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            x25519PublicKey: peer.x25519PublicKey,117            alreadyPaired,118          },119        })120        .catch(() => {});121    })();122  });123  const unsubLost = sync.onPeerLost((deviceId) => {124    if (Capacitor.isNativePlatform()) return;125    chrome.runtime126      .sendMessage({ type: "SYNC_PEER_LOST", deviceId })127      .catch(() => {});128  });129  peerDiscoverySubscriptions = [unsubDiscovered, unsubLost];130  sync.discoverPeers();131}132133async function stopPeerDiscoveryForPopup(): Promise<void> {134  for (const unsub of peerDiscoverySubscriptions) unsub();135  peerDiscoverySubscriptions = [];136  try {137    const sync = await import('./sync');138    if (sync.isHostConnected()) {139      await sync.stopDiscovery();140    }141  } catch {142    // best-effort143  }144}145146const PRIVATE_IPV4_RANGES = [147  { prefix: "10." },148  { prefix: "127." },149  { prefix: "169.254." },150  { prefix: "192.168." },151];152153// Empty disables network submission while the UI continues to function as a154// no-op (the handler returns ok:true without calling fetch). When set, the155// URL is validated by `isAllowedCanaryWebhookUrl` before any request, so the156// same private-IP/HTTPS rules that gate canary webhooks apply here.157const FEEDBACK_ENDPOINT = "";158159export function setupMessageHandler(): void {160  chrome.runtime.onMessage.addListener(161    (msg: unknown, sender, sendResponse) => {162      if (!isMessage(msg)) {163        sendResponse({ ok: false, error: "invalid message" });164        return true;165      }166      handleMessage(msg, sender)167        .then(sendResponse)168        .catch((err) =>169          sendResponse({170            ok: false,171            error: err instanceof Error ? err.message : String(err),172          })173        );174      return true;175    }176  );177}178179function isMessage(m: unknown): m is Message {180  return typeof m === "object" && m !== null && "type" in m;181}182183export async function handleMessage(184  msg: Message,185  sender: Partial<chrome.runtime.MessageSender> = {}186): Promise<MessageResponse> {187  try {188    // Validate sender — only allow messages from our extension pages/scripts.189    // `sender.id` is undefined for messages originating from extension UI190    // (popup/options), which is legitimate; reject only when it is defined191    // and does not match our extension id.192    if (193      !Capacitor.isNativePlatform() &&194      sender.id !== undefined &&195      sender.id !== chrome.runtime.id196    ) {197      return { ok: false, error: "invalid sender" };198    }199200    if (shouldRefreshAutoLock(msg.type) && vault.isUnlocked()) {201      touchAutoLock();202    }203204    switch (msg.type) {205      case "CREATE_VAULT": {206        const { password } = msg.payload as { password: string };207        await vault.createVault(password);208        await setupAutoLock();209        broadcastToContentScripts({ type: "VAULT_UNLOCKED" });210        return { ok: true };211      }212      case "UNLOCK": {213        const { password } = msg.payload as { password: string };214        const ok = await vault.unlock(password);215        if (ok) {216          await setupAutoLock();217          broadcastToContentScripts({ type: "VAULT_UNLOCKED" });218        }219        return { ok };220      }221      case "LOCK":222        vault.lock();223        return { ok: true };224      case "IS_UNLOCKED":225        return { ok: true, data: vault.isUnlocked() };226      case "GET_VAULT_STATUS":227        return { ok: true, unlocked: vault.isUnlocked() };228      case "HAS_VAULT":229        return { ok: true, data: await vault.hasVault() };230      case "GET_ENTRIES":231        return { ok: true, data: vault.getEntries() };232      case "ADD_ENTRY": {233        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };234        const entry = await vault.addEntry(msg.payload as any);235        return { ok: true, data: entry };236      }237      case "BATCH_ADD_ENTRIES": {238        const { entries } = msg.payload as { entries: any[] };239        const added = await vault.batchAddEntries(entries);240        return { ok: true, data: added };241      }242      case "RESTORE_ENTRIES": {243        const { entries, mode, settings } = msg.payload as {244          entries: any[];245          mode: "replace" | "merge";246          settings?: vault.VaultSettings;247        };248        const summary = await vault.restoreEntries(entries, mode);249        if (settings && typeof settings === "object") {250          