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 * as vault from "./vault";15import {16  activateLicense,17  deactivateLicense,18  getLicenseInfo,19  getLicenseKey,20  isProUser,21  markCelebrationPlayed,22  shouldPlayCelebration,23} from "./license";24import {25  cancelFirefoxPasskeyCreate,26  completeFirefoxPasskeyCreate,27  getPasskeyProviderState,28  getPendingPasskeyRequest,29  handleFirefoxPasskeyCreate,30  handleFirefoxPasskeyGet,31  handlePasskeyHasCredentials,32  initiateFirefoxPasskeyCreate,33  isPasskeyOfferDeclined,34  recordPasskeyOfferDecline,35  resolvePendingPasskeyRequest,36  setPasskeyProviderEnabled,37} from "./passkey";38import { buildAdvancedHealthReport, resolveResetUrl } from "./health";39import { storageClear } from "../shared/storage";40import type {41  Message,42  MessageResponse,43  MessageType,44  ProFeature,45} from "../shared/types";46import { isPasskeyOnly } from "../shared/types";47import type { SyncStatus } from "../shared/sync-types";4849/**50 * The single Pro gate. Every gated handler calls this first; the broadcast51 * lets the popup react (navigate to the License section, highlight the52 * relevant feature). Background never touches the popup view directly —53 * the popup owns navigation. See Projects.md "Pro gate rule".54 */55async function requirePro(56  feature: ProFeature,57  trigger: "user" | "background" = "user"58): Promise<{ allowed: boolean }> {59  if (await isProUser()) return { allowed: true };6061  if (trigger === "user") {62    // User deliberately triggered this feature — redirect the popup immediately.63    chrome.runtime64      .sendMessage({ type: "PRO_GATE_TRIGGERED", payload: { feature } })65      .catch(() => {66        // Popup may be closed — the gate signal is best-effort.67      });68  } else {69    // Background trigger (e.g. passive sync initiation) — no popup is open.70    // Queue a notice so the next popup open shows a soft banner instead of71    // silently failing.72    if (chrome.storage.session) {73      chrome.storage.session74        .set({ pendingProNotice: { feature, triggeredAt: Date.now() } })75        .catch(() => {});76    }77  }7879  return { allowed: false };80}8182// ---------------------------------------------------------------------------83// Local device name. Peers see this string in PAIR_REQUEST / PAIR_ACCEPT and84// next to the device in their paired-devices list. Default to a platform-aware85// fallback when the user hasn't set one explicitly.86const DEVICE_NAME_KEY = "peach_device_name";8788async function getLocalDeviceName(): Promise<string> {89  try {90    const stored = await chrome.storage.local.get(DEVICE_NAME_KEY);91    const value = (stored as Record<string, string | undefined>)[DEVICE_NAME_KEY];92    if (typeof value === "string" && value.trim()) return value.trim();93  } catch {94    // fall through to default95  }96  return "Peach";97}9899// ---------------------------------------------------------------------------100// 6-digit code pairing.101102const PAIRING_TOKEN_TTL_MS = 5 * 60 * 1000;103104105function generateSixDigitToken(): string {106  // crypto.getRandomValues, not Math.random — the token is the only secret107  // protecting the pairing window from a same-LAN attacker. 6 decimal digits108  // is 1 in 1,000,000; combined with a 5-minute TTL and pairing-mode gating109  // on the responder this is the right tradeoff between UX and security.110  const buf = new Uint32Array(1);111  crypto.getRandomValues(buf);112  const value = buf[0] % 1_000_000;113  return value.toString().padStart(6, "0");114}115116// ---------------------------------------------------------------------------117// Peer discovery glue (Phase 7 popup pairing flow).118119const PRIVATE_IPV4_RANGES = [120  { prefix: "10." },121  { prefix: "127." },122  { prefix: "169.254." },123  { prefix: "192.168." },124];125126// Empty disables network submission while the UI continues to function as a127// no-op (the handler returns ok:true without calling fetch). When set, the128// URL is validated by `isAllowedCanaryWebhookUrl` before any request, so the129// same private-IP/HTTPS rules that gate canary webhooks apply here.130const FEEDBACK_ENDPOINT = "";131132export function setupMessageHandler(): void {133  chrome.runtime.onMessage.addListener(134    (msg: unknown, sender, sendResponse) => {135      if (!isMessage(msg)) {136        sendResponse({ ok: false, error: "invalid message" });137        return true;138      }139      handleMessage(msg, sender)140        .then(sendResponse)141        .catch((err) =>142          sendResponse({143            ok: false,144            error: err instanceof Error ? err.message : String(err),145          })146        );147      return true;148    }149  );150}151152function isMessage(m: unknown): m is Message {153  return typeof m === "object" && m !