Irreversible by design. Lock zeroes the derived key + in-memory entries;905        // storage.local.clear() wipes every Peach key (slots, settings, license,906        // onboarded flag, history, sync state, declined cards, recall, etc.);907        // session.clear() wipes pending passkey requests + pro-notice queues.908        // Caller (Panic.tsx) handles UI navigation back to onboarding.909        vault.lock();910        await storageClear();911        await vault.clearVaultHistory();912        if (chrome.storage.session) {913          await chrome.storage.session.clear();914        }915        return { ok: true };916      }917918      case "SUBMIT_FEEDBACK": {919        const { category, message, version, browser } = msg.payload as {920          category: string;921          message: string;922          version: string;923          browser: string;924        };925        if (!message.trim()) return { ok: false, error: "message_empty" };926        if (!FEEDBACK_ENDPOINT) return { ok: true };927        if (!isAllowedCanaryWebhookUrl(FEEDBACK_ENDPOINT)) {928          return { ok: false, error: "invalid_feedback_endpoint" };929        }930        try {931          const res = await fetch(FEEDBACK_ENDPOINT, {932            method: "POST",933            headers: { "Content-Type": "application/json" },934            body: JSON.stringify({ category, message, version, browser, source: "peach-extension" }),935          });936          return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };937        } catch (err) {938          return { ok: false, error: err instanceof Error ? err.message : "network_error" };939        }940      }941      // Android-only: biometric unlock with pre-derived key.942      case "UNLOCK_WITH_KEY": {943        const { masterKeyHex } = msg.payload as { masterKeyHex: string };944        if (!isNativePlatform()) {945          return { ok: false, error: "desktop_only_uses_password" };946        }947        try {948          const result = await vault.unlockWithKey(masterKeyHex);949          if (result.ok) {950            onVaultUnlocked();951            await publishInMemoryVault(result.entries);952          }953          return { ok: result.ok, data: result.ok ? { entries: result.entries } : undefined, error: result.ok ? undefined : result.error };954        } catch {955          return { ok: false, error: "invalid_key" };956        }957      }958      // Android: returns current in-memory derived key as hex. Used by biometric enable flow.959      case "GET_DERIVED_KEY": {960        if (!isNativePlatform()) {961          return { ok: false, error: "android_only" };962        }963        if (!vault.isUnlocked()) {964          return { ok: false, error: "vault_locked" };965        }966        return { ok: true, data: { masterKeyHex: vault.getDerivedKeyHex() } };967      }968      case "GET_IDENTITY_SUGGESTIONS": {969        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };970        const entries = vault.getEntries();971        const suggestions = buildIdentitySuggestions(entries);972        return { ok: true, data: { suggestions } };973      }974      case "POPULATE_INLINE_VAULT": {975        if (!isNativePlatform()) return { ok: false };976        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };977        const entries = vault.getEntries();978        await publishInMemoryVault(entries);979        return { ok: true };980      }981      case "ML_INIT":982        return { ok: true };983984      case "ML_PREDICT_BATCH": {985        // AUD-002: shape-validate before forwarding to the ML helper.986        const { featuresArray } = (msg.payload ?? {}) as { featuresArray?: unknown };987        if (!Array.isArray(featuresArray)) {988          return { ok: false, error: "invalid_payload" };989        }990        return { ok: true, data: mlPredictBatch(featuresArray as MLFieldFeatures[]) };991      }992993      // ── Chirp Sync (v3) ───────────────────────────────────────────────994      // Returns the public-facing local identity needed by the popup to995      // drive Phase-1 audio pairing. The private long-term key never996      // leaves the background.997      case "CHIRP_GET_LOCAL_IDENTITY": {998        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };999        const proCheck = await requirePro("sync");1000        if (!proCheck.allowed) return { ok: false, error: "pro_required" };1001        const masterKeyHex = vault.getDerivedKeyHex();1002        const masterKey = unhexBytes(masterKeyHex);1003        try {1004          const identity = await buildLocalIdentity(masterKey);1005          return { ok: true, data: identity };1006        } finally {1007          masterKey.fill(0);1008        }1009      }10101011      case "CHIRP_COMPLETE_PAIRING": {1012        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };1013        const proCheck = await requirePro("sync");1014        if (!proCheck.allowed) return { ok: false, error: "pro_required" };1015        const paired = (msg.payload as { paired?: unknown })?.paired;1016        if (typeof paired !== "object" || paired === null) {1017          return { ok: false, error: "invalid_payload" };1018        }1019        const candidate = paired as Record<string, unknown>;1020        if (1021          typeof candidate.deviceId !== "string" || !candidate.deviceId ||1022          typeof candidate.deviceName !== "string" || !candidate.deviceName ||1023          typeof candidate.deviceType !== "string" ||1024          typeof candidate.longTermPublicKeyHex !== "string" ||1025          !/^[0-9a-f]{64}$/.test(candidate.longTermPublicKeyHex) ||1026          typeof candidate.pairedAt !