await vault.updateSettings(settings);251        }252        return { ok: true, data: summary };253      }254      case "CLEAR_VAULT_ENTRIES": {255        await vault.clearVaultEntries("REPLACE_ALL");256        return { ok: true };257      }258      case "LIST_VAULT_SNAPSHOTS": {259        const snapshots = await vault.listSnapshots();260        return { ok: true, data: snapshots };261      }262      case "RESTORE_VAULT_SNAPSHOT": {263        const { index, password } = msg.payload as { index: number; password: string };264        const ok = await vault.restoreFromSnapshot(index, password);265        if (ok) broadcastToContentScripts({ type: "VAULT_UNLOCKED" });266        return { ok };267      }268      case "COUNT_DUPLICATES": {269        return { ok: true, data: vault.countDuplicates() };270      }271      case "DEDUPLICATE_ENTRIES": {272        const removed = await vault.deduplicateEntries();273        return { ok: true, data: removed };274      }275      case "UPDATE_ENTRY": {276        const { id, patch } = msg.payload as any;277        await vault.updateEntry(id, patch);278        return { ok: true };279      }280      case "ADD_ADDITIONAL_URL": {281        const { id, url } = msg.payload as { id: string; url: string };282        const trimmed = typeof url === "string" ? url.trim() : "";283        if (!trimmed) return { ok: false, error: "url required" };284        const existing = vault.getEntryById(id);285        if (!existing) return { ok: false, error: "entry not found" };286        if (existing.type !== "login") return { ok: false, error: "login entries only" };287        const merged = [...(existing.additionalUrls ?? []), trimmed];288        await vault.updateEntry(id, { additionalUrls: merged });289        return { ok: true };290      }291      case "DELETE_ENTRY": {292        const { id } = msg.payload as { id: string };293        await vault.deleteEntry(id);294        return { ok: true };295      }296      case "GET_DELETED_ENTRIES":297        return { ok: true, data: vault.getDeletedEntries() };298      case "RESTORE_ENTRY": {299        const { id } = msg.payload as { id: string };300        await vault.restoreEntry(id);301        return { ok: true };302      }303      case "PURGE_ENTRY": {304        const { id } = msg.payload as { id: string };305        await vault.purgeEntry(id);306        return { ok: true };307      }308      case "PURGE_EXPIRED_TRASH": {309        const { retentionMs } = msg.payload as { retentionMs: number };310        const purged = await vault.purgeExpiredTrash(retentionMs);311        return { ok: true, data: purged };312      }313      case "AUTOFILL_QUERY": {314        if (!vault.isUnlocked()) {315          return { ok: false, error: "VAULT_LOCKED" };316        }317        const { domain, includeAll, kind } = msg.payload as {318          domain: string;319          includeAll?: boolean;320          kind?: "login" | "card";321        };322        // kind="card": return saved cards as compact summaries for the323        // inline card silver platter. Cards are not domain-scoped — every324        // saved card is a candidate on every checkout page — so domain is325        // ignored when kind === "card".326        if (kind === "card") {327          const cards = vault.getEntries().filter((e) => e.type === "card");328          return {329            ok: true,330            data: cards.map((e) => ({331              id: e.id,332              title: e.cardNickname || e.title,333              cardholderName: e.cardholderName,334              last4: e.last4,335              expMonth: e.expMonth,336              expYear: e.expYear,337              network: e.network,338            })),339          };340        }341        // The inline selector fills username+password into a form. Passkey-342        // only entries have no password to fill; sign-in for those goes343        // through the WebAuthn path instead. Filter them out everywhere so344        // the user doesn't see four "GitHub" rows that mostly do nothing.345        // Notes and cards never belonged here either.346        const matches = (347          includeAll348            ? vault349                .getEntries()350                .filter((entry) => entry.type !== "note" && entry.type !== "card")351            : vault.queryDomain(domain)352        ).filter((entry) => !isPasskeyOnly(entry));353        return {354          ok: true,355          data: matches.map((e) =>356            includeAll357              ? {358                  id: e.id,359                  title: e.title,360                  hasPasskey: e.passkey !