== null && "type" in m;154}155156export async function handleMessage(157  msg: Message,158  sender: Partial<chrome.runtime.MessageSender> = {}159): Promise<MessageResponse> {160  try {161    // Validate sender — only allow messages from our extension pages/scripts.162    // `sender.id` is undefined for messages originating from extension UI163    // (popup/options), which is legitimate; reject only when it is defined164    // and does not match our extension id.165    if (166      sender.id !== undefined &&167      sender.id !== chrome.runtime.id168    ) {169      return { ok: false, error: "invalid sender" };170    }171172    if (shouldRefreshAutoLock(msg.type) && vault.isUnlocked()) {173      touchAutoLock();174    }175176    switch (msg.type) {177      case "CREATE_VAULT": {178        const { password } = msg.payload as { password: string };179        await vault.createVault(password);180        await setupAutoLock();181        broadcastToContentScripts({ type: "VAULT_UNLOCKED" });182        return { ok: true };183      }184      case "UNLOCK": {185        const { password } = msg.payload as { password: string };186        const ok = await vault.unlock(password);187        if (ok) {188          await setupAutoLock();189          broadcastToContentScripts({ type: "VAULT_UNLOCKED" });190        }191        return { ok };192      }193      case "LOCK":194        vault.lock();195        return { ok: true };196      case "IS_UNLOCKED":197        return { ok: true, data: vault.isUnlocked() };198      case "GET_VAULT_STATUS":199        return { ok: true, unlocked: vault.isUnlocked() };200      case "HAS_VAULT":201        return { ok: true, data: await vault.hasVault() };202      case "GET_ENTRIES":203        return { ok: true, data: vault.getEntries() };204      case "ADD_ENTRY": {205        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };206        const entry = await vault.addEntry(msg.payload as any);207        return { ok: true, data: entry };208      }209      case "BATCH_ADD_ENTRIES": {210        const { entries } = msg.payload as { entries: any[] };211        const added = await vault.batchAddEntries(entries);212        return { ok: true, data: added };213      }214      case "RESTORE_ENTRIES": {215        const { entries, mode, settings } = msg.payload as {216          entries: any[];217          mode: "replace" | "merge";218          settings?: vault.VaultSettings;219        };220        const summary = await vault.restoreEntries(entries, mode);221        if (settings && typeof settings === "object") {222          await vault.updateSettings(settings);223        }224        return { ok: true, data: summary };225      }226      case "CLEAR_VAULT_ENTRIES": {227        await vault.clearVaultEntries("REPLACE_ALL");228        return { ok: true };229      }230      case "GET_VAULT_HISTORY": {231        const snapshots = await vault.getVaultHistory();232        return { ok: true, data: snapshots };233      }234      case "RESTORE_VAULT_SNAPSHOT": {235        const { snapshotId } = msg.payload as { snapshotId: string };236        const result = await vault.restoreVaultSnapshot(snapshotId);237        if (!result.ok) return { ok: false, error: result.error };238        broadcastToContentScripts({ type: "VAULT_LOCKED" });239        return { ok: true };240      }241      case "COUNT_DUPLICATES": {242        return { ok: true, data: vault.countDuplicates() };243      }244      case "DEDUPLICATE_ENTRIES": {245        const removed = await vault.deduplicateEntries();246        return { ok: true, data: removed };247      }248      case "UPDATE_ENTRY": {249        const { id, patch } = msg.payload as any;250        await vault.updateEntry(id, patch);251        return { ok: true };252      }253      case "ADD_ADDITIONAL_URL": {254        const { id, url } = msg.payload as { id: string; url: string };255        const trimmed = typeof url === "string" ? url.trim() : "";256        if (!trimmed) return { ok: false, error: "url required" };257        const existing = vault.getEntryById(id);258        if (!existing) return { ok: false, error: "entry not found" };259        if (existing.type !== "login") return { ok: false, error: "login entries only" };260        const merged = [...