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 { Capacitor } from "@capacitor/core";40import { storageClear } from "../shared/storage";41import type {42  Message,43  MessageResponse,44  MessageType,45  ProFeature,46} from "../shared/types";47import { isPasskeyOnly } from "../shared/types";48import type { SyncStatus } from "../shared/sync-types";4950/**51 * The single Pro gate. Every gated handler calls this first; the broadcast52 * lets the popup react (navigate to the License section, highlight the53 * relevant feature). Background never touches the popup view directly —54 * the popup owns navigation. See Projects.md "Pro gate rule".55 */56async function requirePro(57  feature: ProFeature,58  trigger: "user" | "background" = "user"59): Promise<{ allowed: boolean }> {60  if (await isProUser()) return { allowed: true };6162  if (trigger === "user") {63    // User deliberately triggered this feature — redirect the popup immediately.64    if (!Capacitor.isNativePlatform()) {65      chrome.runtime66        .sendMessage({ type: "PRO_GATE_TRIGGERED", payload: { feature } })67        .catch(() => {68          // Popup may be closed — the gate signal is best-effort.69        });70    }71  } else {72    // Background trigger (e.g. passive sync initiation) — no popup is open.73    // Queue a notice so the next popup open shows a soft banner instead of74    // silently failing.75    if (!Capacitor.isNativePlatform() && chrome.storage.session) {76      chrome.storage.session77        .set({ pendingProNotice: { feature, triggeredAt: Date.now() } })78        .catch(() => {});79    }80  }8182  return { allowed: false };83}8485// ---------------------------------------------------------------------------86// Peer discovery glue (Phase 7 popup pairing flow).87//88// The popup opens discovery via START_PEER_DISCOVERY. We connect to the89// native sync host, subscribe once, and re-broadcast every PEER_DISCOVERED /90// PEER_LOST event to the popup as a SYNC_PEER_DISCOVERED / SYNC_PEER_LOST91// runtime message. The popup is the only consumer; if it closes, STOP is92// sent on cleanup which tears down subscriptions and the native discovery.93// ---------------------------------------------------------------------------9495let peerDiscoverySubscriptions: Array<() => void> = [];9697async function startPeerDiscoveryForPopup(): Promise<void> {98  await stopPeerDiscoveryForPopup();99  const sync = await import('./sync');100  const { getPairedDevices } = await import('./sync-storage');101  sync.connectSyncHost();102103  const unsubDiscovered = sync.onPeerDiscovered((peer) => {104    void (async () => {105      const paired = await getPairedDevices();106      const alreadyPaired = paired.some((d) => d.deviceId === peer.deviceId);107      if (Capacitor.isNativePlatform()) return;108      chrome.runtime109        .sendMessage({110          type: "SYNC_PEER_DISCOVERED",111          peer: {112            deviceId: peer.deviceId,113            deviceName: peer.name,114            host: peer.host,115            port: peer.port,116            wsPort: peer.wsPort,117            x25519PublicKey: peer.x25519PublicKey,118            alreadyPaired,119          },120        })121        .catch(() => {});122    })();123  });124  const unsubLost = sync.onPeerLost((deviceId) => {125    if (Capacitor.isNativePlatform()) return;126    chrome.runtime127      .sendMessage({ type: "SYNC_PEER_LOST", deviceId })128      .catch(() => {});129  });130  peerDiscoverySubscriptions = [unsubDiscovered, unsubLost];131  sync.discoverPeers();132}133134async function stopPeerDiscoveryForPopup(): Promise<void> {135  for (const unsub of peerDiscoverySubscriptions) unsub();136  peerDiscoverySubscriptions = [];137  try {138    const sync = await import('./sync');139    if (sync.isHostConnected()) {140      await sync.stopDiscovery();141    }142  } catch {143    // best-effort144  }145}146147const PRIVATE_IPV4_RANGES = [148  { prefix: "10." },149  { prefix: "127." },150  { prefix: "169.254." },151  { prefix: "192.168." },152];153154// Empty disables network submission while the UI continues to function as a155// no-op (the handler returns ok:true without calling fetch). When set, the156// URL is validated by `isAllowedCanaryWebhookUrl` before any request, so the157// same private-IP/HTTPS rules that gate canary webhooks apply here.158const FEEDBACK_ENDPOINT = "";159160export function setupMessageHandler(): void {161  chrome.runtime.onMessage.addListener(162    (msg: unknown, sender, sendResponse) => {163      if (!isMessage(msg)) {164        sendResponse({ ok: false, error: "invalid message" });165        return true;166      }167      handleMessage(msg, sender)168        .then(sendResponse)169        .catch((err) =>170          sendResponse({171            ok: false,172            error: err instanceof Error ? err.message : String(err),173          })174        );175      return true;176    }177  );178}179180function isMessage(m: unknown): m is Message {181  return typeof m === "object" && m !