== undefined,361                }362              : {363                  id: e.id,364                  title: e.title,365                  username: e.username,366                  url: e.url,367                  hasTotp: Boolean(e.totp),368                  hasPasskey: e.passkey !== undefined,369                }370          ),371        };372      }373      case "GET_ENTRY_FOR_FILL": {374        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };375        const { id } = msg.payload as { id: string };376        const entry = vault.getEntryById(id);377        if (!entry) return { ok: false, error: "entry not found" };378        // Passkey-only entries (passkey credential, no password) cannot be379        // filled into a form — sign-in goes through the WebAuthn path. A380        // login that ALSO has a passkey is still fillable for its password.381        if (isPasskeyOnly(entry)) return { ok: false, error: "passkey not fillable" };382        // Strip the passkey credential from the response — content scripts383        // never need the private key, and there's no reason to expose the384        // public credential metadata over the boundary either.385        const { passkey: _strippedPasskey, ...safeEntry } = entry;386        return { ok: true, data: safeEntry };387      }388      case "COPY": {389        const { text, label, alreadyWritten } = msg.payload as {390          text: string;391          label: string;392          alreadyWritten?: boolean;393        };394        await copyToClipboard(text, label, Boolean(alreadyWritten));395        return { ok: true };396      }397      case "CHECK_BREACH": {398        const { password } = msg.payload as { password: string };399        const count = await vault.checkBreach(password);400        return { ok: true, data: count };401      }402      case "CHECK_ALL_BREACHES": {403        const allEntries = vault.getEntries();404        const results: Record<string, number> = {};405        for (const entry of allEntries) {406          if (entry.type === "note") continue;407          if (!entry.password) continue;408          results[entry.id] = await vault.checkBreach(entry.password);409          // Small delay — be a good citizen to the HIBP API410          await new Promise((r) => setTimeout(r, 200));411        }412        // Persist any non-zero counts back to entries413        for (const [id, count] of Object.entries(results)) {414          const entry = vault.getEntryById(id);415          if (entry && (entry.breach ?? 0) !== count) {416            await vault.updateEntry(id, { breach: count > 0 ? count : undefined });417          }418        }419        return { ok: true, data: results };420      }421      case "GET_SETTINGS":422        return { ok: true, data: await vault.ensureSettingsLoaded() };423      case "UPDATE_SETTINGS": {424        const patch = msg.payload as Record<string, unknown>;425        await vault.updateSettings(patch as any);426        if (typeof patch.autoLockMinutes === "number") {427          await setupAutoLock();428          if (vault.isUnlocked()) touchAutoLock();429        }430        return { ok: true };431      }432      case "GET_PENDING_PASSKEY":433        return { ok: true, data: await getPendingPasskeyRequest() };434      case "APPROVE_PASSKEY": {435        const { requestId } = msg.payload as { requestId: number };436        await resolvePendingPasskeyRequest(requestId, true);437        return { ok: true };438      }439      case "DENY_PASSKEY": {440        const { requestId } = msg.payload as { requestId: number };441        await resolvePendingPasskeyRequest(requestId, false);442        return { ok: true };443      }444      case "GET_PASSKEYS":445        return {446          ok: true,447          data: vault.getEntries().filter((entry) => entry.passkey !== undefined),448        };449      case "DELETE_PASSKEY": {450        const { id } = msg.payload as { id: string };451        await vault.deleteEntry(id);452        return { ok: true };453      }454      case "GET_PASSKEY_PROVIDER_STATE":455        return { ok: true, data: await getPasskeyProviderState() };456      case "SET_PASSKEY_PROVIDER_ENABLED": {457        const { enabled } = msg.payload as { enabled: boolean };458        // Disabling is always free; gating fires only when a free user is459        // trying to turn passkey interception on.460        if (enabled) {461          const gate = await requirePro("passkeys");462          if (!gate.allowed) return { ok: false, error: "pro_required" };463        }464        return { ok: true, data: await