== "number"1027        ) {1028          return { ok: false, error: "invalid_paired_device" };1029        }1030        await upsertPairedDeviceV3(candidate as unknown as import("../shared/sync-types").PairedDevice);1031        return { ok: true };1032      }10331034      case "CHIRP_LIST_PAIRED_DEVICES": {1035        const devices = await listPairedDevicesV3();1036        return { ok: true, data: { devices } };1037      }10381039      case "CHIRP_UNPAIR_DEVICE": {1040        const { deviceId } = (msg.payload ?? {}) as { deviceId?: string };1041        if (typeof deviceId !== "string" || !deviceId) {1042          return { ok: false, error: "invalid_payload" };1043        }1044        await removePairedDeviceByIdV3(deviceId);1045        return { ok: true };1046      }10471048      case "CHIRP_RENAME_LOCAL_DEVICE": {1049        const { name } = (msg.payload ?? {}) as { name?: string };1050        if (typeof name !== "string") return { ok: false, error: "invalid_payload" };1051        await setDeviceNameV3(name);1052        return { ok: true };1053      }10541055      default:1056        return { ok: false, error: "unknown_message_type" };1057    }1058  } catch (err) {1059    return {1060      ok: false,1061      error: err instanceof Error ? err.message : "operation_failed",1062    };1063  }1064}10651066// --- Mobile platform helpers ---10671068// Android: populates the in-memory vault used by PeachAutofillService.1069async function publishInMemoryVault(entries: VaultEntry[]): Promise<void> {1070  const plugin = nativePlugin<{1071    setEntries?: (args: {1072      entries: Array<{1073        id: string;1074        title: string;1075        username: string;1076        email: string;1077        password: string;1078        url: string;1079        totp: string;1080        additionalUrls: string[];1081      }>;1082    }) => Promise<void>;1083  }>("InMemoryVaultPlugin");1084  if (!plugin?.setEntries) return;1085  await plugin.setEntries({1086    entries: entries.map((e) => ({1087      id: e.id,1088      title: e.title ?? "",1089      username: e.username ?? "",1090      email: (e as VaultEntry & { email?: string }).email ?? "",1091      password: e.password ?? "",1092      url: e.url ?? "",1093      totp: (e as VaultEntry & { totp?: string }).totp ?? "",1094      additionalUrls: (e as VaultEntry & { additionalUrls?: string[] }).additionalUrls ?? [],1095    })),1096  });1097}10981099// Android: clear the autofill in-memory store on lock.1100async function clearInMemoryVault(): Promise<void> {1101  const plugin = nativePlugin<{ clearEntries?: () => Promise<void> }>("InMemoryVaultPlugin");1102  if (!plugin?.clearEntries) return;1103  await plugin.clearEntries();1104}11051106// Returns username use-counts from the vault, sorted by frequency. Each row1107// also carries the entry's email so the popup can suggest the email/username1108// pair the user has actually used together.1109function buildIdentitySuggestions(1110  entries: VaultEntry[],1111): Array<{ email: string; username: string; count: number }> {1112  const usernameCounts = new Map<string, number>();1113  const usernameEmail = new Map<string, string>();1114  for (const entry of entries) {1115    const username = entry.username ?? "";1116    const email = (entry as VaultEntry & { email?: string }).email ?? "";1117    if (!username && !email) continue;1118    const key = username || email;1119    usernameCounts.set(key, (usernameCounts.get(key) ?? 0) + 1);1120    if (!usernameEmail.has(key)) usernameEmail.set(key, email);1121  }1122  return Array.from(usernameCounts.entries())1123    .sort((a, b) => b[1] - a[1])1124    .map(([username, count]) => ({1125      email: usernameEmail.get(username) ?? "",1126      username,1127      count,1128    }));1129}11301131/** Notify all content scripts that the vault just became available. */1132function broadcastToContentScripts(message: { type: string }): void {1133  if (!chrome.tabs?.query) return;1134  chrome.tabs.query({}, (tabs) => {1135    for (const tab of tabs) {1136      if (tab.id !== undefined) {1137        chrome.tabs.sendMessage(tab.id, message).catch(() => {1138          // Tab may not have a content script — silently ignore1139        });1140      }1141    }1142  });1143}11441145function shouldRefreshAutoLock(type: MessageType): boolean {1146  return (1147    type !== "HAS_VAULT" &&1148    type !== "IS_UNLOCKED" &&1149    type !== "GET_VAULT_STATUS" &&1150    type !== "LOCK" &&1151    type !== "UPDATE_SETTINGS" &&1152    type !== "GET_PENDING_PASSKEY" &&1153    type !== "GET_PASSKEY_PROVIDER_STATE" &&1154    type !== "DECLINE_CARD_SAVE" &&1155    type !== "IS_CARD_DECLINED" &&1156    type !== "SUBMIT_FEEDBACK"1157  );1158}11591160function isAllowedCanaryWebhookUrl(value: string): boolean {1161  try {1162    const url = new URL(value);1163    if (url.protocol !== "https:") return false;11641165    const hostname = url.hostname.toLowerCase();1166    if (1167      hostname === "localhost" ||1168      hostname.endsWith(".localhost") ||1169      isPrivateIpv4(hostname) ||1170      isPrivateIpv6(hostname)1171    ) {1172      return false;1173    }11741175    return true;1176  } catch {1177    return false;1178  }1179}11801181function isPrivateIpv4(hostname: string): boolean {1182  if (PRIVATE_IPV4_RANGES.some((range) => hostname.startsWith(range.prefix))) {1183    return true;1184  }11851186  const octets = hostname.split(".").map((part) => Number(part));1187  if (octets.length !== 4 || octets.some((octet) => !Number.isInteger(octet) || octet < 0 || octet > 255)) {1188    return false;1189  }11901191  return octets[0] === 172 && octets[1] >= 16 && octets[1] <= 31;1192}11931194function isPrivateIpv6(hostname: string): boolean {1195  const normalized = hostname.replace(/^\[|\]$/g, "").toLowerCase();1196  return (1197    normalized === "::1" ||1198    normalized.startsWith("fc") ||1199    normalized.startsWith("fd") ||1200    normalized.startsWith("fe80:")1201  );1202}