== null && "type" in m;182}183184export async function handleMessage(185  msg: Message,186  sender: Partial<chrome.runtime.MessageSender> = {}187): Promise<MessageResponse> {188  try {189    // Validate sender — only allow messages from our extension pages/scripts.190    // `sender.id` is undefined for messages originating from extension UI191    // (popup/options), which is legitimate; reject only when it is defined192    // and does not match our extension id.193    if (194      !Capacitor.isNativePlatform() &&195      sender.id !== undefined &&196      sender.id !== chrome.runtime.id197    ) {198      return { ok: false, error: "invalid sender" };199    }200201    if (shouldRefreshAutoLock(msg.type) && vault.isUnlocked()) {202      touchAutoLock();203    }204205    switch (msg.type) {206      case "CREATE_VAULT": {207        const { password } = msg.payload as { password: string };208        await vault.createVault(password);209        await setupAutoLock();210        broadcastToContentScripts({ type: "VAULT_UNLOCKED" });211        return { ok: true };212      }213      case "UNLOCK": {214        const { password } = msg.payload as { password: string };215        const ok = await vault.unlock(password);216        if (ok) {217          await setupAutoLock();218          broadcastToContentScripts({ type: "VAULT_UNLOCKED" });219        }220        return { ok };221      }222      case "LOCK":223        vault.lock();224        return { ok: true };225      case "IS_UNLOCKED":226        return { ok: true, data: vault.isUnlocked() };227      case "GET_VAULT_STATUS":228        return { ok: true, unlocked: vault.isUnlocked() };229      case "HAS_VAULT":230        return { ok: true, data: await vault.hasVault() };231      case "GET_ENTRIES":232        return { ok: true, data: vault.getEntries() };233      case "ADD_ENTRY": {234        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };235        const entry = await vault.addEntry(msg.payload as any);236        return { ok: true, data: entry };237      }238      case "BATCH_ADD_ENTRIES": {239        const { entries } = msg.payload as { entries: any[] };240        const added = await vault.batchAddEntries(entries);241        return { ok: true, data: added };242      }243      case "RESTORE_ENTRIES": {244        const { entries, mode, settings } = msg.payload as {245          entries: any[];246          mode: "replace" | "merge";247          settings?: vault.VaultSettings;248        };249        const summary = await vault.restoreEntries(entries, mode);250        if (settings && typeof settings === "object") {251          await vault.updateSettings(settings);252        }253        return { ok: true, data: summary };254      }255      case "CLEAR_VAULT_ENTRIES": {256        await vault.clearVaultEntries("REPLACE_ALL");257        return { ok: true };258      }259      case "GET_VAULT_HISTORY": {260        const snapshots = await vault.getVaultHistory();261        return { ok: true, data: snapshots };262      }263      case "RESTORE_VAULT_SNAPSHOT": {264        const { snapshotId } = msg.payload as { snapshotId: string };265        const result = await vault.restoreVaultSnapshot(snapshotId);266        if (!result.ok) return { ok: false, error: result.error };267        broadcastToContentScripts({ type: "VAULT_LOCKED" });268        return { ok: true };269      }270      case "COUNT_DUPLICATES": {271        return { ok: true, data: vault.countDuplicates() };272      }273      case "DEDUPLICATE_ENTRIES": {274        const removed = await vault.deduplicateEntries();275        return { ok: true, data: removed };276      }277      case "UPDATE_ENTRY": {278        const { id, patch } = msg.payload as any;279        await vault.updateEntry(id, patch);280        return { ok: true };281      }282      case "ADD_ADDITIONAL_URL": {283        const { id, url } = msg.payload as { id: string; url: string };284        const trimmed = typeof url === "string" ? url.trim() : "";285        if (!trimmed) return { ok: false, error: "url required" };286        const existing = vault.getEntryById(id);287        if (!existing) return { ok: false, error: "entry not found" };288        if (existing.type !== "login") return { ok: false, error: "login entries only" };289        const merged = [...