(existing.additionalUrls ?? []), trimmed];261        await vault.updateEntry(id, { additionalUrls: merged });262        return { ok: true };263      }264      case "DELETE_ENTRY": {265        const { id } = msg.payload as { id: string };266        await vault.deleteEntry(id);267        return { ok: true };268      }269      case "GET_DELETED_ENTRIES":270        return { ok: true, data: vault.getDeletedEntries() };271      case "RESTORE_ENTRY": {272        const { id } = msg.payload as { id: string };273        await vault.restoreEntry(id);274        return { ok: true };275      }276      case "PURGE_ENTRY": {277        const { id } = msg.payload as { id: string };278        await vault.purgeEntry(id);279        return { ok: true };280      }281      case "PURGE_EXPIRED_TRASH": {282        const { retentionMs } = msg.payload as { retentionMs: number };283        const purged = await vault.purgeExpiredTrash(retentionMs);284        return { ok: true, data: purged };285      }286      case "AUTOFILL_QUERY": {287        if (!vault.isUnlocked()) {288          return { ok: false, error: "VAULT_LOCKED" };289        }290        const { domain, includeAll, kind } = msg.payload as {291          domain: string;292          includeAll?: boolean;293          kind?: "login" | "card";294        };295        // kind="card": return saved cards as compact summaries for the296        // inline card silver platter. Cards are not domain-scoped — every297        // saved card is a candidate on every checkout page — so domain is298        // ignored when kind === "card".299        if (kind === "card") {300          const cards = vault.getEntries().filter((e) => e.type === "card");301          return {302            ok: true,303            data: cards.map((e) => ({304              id: e.id,305              title: e.cardNickname || e.title,306              cardholderName: e.cardholderName,307              last4: e.last4,308              expMonth: e.expMonth,309              expYear: e.expYear,310              network: e.network,311            })),312          };313        }314        // The inline selector fills username+password into a form. Passkey-315        // only entries have no password to fill; sign-in for those goes316        // through the WebAuthn path instead. Filter them out everywhere so317        // the user doesn't see four "GitHub" rows that mostly do nothing.318        // Notes and cards never belonged here either.319        const matches = (320          includeAll321            ? vault322                .getEntries()323                .filter((entry) => entry.type !== "note" && entry.type !== "card")324            : vault.queryDomain(domain)325        ).filter((entry) => !isPasskeyOnly(entry));326        return {327          ok: true,328          data: matches.map((e) =>329            includeAll330              ? {331                  id: e.id,332                  title: e.title,333                  hasPasskey: e.passkey !== undefined,334                }335              : {336                  id: e.id,337                  title: e.title,338                  username: e.username,339                  url: e.url,340                  hasTotp: Boolean(e.totp),341                  hasPasskey: e.passkey !== undefined,342                }343          ),344        };345      }346      case "GET_ENTRY_FOR_FILL": {347        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };348        const { id } = msg.payload as { id: string };349        const entry = vault.getEntryById(id);350        if (!entry) return { ok: false, error: "entry not found" };351        // Passkey-only entries (passkey credential, no password) cannot be352        // filled into a form — sign-in goes through the WebAuthn path. A353        // login that ALSO has a passkey is still fillable for its password.354        if (isPasskeyOnly(entry)) return { ok: false, error: "passkey not fillable" };355        // Strip the passkey credential from the response — content scripts356        // never need the private key, and there's no reason to expose the357        // public credential metadata over the boundary either.358        const { passkey: _strippedPasskey, ...safeEntry } = entry;359        return { ok: true, data: safeEntry };360      }361      case "COPY": {362        const { text, label, alreadyWritten } = msg.payload as {363          text: string;364          label: string;365          alreadyWritten?: boolean;366        };367        await copyToClipboard(text, label, Boolean(alreadyWritten));368        return { ok: true };369      }370      case "CHECK_BREACH": {371        const { password } = msg.payload as { password: string };372        const count = await vault.checkBreach(password);373        return { ok: true, data: count };374      }375      case "CHECK_ALL_BREACHES": {376        const allEntries = vault.getEntries();377        const results: Record<string, number> = {};378        for (const entry of allEntries) {379          if (entry.type === "note") continue;380          if (!entry.password) continue;381          results[entry.id] = await vault.checkBreach(entry.password);382          // Small delay — be a good citizen to the HIBP API383          await new Promise((r) => setTimeout(r, 200));384        }385        // Persist any non-zero counts back to entries386        for (const [id, count] of Object.entries(results)) {387          const entry = vault.getEntryById(id);388          if (entry && (entry.breach ?? 0) !