setPasskeyProviderEnabled(enabled) };465      }466      case "FIRE_CANARY_PING": {467        const { webhookUrl, entryTitle, trigger } = msg.payload as {468          webhookUrl: string;469          entryTitle: string;470          trigger: "password_copied" | "username_copied" | "autofilled" | "submitted" | "test";471        };472        if (!isAllowedCanaryWebhookUrl(webhookUrl)) {473          return { ok: false, error: "invalid webhook url" };474        }475        const body = JSON.stringify({476          event: trigger === "test" ? "peach_canary_test" : "peach_canary_accessed",477          entry: entryTitle,478          trigger,479          timestamp: new Date().toISOString(),480          source: "peach-extension",481        });482        if (trigger === "test") {483          // Permitted outbound fetch: user-configured canary alert endpoint484          // (validated by isAllowedCanaryWebhookUrl above). This is the485          // only non-HIBP outbound call in the extension — see486          // Projects.md §3.7. Test pings are awaited so the UI can show487          // success/failure.488          try {489            const res = await fetch(webhookUrl, {490              method: "POST",491              headers: { "Content-Type": "application/json" },492              body,493            });494            return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };495          } catch (err) {496            return { ok: false, error: err instanceof Error ? err.message : "network error" };497          }498        }499        // Non-test triggers are fire-and-forget500        fetch(webhookUrl, {501          method: "POST",502          headers: { "Content-Type": "application/json" },503          body,504        }).catch(() => {});505        return { ok: true };506      }507      case "ACTIVATE_LICENSE": {508        const { key } = msg.payload as { key: string };509        const licenseInfo = await activateLicense(key);510        return { ok: true, data: licenseInfo };511      }512      case "GET_LICENSE": {513        const licenseInfo = await getLicenseInfo();514        return { ok: true, data: licenseInfo };515      }516      case "GET_LICENSE_KEY": {517        const key = await getLicenseKey();518        return { ok: true, data: key };519      }520      case "DEACTIVATE_LICENSE": {521        await deactivateLicense();522        return { ok: true };523      }524      case "SHOULD_PLAY_CELEBRATION": {525        const should = await shouldPlayCelebration();526        return { ok: true, data: should };527      }528      case "MARK_CELEBRATION_PLAYED": {529        await markCelebrationPlayed();530        return { ok: true };531      }532      case "OPEN_PRO_GATE": {533        // Content script requests: open popup and navigate to License section.534        const { feature } = (msg.payload ?? {}) as { feature?: string };535        if (chrome.storage.session) {536          await chrome.storage.session.set({ pendingProGate: { feature: feature ?? "passkeys" } });537        }538        try { await chrome.action.openPopup(); } catch { /* badge fallback */ }539        return { ok: true };540      }541      case "GET_IDENTITIES": {542        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };543        return { ok: true, data: vault.getIdentities() };544      }545      case "GET_ADVANCED_HEALTH_REPORT": {546        const gate = await requirePro("advanced_health");547        if (!gate.allowed) return { ok: false, error: "pro_required" };548        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };549        const report = await buildAdvancedHealthReport(vault.getEntries());550        return { ok: true, data: report };551      }552      case "INITIATE_PASSWORD_CHANGE": {553        const gate = await requirePro("smart_password_change");554        if (!gate.allowed) return { ok: false, error: "pro_required" };555        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };556        const { id } = msg.payload as { id: string };557        const entry = vault.getEntryById(id);558        if (!entry) return { ok: false, error: "entry not found" };559        const url = resolveResetUrl(entry);560        if (!url) return { ok: false, error: "no reset url" };561        try {562          await chrome.tabs.create({ url });563          return { ok: true, data: { url } };564        } catch (err) {565          return {566            ok: false,567            error: err instanceof Error ? err.message : "failed to open tab",568          };569        }570      }571      case "IS_DURESS_ENABLED": {572        const enabled = await vault.isDuressEnabled();573        