(existing.additionalUrls ?? []), trimmed];290        await vault.updateEntry(id, { additionalUrls: merged });291        return { ok: true };292      }293      case "DELETE_ENTRY": {294        const { id } = msg.payload as { id: string };295        await vault.deleteEntry(id);296        return { ok: true };297      }298      case "GET_DELETED_ENTRIES":299        return { ok: true, data: vault.getDeletedEntries() };300      case "RESTORE_ENTRY": {301        const { id } = msg.payload as { id: string };302        await vault.restoreEntry(id);303        return { ok: true };304      }305      case "PURGE_ENTRY": {306        const { id } = msg.payload as { id: string };307        await vault.purgeEntry(id);308        return { ok: true };309      }310      case "PURGE_EXPIRED_TRASH": {311        const { retentionMs } = msg.payload as { retentionMs: number };312        const purged = await vault.purgeExpiredTrash(retentionMs);313        return { ok: true, data: purged };314      }315      case "AUTOFILL_QUERY": {316        if (!vault.isUnlocked()) {317          return { ok: false, error: "VAULT_LOCKED" };318        }319        const { domain, includeAll, kind } = msg.payload as {320          domain: string;321          includeAll?: boolean;322          kind?: "login" | "card";323        };324        // kind="card": return saved cards as compact summaries for the325        // inline card silver platter. Cards are not domain-scoped — every326        // saved card is a candidate on every checkout page — so domain is327        // ignored when kind === "card".328        if (kind === "card") {329          const cards = vault.getEntries().filter((e) => e.type === "card");330          return {331            ok: true,332            data: cards.map((e) => ({333              id: e.id,334              title: e.cardNickname || e.title,335              cardholderName: e.cardholderName,336              last4: e.last4,337              expMonth: e.expMonth,338              expYear: e.expYear,339              network: e.network,340            })),341          };342        }343        // The inline selector fills username+password into a form. Passkey-344        // only entries have no password to fill; sign-in for those goes345        // through the WebAuthn path instead. Filter them out everywhere so346        // the user doesn't see four "GitHub" rows that mostly do nothing.347        // Notes and cards never belonged here either.348        const matches = (349          includeAll350            ? vault351                .getEntries()352                .filter((entry) => entry.type !== "note" && entry.type !== "card")353            : vault.queryDomain(domain)354        ).filter((entry) => !isPasskeyOnly(entry));355        return {356          ok: true,357          data: matches.map((e) =>358            includeAll359              ? {360                  id: e.id,361                  title: e.title,362                  hasPasskey: e.passkey !== undefined,363                }364              : {365                  id: e.id,366                  title: e.title,367                  username: e.username,368                  url: e.url,369                  hasTotp: Boolean(e.totp),370                  hasPasskey: e.passkey !== undefined,371                }372          ),373        };374      }375      case "GET_ENTRY_FOR_FILL": {376        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };377        const { id } = msg.payload as { id: string };378        const entry = vault.getEntryById(id);379        if (!entry) return { ok: false, error: "entry not found" };380        // Passkey-only entries (passkey credential, no password) cannot be381        // filled into a form — sign-in goes through the WebAuthn path. A382        // login that ALSO has a passkey is still fillable for its password.383        if (isPasskeyOnly(entry)) return { ok: false, error: "passkey not fillable" };384        // Strip the passkey credential from the response — content scripts385        // never need the private key, and there's no reason to expose the386        // public credential metadata over the boundary either.387        const { passkey: _strippedPasskey, ...safeEntry } = entry;388        return { ok: true, data: safeEntry };389      }390      case "COPY": {391        const { text, label, alreadyWritten } = msg.payload as {392          text: string;393          label: string;394          alreadyWritten?: boolean;395        };396        await copyToClipboard(text, label, Boolean(alreadyWritten));397        return { ok: true };398      }399      case "CHECK_BREACH": {400        const { password } = msg.payload as { password: string };401        const count = await vault.checkBreach(password);402        return { ok: true, data: count };403      }404      case "CHECK_ALL_BREACHES": {405        const allEntries = vault.getEntries();406        const results: Record<string, number> = {};407        for (const entry of allEntries) {408          if (entry.type === "note") continue;409          if (!entry.password) continue;410          results[entry.id] = await vault.checkBreach(entry.password);411          // Small delay — be a good citizen to the HIBP API412          await new Promise((r) => setTimeout(r, 200));413        }414        // Persist any non-zero counts back to entries415        for (const [id, count] of Object.entries(results)) {416          const entry = vault.getEntryById(id);417          if (entry && (entry.breach ?? 0) !