== count) {389            await vault.updateEntry(id, { breach: count > 0 ? count : undefined });390          }391        }392        return { ok: true, data: results };393      }394      case "GET_SETTINGS":395        return { ok: true, data: await vault.ensureSettingsLoaded() };396      case "UPDATE_SETTINGS": {397        const patch = msg.payload as Record<string, unknown>;398        await vault.updateSettings(patch as any);399        if (typeof patch.autoLockMinutes === "number") {400          await setupAutoLock();401          if (vault.isUnlocked()) touchAutoLock();402        }403        return { ok: true };404      }405      case "GET_PENDING_PASSKEY":406        return { ok: true, data: await getPendingPasskeyRequest() };407      case "APPROVE_PASSKEY": {408        const { requestId } = msg.payload as { requestId: number };409        await resolvePendingPasskeyRequest(requestId, true);410        return { ok: true };411      }412      case "DENY_PASSKEY": {413        const { requestId } = msg.payload as { requestId: number };414        await resolvePendingPasskeyRequest(requestId, false);415        return { ok: true };416      }417      case "GET_PASSKEYS":418        return {419          ok: true,420          data: vault.getEntries().filter((entry) => entry.passkey !== undefined),421        };422      case "DELETE_PASSKEY": {423        const { id } = msg.payload as { id: string };424        await vault.deleteEntry(id);425        return { ok: true };426      }427      case "GET_PASSKEY_PROVIDER_STATE":428        return { ok: true, data: await getPasskeyProviderState() };429      case "SET_PASSKEY_PROVIDER_ENABLED": {430        const { enabled } = msg.payload as { enabled: boolean };431        // Disabling is always free; gating fires only when a free user is432        // trying to turn passkey interception on.433        if (enabled) {434          const gate = await requirePro("passkeys");435          if (!gate.allowed) return { ok: false, error: "pro_required" };436        }437        return { ok: true, data: await setPasskeyProviderEnabled(enabled) };438      }439      case "FIRE_CANARY_PING": {440        const { webhookUrl, entryTitle, trigger } = msg.payload as {441          webhookUrl: string;442          entryTitle: string;443          trigger: "password_copied" | "username_copied" | "autofilled" | "submitted" | "test";444        };445        if (!isAllowedCanaryWebhookUrl(webhookUrl)) {446          return { ok: false, error: "invalid webhook url" };447        }448        const body = JSON.stringify({449          event: trigger === "test" ? "peach_canary_test" : "peach_canary_accessed",450          entry: entryTitle,451          trigger,452          timestamp: new Date().toISOString(),453          source: "peach-extension",454        });455        if (trigger === "test") {456          // Permitted outbound fetch: user-configured canary alert endpoint457          // (validated by isAllowedCanaryWebhookUrl above). This is the458          // only non-HIBP outbound call in the extension — see459          // Projects.md §3.7. Test pings are awaited so the UI can show460          // success/failure.461          try {462            const res = await fetch(webhookUrl, {463              method: "POST",464              headers: { "Content-Type": "application/json" },465              body,466            });467            return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };468          } catch (err) {469            return { ok: false, error: err instanceof Error ? err.message : "network error" };470          }471        }472        // Non-test triggers are fire-and-forget473        fetch(webhookUrl, {474          method: "POST",475          headers: { "Content-Type": "application/json" },476          body,477        }).catch(() => {});478        return { ok: true };479      }480      case "ACTIVATE_LICENSE": {481        const { key } = msg.payload as { key: string };482        const licenseInfo = await activateLicense(key);483        return { ok: true, data: licenseInfo };484      }485      case "GET_LICENSE": {486        const licenseInfo = await getLicenseInfo();487        return { ok: true, data: licenseInfo };488      }489      case "GET_LICENSE_KEY": {490        const key = await getLicenseKey();491        return { ok: true, data: key };492      }493      case "DEACTIVATE_LICENSE": {494        await deactivateLicense();495        return { ok: true };496      }497      case "SHOULD_PLAY_CELEBRATION": {498        const should = await shouldPlayCelebration();499        return { ok: true, data: should };500      }501      case "MARK_CELEBRATION_PLAYED": {502        await markCelebrationPlayed();503        return { ok: true };504      }505      case "OPEN_PRO_GATE": {506        // Content script requests: open popup and navigate to License section.507        const { feature } = (msg.payload ?? {}) as { feature?: string };508        if (chrome.storage.session) {509          await chrome.storage.session.set({ pendingProGate: { feature: feature ?? "passkeys" } });510        }511        try { await chrome.action.openPopup(); } catch { /* badge fallback */ }512        return { ok: true };513      }514      case "GET_IDENTITIES": {515        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };516        return { ok: true, data: vault.getIdentities() };517      }518      case "GET_ADVANCED_HEALTH_REPORT": {519        const gate = await requirePro("advanced_health");520        if (!gate.allowed) return { ok: false, error: "pro_required" };521        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };522        const report = await buildAdvancedHealthReport(vault.getEntries());523        return { ok: true, data: report };524      }525      case "INITIATE_PASSWORD_CHANGE": {526        const gate = await requirePro("smart_password_change");527        if (!gate.allowed) return { ok: false, error: "pro_required" };528        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };529        const { id } = msg.payload as { id: string };530        const entry = vault.getEntryById(id);531        if (!entry) return { ok: false, error: "entry not found" };532        const url = resolveResetUrl(entry);533        if (!url) return { ok: false, error: "no reset url" };534        try {535          await chrome.tabs.create({ url });536          return { ok: true, data: { url } };537        } catch (err) {538          return {539            ok: false,540            error: err instanceof Error ? err.message : "failed to open tab",541          };542        }543      }544      case "IS_DURESS_ENABLED": {545        const enabled = await vault.isDuressEnabled();546        return { ok: true, data: enabled };547      }548      case "SETUP_DURESS": {549        const { duressPassword } = msg.payload as { duressPassword: string };550        await vault.setupDuress(duressPassword);551        return { ok: true };552      }553      case "DISABLE_DURESS": {554        await vault.disableDuress();555        return { ok: true };556      }557      case "VERIFY_MAIN_PASSWORD": {558        const { password } = msg.payload as { password: string };559        const ok = await vault.verifyMainPassword(password);560        return { ok: true, data: ok };561      }562      case "CHANGE_PASSWORD": {563        const { currentPassword, newPassword } = msg.payload as {564          currentPassword: string;565          newPassword: string;566        };567        const changed = await vault.changePassword(currentPassword, newPassword);568        return changed569          ? { ok: true }570          : { ok: false, error: "incorrect current password" };571      }572      case "GET_SITE_PASSWORD_POLICY": {573        const [tab] = await chrome.tabs.query({ active: true, currentWindow: true });574        if (!tab?.id) return { ok: true, data: null };575        try {576          const response = await chrome.tabs.sendMessage(tab.id, {577            type: "GET_SITE_PASSWORD_POLICY",578          });579          return (response as MessageResponse) ?? { ok: true, data: null };580        } catch {581          return { ok: true, data: null };582        }583      }584      case "GET_SYNC_STATE": {585        const { getPairedDevices, getTrustedNetworks } = await import('./sync-storage');586        const { isOnTailscale } = await import('./sync-network');587        const { isProUser } = await import('./license');588        const { storageGet } = await import('../shared/storage');589        const pairedDevices = await getPairedDevices();590        const trustedNetworks = await getTrustedNetworks();591        const tailscale = await isOnTailscale();592        const pro = await isProUser();593594        let status: SyncStatus = "offline";595        if (tailscale || trustedNetworks.some((n: { isTailscale?: boolean }) => !n.isTailscale)) {596          if (pairedDevices.length === 0) {597            status = "no_peers";598          } else {599            status = "synced";600          }601        } else {602          status = "not_trusted";603        }604605        const lastSyncRaw = await storageGet("peach_last_sync_at");606        const lastSyncParsed = lastSyncRaw ? Number.parseInt(lastSyncRaw, 10) : NaN;607        const lastSyncAt = Number.isFinite(lastSyncParsed) ? lastSyncParsed : undefined;608609        return { ok: true, data: { pairedDevices, trustedNetworks, status, lastSyncAt, isPro: pro } };610      }611      case "TRIGGER_SYNC": {612        const gate = await requirePro("sync");613        if (!gate.allowed) return { ok: false, error: "pro_required" };614        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };615        return { ok: false, error: "no_native_host" };616      }617      case "START_PAIRING": {618        const gate = await requirePro("sync");619        if (!gate.allowed) return { ok: false, error: "pro_required" };620        return { ok: true };621      }622      case "CANCEL_PAIRING": {623        return { ok: true };624      }625      case "ACCEPT_PAIRING": {626        const gate = await requirePro("sync");627        if (!gate.allowed) return { ok: false, error: "pro_required" };628        return { ok: true };629      }630      case "REMOVE_PAIRED_DEVICE": {631        const { deviceId } = msg.payload as { deviceId: string };632        const { removePairedDevice } = await import('./sync-storage');633        await removePairedDevice(deviceId);634        return { ok: true };635      }636      case "REMOVE_TRUSTED_NETWORK": {637        const { ssid, bssid, isTailscale } = msg.payload as any;638        const { removeTrustedNetwork, getTrustedNetworks } = await import('./sync-storage');639        const networks = await getTrustedNetworks();640        const network = networks.find((n: { ssid?: string; bssid?: string; isTailscale?: boolean }) => 641          (isTailscale ? n.isTailscale : n.ssid === ssid) && 642          (!bssid || n.bssid === bssid)643        );644        if (network) {645          await removeTrustedNetwork(network.addedAt);646        }647        return { ok: true };648      }649      case "MARK_NETWORK_TRUSTED": {650        const { addTrustedNetwork } = await import('./sync-storage');651        const { getCurrentNetwork } = await import('./sync-network');652        const network = await getCurrentNetwork();653        await addTrustedNetwork({654          ssid: network.ssid,655          bssid: network.bssid,656          isTailscale: network.isTailscale,657          addedAt: Date.now(),658        });659        return { ok: true };660      }661      case "GET_INCOMING_PAIRING_REQUEST": {662        const { getIncomingPairingRequest } = await import('./sync-storage');663        const request = await getIncomingPairingRequest();664        return { ok: true, data: request };665      }666      case "RESPOND_INCOMING_PAIRING": {667        const { accept } = msg.payload as { accept: boolean };668        const { getIncomingPairingRequest, clearIncomingPairingRequest, addPairedDevice } =669          await import('./sync-storage');670        const request = await getIncomingPairingRequest();671        if (!request) return { ok: false, error: "no_pending_request" };672        if (Date.now() > request.expiresAt) {673          await clearIncomingPairingRequest();674          return { ok: false, error: "expired" };675        }676        await clearIncomingPairingRequest();677        if (accept) {678          await addPairedDevice({679            deviceId: request.publicKeyHex,680            displayName: request.deviceName,681            x25519PublicKey: request.publicKeyHex,682            pairedAt: Date.now(),683            lastSeenAt: Date.now(),684          });685        }686        return { ok: true, data: { accepted: accept, deviceName: request.deviceName } };687      }688      case "START_PEER_DISCOVERY": {689        const gate = await requirePro("sync");690        if (!gate.allowed) return { ok: false, error: "pro_required" };691        return { ok: false, error: "no_native_host" };692      }693      case "STOP_PEER_DISCOVERY": {694        return { ok: true };695      }696      case "START_PAIRING_SERVER": {697        const gate = await requirePro("sync");698        if (!gate.allowed) return { ok: false, error: "pro_required" };699        const token = generateSixDigitToken();700        const expiresAt = Date.now() + PAIRING_TOKEN_TTL_MS;701        const { setActivePairingToken } = await import('./pairing-server-state');702        await setActivePairingToken({ token, expiresAt });703        return { ok: true, data: { token, expiresAt } };704      }705      case "STOP_PAIRING_SERVER": {706        try {707          const { setActivePairingToken } = await import("./pairing-server-state");708          await setActivePairingToken(null);709        } catch { /* best-effort */ }710        return { ok: true };711      }712      case "CONNECT_WITH_CODE": {713        const gate = await requirePro("sync");714        if (!gate.allowed) return { ok: false, error: "pro_required" };715        return { ok: false, error: "no_native_host" };716      }717      case "GET_RECENT_PAIRING": {718        const { consumeRecentPairing } = await import('./pairing-server-state');719        const recent = await consumeRecentPairing();720        return { ok: true, data: recent };721      }722      case "INITIATE_PAIR_WITH_PEER": {723        const gate = await requirePro("sync");724        if (!gate.allowed) return { ok: false, error: "pro_required" };725        return { ok: false, error: "no_native_host" };726      }727      case "DEBUG_INJECT_INCOMING_PAIRING": {728        // Manual E2E rehearsal hook. Inserts a synthetic incoming pairing729        // request into session storage so Phase 7 