return { ok: true, data: enabled };574      }575      case "SETUP_DURESS": {576        const { duressPassword } = msg.payload as { duressPassword: string };577        await vault.setupDuress(duressPassword);578        return { ok: true };579      }580      case "DISABLE_DURESS": {581        await vault.disableDuress();582        return { ok: true };583      }584      case "VERIFY_MAIN_PASSWORD": {585        const { password } = msg.payload as { password: string };586        const ok = await vault.verifyMainPassword(password);587        return { ok: true, data: ok };588      }589      case "CHANGE_PASSWORD": {590        const { currentPassword, newPassword } = msg.payload as {591          currentPassword: string;592          newPassword: string;593        };594        const changed = await vault.changePassword(currentPassword, newPassword);595        return changed596          ? { ok: true }597          : { ok: false, error: "incorrect current password" };598      }599      case "GET_SITE_PASSWORD_POLICY": {600        const [tab] = await chrome.tabs.query({ active: true, currentWindow: true });601        if (!tab?.id) return { ok: true, data: null };602        try {603          const response = await chrome.tabs.sendMessage(tab.id, {604            type: "GET_SITE_PASSWORD_POLICY",605          });606          return (response as MessageResponse) ?? { ok: true, data: null };607        } catch {608          return { ok: true, data: null };609        }610      }611      case "GET_SYNC_STATE": {612        const { getPairedDevices, getTrustedNetworks } = await import('./sync-storage');613        const { isOnTailscale } = await import('./sync-network');614        const { isProUser } = await import('./license');615        const pairedDevices = await getPairedDevices();616        const trustedNetworks = await getTrustedNetworks();617        const tailscale = await isOnTailscale();618        const pro = await isProUser();619        620        let status: SyncStatus = "offline";621        if (tailscale || trustedNetworks.some((n: { isTailscale?: boolean }) => !n.isTailscale)) {622          if (pairedDevices.length === 0) {623            status = "no_peers";624          } else {625            status = "synced";626          }627        } else {628          status = "not_trusted";629        }630        631        return { ok: true, data: { pairedDevices, trustedNetworks, status, isPro: pro } };632      }633      case "TRIGGER_SYNC": {634        const gate = await requirePro("sync");635        if (!gate.allowed) return { ok: false, error: "pro_required" };636        return { ok: true };637      }638      case "START_PAIRING": {639        const gate = await requirePro("sync");640        if (!gate.allowed) return { ok: false, error: "pro_required" };641        return { ok: true };642      }643      case "CANCEL_PAIRING": {644        return { ok: true };645      }646      case "ACCEPT_PAIRING": {647        const gate = await requirePro("sync");648        if (!gate.allowed) return { ok: false, error: "pro_required" };649        return { ok: true };650      }651      case "REMOVE_PAIRED_DEVICE": {652        const { deviceId } = msg.payload as { deviceId: string };653        const { removePairedDevice } = await import('./sync-storage');654        await removePairedDevice(deviceId);655        return { ok: true };656      }657      case "REMOVE_TRUSTED_NETWORK": {658        const { ssid, bssid, isTailscale } = msg.payload as any;659        const { removeTrustedNetwork, getTrustedNetworks } = await import('./sync-storage');660        const networks = await getTrustedNetworks();661        const network = networks.find((n: { ssid?: string; bssid?: string; isTailscale?: boolean }) => 662          (isTailscale ? n.isTailscale : n.ssid === ssid) && 663          (!bssid || n.bssid === bssid)664        );665        if (network) {666          await removeTrustedNetwork(network.addedAt);667        }668        return { ok: true };669      }670      case "MARK_NETWORK_TRUSTED": {671        const { addTrustedNetwork } = await import('./sync-storage');672        const { getCurrentNetwork } = await import('./sync-network');673        const network = await getCurrentNetwork();674        await addTrustedNetwork({675          ssid: network.ssid,676          bssid: network.bssid,677          isTailscale: network.isTailscale,678          addedAt: Date.now(),679        });680        return { ok: true };681      }682      case "GET_INCOMING_PAIRING_REQUEST": {683        const { getIncomingPairingRequest } = await import('./sync-storage');684        