== count) {418            await vault.updateEntry(id, { breach: count > 0 ? count : undefined });419          }420        }421        return { ok: true, data: results };422      }423      case "GET_SETTINGS":424        return { ok: true, data: await vault.ensureSettingsLoaded() };425      case "UPDATE_SETTINGS": {426        const patch = msg.payload as Record<string, unknown>;427        await vault.updateSettings(patch as any);428        if (typeof patch.autoLockMinutes === "number") {429          await setupAutoLock();430          if (vault.isUnlocked()) touchAutoLock();431        }432        return { ok: true };433      }434      case "GET_PENDING_PASSKEY":435        return { ok: true, data: await getPendingPasskeyRequest() };436      case "APPROVE_PASSKEY": {437        const { requestId } = msg.payload as { requestId: number };438        await resolvePendingPasskeyRequest(requestId, true);439        return { ok: true };440      }441      case "DENY_PASSKEY": {442        const { requestId } = msg.payload as { requestId: number };443        await resolvePendingPasskeyRequest(requestId, false);444        return { ok: true };445      }446      case "GET_PASSKEYS":447        return {448          ok: true,449          data: vault.getEntries().filter((entry) => entry.passkey !== undefined),450        };451      case "DELETE_PASSKEY": {452        const { id } = msg.payload as { id: string };453        await vault.deleteEntry(id);454        return { ok: true };455      }456      case "GET_PASSKEY_PROVIDER_STATE":457        return { ok: true, data: await getPasskeyProviderState() };458      case "SET_PASSKEY_PROVIDER_ENABLED": {459        const { enabled } = msg.payload as { enabled: boolean };460        // Disabling is always free; gating fires only when a free user is461        // trying to turn passkey interception on.462        if (enabled) {463          const gate = await requirePro("passkeys");464          if (!gate.allowed) return { ok: false, error: "pro_required" };465        }466        return { ok: true, data: await setPasskeyProviderEnabled(enabled) };467      }468      case "FIRE_CANARY_PING": {469        const { webhookUrl, entryTitle, trigger } = msg.payload as {470          webhookUrl: string;471          entryTitle: string;472          trigger: "password_copied" | "username_copied" | "autofilled" | "submitted" | "test";473        };474        if (!isAllowedCanaryWebhookUrl(webhookUrl)) {475          return { ok: false, error: "invalid webhook url" };476        }477        const body = JSON.stringify({478          event: trigger === "test" ? "peach_canary_test" : "peach_canary_accessed",479          entry: entryTitle,480          trigger,481          timestamp: new Date().toISOString(),482          source: "peach-extension",483        });484        if (trigger === "test") {485          // Permitted outbound fetch: user-configured canary alert endpoint486          // (validated by isAllowedCanaryWebhookUrl above). This is the487          // only non-HIBP outbound call in the extension — see488          // Projects.md §3.7. Test pings are awaited so the UI can show489          // success/failure.490          try {491            const res = await fetch(webhookUrl, {492              method: "POST",493              headers: { "Content-Type": "application/json" },494              body,495            });496            return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };497          } catch (err) {498            return { ok: false, error: err instanceof Error ? err.message : "network error" };499          }500        }501        // Non-test triggers are fire-and-forget502        fetch(webhookUrl, {503          method: "POST",504          headers: { "Content-Type": "application/json" },505          body,506        }).catch(() => {});507        return { ok: true };508      }509      case "ACTIVATE_LICENSE": {510        const { key } = msg.payload as { key: string };511        const licenseInfo = await activateLicense(key);512        return { ok: true, data: licenseInfo };513      }514      case "GET_LICENSE": {515        const licenseInfo = await getLicenseInfo();516        return { ok: true, data: licenseInfo };517      }518      case "GET_LICENSE_KEY": {519        const key = await getLicenseKey();520        return { ok: true, data: key };521      }522      case "DEACTIVATE_LICENSE": {523        await deactivateLicense();524        return { ok: true };525      }526      case "SHOULD_PLAY_CELEBRATION": {527        const should = await shouldPlayCelebration();528        return { ok: true, data: should };529      }530      case "MARK_CELEBRATION_PLAYED": {531        await markCelebrationPlayed();532        return { ok: true };533      }534      case "OPEN_PRO_GATE": {535        // Content script requests: open popup and navigate to License section.536        const { feature } = (msg.payload ?? {}) as { feature?: string };537        if (chrome.storage.session) {538          await chrome.storage.session.set({ pendingProGate: { feature: feature ?? "passkeys" } });539        }540        try { await chrome.action.openPopup(); } catch { /* badge fallback */ }541        return { ok: true };542      }543      case "GET_IDENTITIES": {544        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };545        return { ok: true, data: vault.getIdentities() };546      }547      case "GET_ADVANCED_HEALTH_REPORT": {548        const gate = await requirePro("advanced_health");549        if (!gate.allowed) return { ok: false, error: "pro_required" };550        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };551        const report = await buildAdvancedHealthReport(vault.getEntries());552        return { ok: true, data: report };553      }554      case "INITIATE_PASSWORD_CHANGE": {555        const gate = await requirePro("smart_password_change");556        if (!gate.allowed) return { ok: false, error: "pro_required" };557        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };558        const { id } = msg.payload as { id: string };559        const entry = vault.getEntryById(id);560        if (!entry) return { ok: false, error: "entry not found" };561        const url = resolveResetUrl(entry);562        if (!url) return { ok: false, error: "no reset url" };563        try {564          await chrome.tabs.create({ url });565          return { ok: true, data: { url } };566        } catch (err) {567          return {568            ok: false,569            error: err instanceof Error ? err.message : "failed to open tab",570          };571        }572      }573      case "IS_DURESS_ENABLED": {574        const enabled = await vault.isDuressEnabled();575        return { ok: true, data: enabled };576      }577      case "SETUP_DURESS": {578        const { duressPassword } = msg.payload as { duressPassword: string };579        await vault.setupDuress(duressPassword);580        return { ok: true };581      }582      case "DISABLE_DURESS": {583        await vault.disableDuress();584        return { ok: true };585      }586      case "VERIFY_MAIN_PASSWORD": {587        const { password } = msg.payload as { password: string };588        const ok = await vault.verifyMainPassword(password);589        return { ok: true, data: ok };590      }591      case "CHANGE_PASSWORD": {592        const { currentPassword, newPassword } = msg.payload as {593          currentPassword: string;594          newPassword: string;595        };596        const changed = await vault.changePassword(currentPassword, newPassword);597        return changed598          ? { ok: true }599          : { ok: false, error: "incorrect current password" };600      }601      case "GET_SITE_PASSWORD_POLICY": {602        const [tab] = await chrome.tabs.query({ active: true, currentWindow: true });603        if (!tab?.id) return { ok: true, data: null };604        try {605          const response = await chrome.tabs.sendMessage(tab.id, {606            type: "GET_SITE_PASSWORD_POLICY",607          });608          return (response as MessageResponse) ?? { ok: true, data: null };609        } catch {610          return { ok: true, data: null };611        }612      }613      case "GET_SYNC_STATE": {614        const { getPairedDevices, getTrustedNetworks } = await import('./sync-storage');615        const { isOnTailscale } = await import('./sync-network');616        const { isProUser } = await import('./license');617        const pairedDevices = await getPairedDevices();618        const trustedNetworks = await getTrustedNetworks();619        const tailscale = await isOnTailscale();620        const pro = await isProUser();621        622        let status: SyncStatus = "offline";623        if (tailscale || trustedNetworks.some((n: { isTailscale?: boolean }) => !n.isTailscale)) {624          if (pairedDevices.length === 0) {625            status = "no_peers";626          } else {627            status = "synced";628          }629        } else {630          status = "not_trusted";631        }632        633        return { ok: true, data: { pairedDevices, trustedNetworks, status, isPro: pro } };634      }635      case "TRIGGER_SYNC": {636        const gate = await requirePro("sync");637        if (!gate.allowed) return { ok: false, error: "pro_required" };638        return { ok: true };639      }640      case "START_PAIRING": {641        const gate = await requirePro("sync");642        if (!gate.allowed) return { ok: false, error: "pro_required" };643        return { ok: true };644      }645      case "CANCEL_PAIRING": {646        return { ok: true };647      }648      case "ACCEPT_PAIRING": {649        const gate = await requirePro("sync");650        if (!gate.allowed) return { ok: false, error: "pro_required" };651        return { ok: true };652      }653      case "REMOVE_PAIRED_DEVICE": {654        const { deviceId } = msg.payload as { deviceId: string };655        const { removePairedDevice } = await import('./sync-storage');656        await removePairedDevice(deviceId);657        return { ok: true };658      }659      case "REMOVE_TRUSTED_NETWORK": {660        const { ssid, bssid, isTailscale } = msg.payload as any;661        const { removeTrustedNetwork, getTrustedNetworks } = await import('./sync-storage');662        const networks = await getTrustedNetworks();663        const network = networks.find((n: { ssid?: string; bssid?: string; isTailscale?: boolean }) => 664          (isTailscale ? n.isTailscale : n.ssid === ssid) && 665          (!bssid || n.bssid === bssid)666        );667        if (network) {668          await removeTrustedNetwork(network.addedAt);669        }670        return { ok: true };671      }672      case "MARK_NETWORK_TRUSTED": {673        const { addTrustedNetwork } = await import('./sync-storage');674        const { getCurrentNetwork } = await import('./sync-network');675        const network = await getCurrentNetwork();676        await addTrustedNetwork({677          ssid: network.ssid,678          bssid: network.bssid,679          isTailscale: network.isTailscale,680          addedAt: Date.now(),681        });682        return { ok: true };683      }684      case "GET_INCOMING_PAIRING_REQUEST": {685        const { getIncomingPairingRequest } = await import('./sync-storage');686        const request = await getIncomingPairingRequest();687        return { ok: true, data: request };688      }689      case "RESPOND_INCOMING_PAIRING": {690        const { accept } = msg.payload as { accept: boolean };691        const { getIncomingPairingRequest, clearIncomingPairingRequest } = await import('./sync-storage');692        const request = await getIncomingPairingRequest();693        if (!request) return { ok: false, error: "no_pending_request" };694        await clearIncomingPairingRequest();695        if (accept) {696          // Trust-store wiring lives in src/background/sync.ts (`trustDevice`).697          // It is dormant until the native messaging host installer (Phase 9)698          // ships and runtime trigger paths come online; the user-side accept699          // here clears the banner and records intent for Phase 10 E2E.700          try {701            const { trustDevice } = await import('./sync');702            await trustDevice(request.publicKeyHex, request.deviceName);703          } catch {704            // Native host not installed yet — accept still succeeds locally.705          }706        }707        return { ok: true, data: { accepted: accept, deviceName: request.deviceName } };708      }709      case "START_PEER_DISCOVERY": {710        const gate = await requirePro("sync");711        if (!gate.allowed) return { ok: false, error: "pro_required" };712        try {713          await startPeerDiscoveryForPopup();714          return { ok: true };715        } catch (err) {716          return { ok: false, error: err instanceof Error ? err.message : "discovery_failed" };717        }718      }719      case "STOP_PEER_DISCOVERY": {720        try {721          await stopPeerDiscoveryForPopup();722        } catch {723          // best-effort cleanup724        }725        return { ok: true };726      }727      case "INITIATE_PAIR_WITH_PEER": {728        const gate = await requirePro("sync");729        if (!gate.allowed) return { ok: false, error: "pro_required" };730        const { peer } = msg.payload as {731          peer: { deviceId: string; deviceName: string; host: string; port: number; x25519PublicKey: string };732        };733        try {734          const sync = await import('./sync');735          const connectionId = await sync.connectToPeer(peer.host, peer.port, peer.x25519PublicKey);736          // Connection success means the peer accepted the dormant Noise NK737          // pairing handshake. Trust persistence happens once the user-side738          // approval banner on the *peer* device confirms — we record local739          // state here so Settings reflects the new device immediately.740          const { addPairedDevice } = await import('./sync-storage');741          await addPairedDevice({742            deviceId: peer.deviceId,743            displayName: peer.deviceName,744            x25519PublicKey: peer.x25519PublicKey,745            pairedAt: Date.now(),746          });747          return { ok: true, data: { connectionId, deviceName: peer.deviceName } };748        } catch (err) {749          return { ok: false, error: err instanceof Error ? err.message : "pair_failed" };750        }751      }752      case "DEBUG_INJECT_INCOMING_PAIRING": {753        // Manual E2E rehearsal hook. Inserts a synthetic incoming pairing754        // request into session storage so Phase 7 banner UX can be exercised755        // without a live native host. No Pro gate — this is a no-op in756        // production unless explicitly invoked from a Settings debug action.757        const { deviceName, publicKeyHex } = (msg.payload ?? {}) as {758          deviceName?: string;759          publicKeyHex?: string;760        };761        if (!deviceName || !publicKeyHex) {762          return { ok: false, error: "missing_payload" };763        }764        const { setIncomingPairingRequest } = await import('./sync-storage');765        const now = Date.now();766        await setIncomingPairingRequest({767          deviceName,768          publicKeyHex,769          receivedAt: now,770          expiresAt: now + 60_000,771        });772        return { ok: true };773      }774      case "RESET_SYNC_IDENTITY": {775        const gate = await requirePro("sync");776        if (!gate.allowed) return { ok: false, error: "pro_required" };777        const { getPairedDevices, removePairedDevice } = await import('./sync-storage');778        const devices = await getPairedDevices();779        for (const device of devices) {780          await removePairedDevice(device.deviceId);781        }782        // Native rotation is best-effort: when the native messaging host is783        // not yet installed (Phase 9), connectNative throws and we still784        // honour the local clear so the UI reflects the reset. The native785        // identity rotates the next time the host starts cleanly anyway.786        let nativePublicKey: string | null = null;787        try {788          const { rotateNativeIdentity, disconnectSyncHost } = await import('./sync');789          nativePublicKey = await rotateNativeIdentity();790          disconnectSyncHost();791        } catch {792          nativePublicKey = null;793        }794        return { ok: true, data: { removedDevices: devices.length, nativePublicKey } };795      }796      case "RECORD_MANUAL_SUMMON": {797        const { domain } = msg.payload as { domain: string };798        const settings = vault.getSettings();799        const existing = settings.manualSummonDomains?.[domain];800        const now = Date.now();801        await vault.updateSettings({802          manualSummonDomains: {803            ...settings.manualSummonDomains,804            [domain]: {805              firstSummonedAt: existing?.firstSummonedAt ?? now,806              summonCount: (existing?.summonCount ?? 0) + 1,807              lastSummonedAt: now,808            },809          },810        });811        return { ok: true };812      }813      case "DECLINE_CARD_SAVE": {814        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };815        await vault.declineCardSaveOffer(last4, expMonth, expYear);816        return { ok: true };817      }818      case "IS_CARD_DECLINED": {819        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };820        const declined = await vault.isCardDeclined(last4, expMonth, expYear);821        return { ok: true, data: declined };822      }823      case "INITIATE_FIREFOX_PASSKEY_CREATE": {824        const { rpId, rpName, userName, userDisplayName } = (msg.payload ?? {}) as {825          rpId?: string;826          rpName?: string;827          userName?: string;828          userDisplayName?: string;829        };830        if (!rpId || !userName) return { ok: false, error: "rpId and userName required" };831        return await initiateFirefoxPasskeyCreate({832          rpId,833          rpName: rpName ?? rpId,834          userName,835          userDisplayName,836        });837      }838839      case "COMPLETE_FIREFOX_PASSKEY_CREATE": {840        const payload = msg.payload as Parameters<typeof completeFirefoxPasskeyCreate>[0] | undefined;841        if (!payload) return { ok: false, error: "missing payload" };842        return await completeFirefoxPasskeyCreate(payload);843      }844845      case "PASSKEY_OFFER_DECLINE": {846        const { domain } = (msg.payload ?? {}) as { domain?: string };847        if (!domain) return { ok: false, error: "domain required" };848        await recordPasskeyOfferDecline(domain);849        return { ok: true };850      }851852      case "GET_PASSKEY_OFFER_DECLINED": {853        const { domain } = (msg.payload ?? {}) as { domain?: string };854        if (!domain) return { ok: false, error: "domain required" };855        return { ok: true, data: await isPasskeyOfferDeclined(domain) };856      }857858      case "PASSKEY_HAS_CREDENTIALS": {859        const payload = msg.payload as {860          rpId?: string;861          allowCredentials?: Array<{ id: string; type?: string }>;862        } | undefined;863        if (!payload?.rpId) return { ok: false, error: "rpId required" };864        return await handlePasskeyHasCredentials({865          rpId: payload.rpId,866          allowCredentials: payload.allowCredentials ?? [],867        });868      }869870      case "PASSKEY_CREATE": {871        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyCreate>[0] | undefined;872        if (!payload?.rpId || !payload?.userName) {873          return { ok: false, error: "rpId and userName required" };874        }875        return await handleFirefoxPasskeyCreate(payload);876      }877878      case "PASSKEY_GET": {879        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyGet>[0] | undefined;880        if (!payload?.rpId) return { ok: false, error: "rpId required" };881        return await handleFirefoxPasskeyGet(payload);882      }883884      case "GET_PASSKEY_FOR_DOMAIN": {885        const { domain } = (msg.payload ?? {}) as { domain?: string };886        if (!domain) return { ok: false, error: "domain required" };887        if (!vault.isUnlocked()) return { ok: true, data: null };888        const match = vault889          .getEntries()890          .find((entry) => entry.passkey?.rpId === domain);891        if (!match || !match.passkey) return { ok: true, data: null };892        // Slim shape — only the fields State 11 needs. Never expose private893        // key material, even though this is locked behind isUnlocked.894        return {895          ok: true,896          data: {897            rpId: match.passkey.rpId,898            userName: match.passkey.userName,899            browser: match.passkey.browser,900          },901        };902      }903904      case "DESTROY_VAULT": {905        // Irreversible by design. Lock zeroes the derived key + in-memory entries;906        // storage.local.clear() wipes every Peach key (slots, settings, license,907        // onboarded flag, history, sync state, declined cards, recall, etc.);908        // session.clear() wipes pending passkey requests + pro-notice queues.909        // Caller (Panic.tsx) handles UI navigation back to onboarding.910        vault.lock();911        await storageClear();912        // Belt-and-suspenders: storage.local.clear() already wipes913        // peach_vault_history, but if storage.ts ever routes history to a914        // different backend (e.g. Capacitor secure storage on Android) the915        // explicit clear keeps the invariant that Panic leaves no recoverable916        // vault state behind.917        await vault.clearVaultHistory();918        if (!Capacitor.isNativePlatform() && chrome.storage.session) {919          await chrome.storage.session.clear();920        }921        return { ok: true };922      }923924      case "SUBMIT_FEEDBACK": {925        const { category, message, version, browser } = msg.payload as {926          category: string;927          message: string;928          version: string;929          browser: string;930        };931        if (!message.trim()) return { ok: false, error: "message is empty" };932        if (!FEEDBACK_ENDPOINT) return { ok: true };933        if (!isAllowedCanaryWebhookUrl(FEEDBACK_ENDPOINT)) {934          return { ok: false, error: "invalid feedback endpoint" };935        }936        try {937          const res = await fetch(FEEDBACK_ENDPOINT, {938            method: "POST",939            headers: { "Content-Type": "application/json" },940            body: JSON.stringify({ category, message, version, browser, source: "peach-extension" }),941          });942          return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };943        } catch (err) {944          return { ok: false, error: err instanceof Error ? err.message : "network error" };945        }946      }947      default:948        return { ok: false, error: "unknown message type" };949    }950  } catch (err) {951    return {952      ok: false,953      error: err instanceof Error ? err.message : "operation failed",954    };955  }956}957958/** Notify all content scripts that the vault just became available. */959function broadcastToContentScripts(message: { type: string }): void {960  if (Capacitor.isNativePlatform() || !chrome.tabs?.query) return;961  chrome.tabs.query({}, (tabs) => {962    for (const tab of tabs) {963      if (tab.id !== undefined) {964        chrome.tabs.sendMessage(tab.id, message).catch(() => {965          // Tab may not have a content script — silently ignore966        });967      }968    }969  });970}971972function shouldRefreshAutoLock(type: MessageType): boolean {973  return (974    type !== "HAS_VAULT" &&975    type !== "IS_UNLOCKED" &&976    type !== "GET_VAULT_STATUS" &&977    type !== "LOCK" &&978    type !== "UPDATE_SETTINGS" &&979    type !== "GET_PENDING_PASSKEY" &&980    type !== "GET_PASSKEY_PROVIDER_STATE" &&981    type !== "DECLINE_CARD_SAVE" &&982    type !== "IS_CARD_DECLINED" &&983    type !== "SUBMIT_FEEDBACK"984  );985}986987function isAllowedCanaryWebhookUrl(value: string): boolean {988  try {989    const url = new URL(value);990    if (url.protocol !== "https:") return false;991992    const hostname = url.hostname.toLowerCase();993    if (994      hostname === "localhost" ||995      hostname.endsWith(".localhost") ||996      isPrivateIpv4(hostname) ||997      isPrivateIpv6(hostname)998    ) {999      return false;1000    }10011002    return true;1003  } catch {1004    return false;1005  }1006}10071008function isPrivateIpv4(hostname: string): boolean {1009  if (PRIVATE_IPV4_RANGES.some((range) => hostname.startsWith(range.prefix))) {1010    return true;1011  }10121013  const octets = hostname.split(".").map((part) => Number(part));1014  if (octets.length !== 4 || octets.some((octet) => !Number.isInteger(octet) || octet < 0 || octet > 255)) {1015    return false;1016  }10171018  return octets[0] === 172 && octets[1] >= 16 && octets[1] <= 31;1019}10201021function isPrivateIpv6(hostname: string): boolean {1022  const normalized = hostname.replace(/^\[|\]$/g, "").toLowerCase();1023  return (1024    normalized === "::1" ||1025    normalized.startsWith("fc") ||1026    normalized.startsWith("fd") ||1027    normalized.startsWith("fe80:")1028  );1029}