banner UX can be exercised730        // without a live native host. No Pro gate — this is a no-op in731        // production unless explicitly invoked from a Settings debug action.732        const { deviceName, publicKeyHex } = (msg.payload ?? {}) as {733          deviceName?: string;734          publicKeyHex?: string;735        };736        if (!deviceName || !publicKeyHex) {737          return { ok: false, error: "missing_payload" };738        }739        const { setIncomingPairingRequest } = await import('./sync-storage');740        const now = Date.now();741        await setIncomingPairingRequest({742          deviceName,743          publicKeyHex,744          receivedAt: now,745          expiresAt: now + 60_000,746        });747        return { ok: true };748      }749      case "RESET_SYNC_IDENTITY": {750        const gate = await requirePro("sync");751        if (!gate.allowed) return { ok: false, error: "pro_required" };752        const { getPairedDevices, removePairedDevice } = await import('./sync-storage');753        const devices = await getPairedDevices();754        for (const device of devices) {755          await removePairedDevice(device.deviceId);756        }757        return { ok: true, data: { removedDevices: devices.length, nativePublicKey: null } };758      }759      case "RECORD_MANUAL_SUMMON": {760        const { domain } = msg.payload as { domain: string };761        const settings = vault.getSettings();762        const existing = settings.manualSummonDomains?.[domain];763        const now = Date.now();764        await vault.updateSettings({765          manualSummonDomains: {766            ...settings.manualSummonDomains,767            [domain]: {768              firstSummonedAt: existing?.firstSummonedAt ?? now,769              summonCount: (existing?.summonCount ?? 0) + 1,770              lastSummonedAt: now,771            },772          },773        });774        return { ok: true };775      }776      case "DECLINE_CARD_SAVE": {777        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };778        await vault.declineCardSaveOffer(last4, expMonth, expYear);779        return { ok: true };780      }781      case "IS_CARD_DECLINED": {782        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };783        const declined = await vault.isCardDeclined(last4, expMonth, expYear);784        return { ok: true, data: declined };785      }786      case "INITIATE_FIREFOX_PASSKEY_CREATE": {787        const { rpId, rpName, userName, userDisplayName } = (msg.payload ?? {}) as {788          rpId?: string;789          rpName?: string;790          userName?: string;791          userDisplayName?: string;792        };793        if (!rpId || !userName) return { ok: false, error: "rpId and userName required" };794        return await initiateFirefoxPasskeyCreate({795          rpId,796          rpName: rpName ?? rpId,797          userName,798          userDisplayName,799        });800      }801802      case "COMPLETE_FIREFOX_PASSKEY_CREATE": {803        const payload = msg.payload as Parameters<typeof completeFirefoxPasskeyCreate>[0] | undefined;804        if (!payload) return { ok: false, error: "missing payload" };805        return await completeFirefoxPasskeyCreate(payload);806      }807808      case "PASSKEY_OFFER_DECLINE": {809        const { domain } = (msg.payload ?? {}) as { domain?: string };810        if (!domain) return { ok: false, error: "domain required" };811        await recordPasskeyOfferDecline(domain);812        return { ok: true };813      }814815      case "GET_PASSKEY_OFFER_DECLINED": {816        const { domain } = (msg.payload ?? {}) as { domain?: string };817        if (!domain) return { ok: false, error: "domain required" };818        return { ok: true, data: await isPasskeyOfferDeclined(domain) };819      }820821      case "PASSKEY_HAS_CREDENTIALS": {822        const payload = msg.payload as {823          rpId?: string;824          allowCredentials?: Array<{ id: string; type?: string }>;825        } | undefined;826        if (!payload?.rpId) return { ok: false, error: "rpId required" };827        return await handlePasskeyHasCredentials({828          rpId: payload.rpId,829          allowCredentials: payload.allowCredentials ?? [],830        });831      }832833      case "PASSKEY_CREATE": {834        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyCreate>[0] | undefined;835        if (!payload?.rpId || !payload?.userName) {836          return { ok: false, error: "rpId and userName required" };837        }838        return await handleFirefoxPasskeyCreate(payload);839      }840841      case "PASSKEY_GET": {842        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyGet>[0] | undefined;843        if (!payload?.rpId) return { ok: false, error: "rpId required" };844        return await handleFirefoxPasskeyGet(payload);845      }846847      case "GET_PASSKEY_FOR_DOMAIN": {848        const { domain } = (msg.payload ?? {}) as { domain?: string };849        if (!domain) return { ok: false, error: "domain required" };850        if (!vault.isUnlocked()) return { ok: true, data: null };851        const match = vault852          .getEntries()853          .find((entry) => entry.passkey?.rpId === domain);854        if (!match || !match.passkey) return { ok: true, data: null };855        // Slim shape — only the fields State 11 needs. Never expose private856        // key material, even though this is locked behind isUnlocked.857        return {858          ok: true,859          data: {860            rpId: match.passkey.rpId,861            userName: match.passkey.userName,862            browser: match.passkey.browser,863          },864        };865      }866867      case "DESTROY_VAULT": {868        // Irreversible by design. Lock zeroes the derived key + in-memory entries;869        // storage.local.clear() wipes every Peach key (slots, settings, license,870        // onboarded flag, history, sync state, declined cards, recall, etc.);871        // session.clear() wipes pending passkey requests + pro-notice queues.872        // Caller (Panic.tsx) handles UI navigation back to onboarding.873        vault.lock();874        await storageClear();875        await vault.clearVaultHistory();876        if (chrome.storage.session) {877          await chrome.storage.session.clear();878        }879        return { ok: true };880      }881882      case "SUBMIT_FEEDBACK": {883        const { category, message, version, browser } = msg.payload as {884          category: string;885          message: string;886          version: string;887          browser: string;888        };889        if (!message.trim()) return { ok: false, error: "message is empty" };890        if (!FEEDBACK_ENDPOINT) return { ok: true };891        if (!isAllowedCanaryWebhookUrl(FEEDBACK_ENDPOINT)) {892          return { ok: false, error: "invalid feedback endpoint" };893        }894        try {895          const res = await fetch(FEEDBACK_ENDPOINT, {896            method: "POST",897            headers: { "Content-Type": "application/json" },898            body: JSON.stringify({ category, message, version, browser, source: "peach-extension" }),899          });900          return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };901        } catch (err) {902          return { ok: false, error: err instanceof Error ? err.message : "network error" };903        }904      }905      default:906        return { ok: false, error: "unknown message type" };907    }908  } catch (err) {909    return {910      ok: false,911      error: err instanceof Error ? err.message : "operation failed",912    };913  }914}915916/** Notify all content scripts that the vault just became available. */917function broadcastToContentScripts(message: { type: string }): void {918  if (!chrome.tabs?.query) return;919  chrome.tabs.query({}, (tabs) => {920    for (const tab of tabs) {921      if (tab.id !== undefined) {922        chrome.tabs.sendMessage(tab.id, message).catch(() => {923          // Tab may not have a content script — silently ignore924        });925      }926    }927  });928}929930function shouldRefreshAutoLock(type: MessageType): boolean {931  return (932    type !== "HAS_VAULT" &&933    type !== "IS_UNLOCKED" &&934    type !== "GET_VAULT_STATUS" &&935    type !== "LOCK" &&936    type !== "UPDATE_SETTINGS" &&937    type !== "GET_PENDING_PASSKEY" &&938    type !== "GET_PASSKEY_PROVIDER_STATE" &&939    type !== "DECLINE_CARD_SAVE" &&940    type !== "IS_CARD_DECLINED" &&941    type !== "SUBMIT_FEEDBACK"942  );943}944945function isAllowedCanaryWebhookUrl(value: string): boolean {946  try {947    const url = new URL(value);948    if (url.protocol !== "https:") return false;949950    const hostname = url.hostname.toLowerCase();951    if (952      hostname === "localhost" ||953      hostname.endsWith(".localhost") ||954      isPrivateIpv4(hostname) ||955      isPrivateIpv6(hostname)956    ) {957      return false;958    }959960    return true;961  } catch {962    return false;963  }964}965966function isPrivateIpv4(hostname: string): boolean {967  if (PRIVATE_IPV4_RANGES.some((range) => hostname.startsWith(range.prefix))) {968    return true;969  }970971  const octets = hostname.split(".").map((part) => Number(part));972  if (octets.length !== 4 || octets.some((octet) => !Number.isInteger(octet) || octet < 0 || octet > 255)) {973    return false;974  }975976  return octets[0] === 172 && octets[1] >= 16 && octets[1] <= 31;977}978979function isPrivateIpv6(hostname: string): boolean {980  const normalized = hostname.replace(/^\[|\]$/g, "").toLowerCase();981  return (982    normalized === "::1" ||983    normalized.startsWith("fc") ||984    normalized.startsWith("fd") ||985    normalized.startsWith("fe80:")986  );987}