const request = await getIncomingPairingRequest();685        return { ok: true, data: request };686      }687      case "RESPOND_INCOMING_PAIRING": {688        const { accept } = msg.payload as { accept: boolean };689        const { getIncomingPairingRequest, clearIncomingPairingRequest } = await import('./sync-storage');690        const request = await getIncomingPairingRequest();691        if (!request) return { ok: false, error: "no_pending_request" };692        await clearIncomingPairingRequest();693        if (accept) {694          // Trust-store wiring lives in src/background/sync.ts (`trustDevice`).695          // It is dormant until the native messaging host installer (Phase 9)696          // ships and runtime trigger paths come online; the user-side accept697          // here clears the banner and records intent for Phase 10 E2E.698          try {699            const { trustDevice } = await import('./sync');700            await trustDevice(request.publicKeyHex, request.deviceName);701          } catch {702            // Native host not installed yet — accept still succeeds locally.703          }704        }705        return { ok: true, data: { accepted: accept, deviceName: request.deviceName } };706      }707      case "START_PEER_DISCOVERY": {708        const gate = await requirePro("sync");709        if (!gate.allowed) return { ok: false, error: "pro_required" };710        try {711          await startPeerDiscoveryForPopup();712          return { ok: true };713        } catch (err) {714          return { ok: false, error: err instanceof Error ? err.message : "discovery_failed" };715        }716      }717      case "STOP_PEER_DISCOVERY": {718        try {719          await stopPeerDiscoveryForPopup();720        } catch {721          // best-effort cleanup722        }723        return { ok: true };724      }725      case "INITIATE_PAIR_WITH_PEER": {726        const gate = await requirePro("sync");727        if (!gate.allowed) return { ok: false, error: "pro_required" };728        const { peer } = msg.payload as {729          peer: { deviceId: string; deviceName: string; host: string; port: number; x25519PublicKey: string };730        };731        try {732          const sync = await import('./sync');733          const connectionId = await sync.connectToPeer(peer.host, peer.port, peer.x25519PublicKey);734          // Connection success means the peer accepted the dormant Noise NK735          // pairing handshake. Trust persistence happens once the user-side736          // approval banner on the *peer* device confirms — we record local737          // state here so Settings reflects the new device immediately.738          const { addPairedDevice } = await import('./sync-storage');739          await addPairedDevice({740            deviceId: peer.deviceId,741            displayName: peer.deviceName,742            x25519PublicKey: peer.x25519PublicKey,743            pairedAt: Date.now(),744          });745          return { ok: true, data: { connectionId, deviceName: peer.deviceName } };746        } catch (err) {747          return { ok: false, error: err instanceof Error ? err.message : "pair_failed" };748        }749      }750      case "DEBUG_INJECT_INCOMING_PAIRING": {751        // Manual E2E rehearsal hook. Inserts a synthetic incoming pairing752        // request into session storage so Phase 7 banner UX can be exercised753        // without a live native host. No Pro gate — this is a no-op in754        // production unless explicitly invoked from a Settings debug action.755        const { deviceName, publicKeyHex } = (msg.payload ?? {}) as {756          deviceName?: string;757          publicKeyHex?: string;758        };759        if (!deviceName || !publicKeyHex) {760          return { ok: false, error: "missing_payload" };761        }762        const { setIncomingPairingRequest } = await import('./sync-storage');763        const now = Date.now();764        await setIncomingPairingRequest({765          deviceName,766          publicKeyHex,767          receivedAt: now,768          expiresAt: now + 60_000,769        });770        return { ok: true };771      }772      case "RESET_SYNC_IDENTITY": {773        const gate = await requirePro("sync");774        if (!gate.allowed) return { ok: false, error: "pro_required" };775        const { getPairedDevices, removePairedDevice } = await import('./sync-storage');776        const devices = await getPairedDevices();777        for (const device of devices) {778          await removePairedDevice(device.deviceId);779        }780        // Native rotation is best-effort: when the native messaging host is781        // not yet installed (Phase 9), connectNative throws and we still782        // honour the local clear so the UI reflects the reset. The native783        // identity rotates the next time the host starts cleanly anyway.784        let nativePublicKey: string | null = null;785        try {786          const { rotateNativeIdentity, disconnectSyncHost } = await import('./sync');787          nativePublicKey = await rotateNativeIdentity();788          disconnectSyncHost();789        } catch {790          nativePublicKey = null;791        }792        return { ok: true, data: { removedDevices: devices.length, nativePublicKey } };793      }794      case "RECORD_MANUAL_SUMMON": {795        const { domain } = msg.payload as { domain: string };796        const settings = vault.getSettings();797        const existing = settings.manualSummonDomains?.[domain];798        const now = Date.now();799        await vault.updateSettings({800          manualSummonDomains: {801            ...settings.manualSummonDomains,802            [domain]: {803              firstSummonedAt: existing?.firstSummonedAt ?? now,804              summonCount: (existing?.summonCount ?? 0) + 1,805              lastSummonedAt: now,806            },807          },808        });809        return { ok: true };810      }811      case "DECLINE_CARD_SAVE": {812        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };813        await vault.declineCardSaveOffer(last4, expMonth, expYear);814        return { ok: true };815      }816      case "IS_CARD_DECLINED": {817        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };818        const declined = await vault.isCardDeclined(last4, expMonth, expYear);819        return { ok: true, data: declined };820      }821      case "INITIATE_FIREFOX_PASSKEY_CREATE": {822        const { rpId, rpName, userName, userDisplayName } = (msg.payload ?? {}) as {823          rpId?: string;824          rpName?: string;825          userName?: string;826          userDisplayName?: string;827        };828        if (!rpId || !userName) return { ok: false, error: "rpId and userName required" };829        return await initiateFirefoxPasskeyCreate({830          rpId,831          rpName: rpName ?? rpId,832          userName,833          userDisplayName,834        });835      }836837      case "COMPLETE_FIREFOX_PASSKEY_CREATE": {838        const payload = msg.payload as Parameters<typeof completeFirefoxPasskeyCreate>[0] | undefined;839        if (!payload) return { ok: false, error: "missing payload" };840        return await completeFirefoxPasskeyCreate(payload);841      }842843      case "PASSKEY_OFFER_DECLINE": {844        const { domain } = (msg.payload ?? {}) as { domain?: string };845        if (!domain) return { ok: false, error: "domain required" };846        await recordPasskeyOfferDecline(domain);847        return { ok: true };848      }849850      case "GET_PASSKEY_OFFER_DECLINED": {851        const { domain } = (msg.payload ?? {}) as { domain?: string };852        if (!domain) return { ok: false, error: "domain required" };853        return { ok: true, data: await isPasskeyOfferDeclined(domain) };854      }855856      case "PASSKEY_HAS_CREDENTIALS": {857        const payload = msg.payload as {858          rpId?: string;859          allowCredentials?: Array<{ id: string; type?: string }>;860        } | undefined;861        if (!payload?.rpId) return { ok: false, error: "rpId required" };862        return await handlePasskeyHasCredentials({863          rpId: payload.rpId,864          allowCredentials: payload.allowCredentials ?? [],865        });866      }867868      case "PASSKEY_CREATE": {869        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyCreate>[0] | undefined;870        if (!payload?.rpId || !payload?.userName) {871          return { ok: false, error: "rpId and userName required" };872        }873        return await handleFirefoxPasskeyCreate(payload);874      }875876      case "PASSKEY_GET": {877        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyGet>[0] | undefined;878        if (!payload?.rpId) return { ok: false, error: "rpId required" };879        return await handleFirefoxPasskeyGet(payload);880      }881882      case "GET_PASSKEY_FOR_DOMAIN": {883        const { domain } = (msg.payload ?? {}) as { domain?: string };884        if (!domain) return { ok: false, error: "domain required" };885        if (!vault.isUnlocked()) return { ok: true, data: null };886        const match = vault887          .getEntries()888          .find((entry) => entry.passkey?.rpId === domain);889        if (!match || !match.passkey) return { ok: true, data: null };890        // Slim shape — only the fields State 11 needs. Never expose private891        // key material, even though this is locked behind isUnlocked.892        return {893          ok: true,894          data: {895            rpId: match.passkey.rpId,896            userName: match.passkey.userName,897            browser: match.passkey.browser,898          },899        };900      }901902      case "DESTROY_VAULT": {903        // Irreversible by design. Lock zeroes the derived key + in-memory entries;904        // storage.local.clear() wipes every Peach key (slots, settings, license,905        // onboarded flag, snapshots, sync state, declined cards, recall, etc.);906        // session.clear() wipes pending passkey requests + pro-notice queues.907        // Caller (Panic.tsx) handles UI navigation back to onboarding.908        vault.lock();909        await storageClear();910        if (!Capacitor.isNativePlatform() && chrome.storage.session) {911          await chrome.storage.session.clear();912        }913        return { ok: true };914      }915916      case "SUBMIT_FEEDBACK": {917        const { category, message, version, browser } = msg.payload as {918          category: string;919          message: string;920          version: string;921          browser: string;922        };923        if (!message.trim()) return { ok: false, error: "message is empty" };924        if (!FEEDBACK_ENDPOINT) return { ok: true };925        if (!isAllowedCanaryWebhookUrl(FEEDBACK_ENDPOINT)) {926          return { ok: false, error: "invalid feedback endpoint" };927        }928        try {929          const res = await fetch(FEEDBACK_ENDPOINT, {930            method: "POST",931            headers: { "Content-Type": "application/json" },932            body: JSON.stringify({ category, message, version, browser, source: "peach-extension" }),933          });934          return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };935        } catch (err) {936          return { ok: false, error: err instanceof Error ? err.message : "network error" };937        }938      }939      default:940        return { ok: false, error: "unknown message type" };941    }942  } catch (err) {943    return {944      ok: false,945      error: err instanceof Error ? err.message : "operation failed",946    };947  }948}949950/** Notify all content scripts that the vault just became available. */951function broadcastToContentScripts(message: { type: string }): void {952  if (Capacitor.isNativePlatform() || !chrome.tabs?.query) return;953  chrome.tabs.query({}, (tabs) => {954    for (const tab of tabs) {955      if (tab.id !== undefined) {956        chrome.tabs.sendMessage(tab.id, message).catch(() => {957          // Tab may not have a content script — silently ignore958        });959      }960    }961  });962}963964function shouldRefreshAutoLock(type: MessageType): boolean {965  return (966    type !== "HAS_VAULT" &&967    type !== "IS_UNLOCKED" &&968    type !== "GET_VAULT_STATUS" &&969    type !== "LOCK" &&970    type !== "UPDATE_SETTINGS" &&971    type !== "GET_PENDING_PASSKEY" &&972    type !== "GET_PASSKEY_PROVIDER_STATE" &&973    type !== "DECLINE_CARD_SAVE" &&974    type !== "IS_CARD_DECLINED" &&975    type !== "SUBMIT_FEEDBACK"976  );977}978979function isAllowedCanaryWebhookUrl(value: string): boolean {980  try {981    const url = new URL(value);982    if (url.protocol !== "https:") return false;983984    const hostname = url.hostname.toLowerCase();985    if (986      hostname === "localhost" ||987      hostname.endsWith(".localhost") ||988      isPrivateIpv4(hostname) ||989      isPrivateIpv6(hostname)990    ) {991      return false;992    }993994    return true;995  } catch {996    return false;997  }998}9991000function isPrivateIpv4(hostname: string): boolean {1001  if (PRIVATE_IPV4_RANGES.some((range) => hostname.startsWith(range.prefix))) {1002    return true;1003  }10041005  const octets = hostname.split(".").map((part) => Number(part));1006  if (octets.length !== 4 || octets.some((octet) => !Number.isInteger(octet) || octet < 0 || octet > 255)) {1007    return false;1008  }10091010  return octets[0] === 172 && octets[1] >= 16 && octets[1] <= 31;1011}10121013function isPrivateIpv6(hostname: string): boolean {1014  const normalized = hostname.replace(/^\[|\]$/g, "").toLowerCase();1015  return (1016    normalized === "::1" ||1017    normalized.startsWith("fc") ||1018    normalized.startsWith("fd") ||1019    normalized.startsWith("fe80:")1020  );1021}