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  VaultEntry,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    chrome.runtime65      .sendMessage({ type: "PRO_GATE_TRIGGERED", payload: { feature } })66      .catch(() => {67        // Popup may be closed — the gate signal is best-effort.68      });69  } else {70    // Background trigger (e.g. passive sync initiation) — no popup is open.71    // Queue a notice so the next popup open shows a soft banner instead of72    // silently failing.73    if (chrome.storage.session) {74      chrome.storage.session75        .set({ pendingProNotice: { feature, triggeredAt: Date.now() } })76        .catch(() => {});77    }78  }7980  return { allowed: false };81}8283// ---------------------------------------------------------------------------84// Local device name. Peers see this string in PAIR_REQUEST / PAIR_ACCEPT and85// next to the device in their paired-devices list. Default to a platform-aware86// fallback when the user hasn't set one explicitly.87const DEVICE_NAME_KEY = "peach_device_name";8889async function getLocalDeviceName(): Promise<string> {90  try {91    const stored = await chrome.storage.local.get(DEVICE_NAME_KEY);92    const value = (stored as Record<string, string | undefined>)[DEVICE_NAME_KEY];93    if (typeof value === "string" && value.trim()) return value.trim();94  } catch {95    // fall through to default96  }97  return "Peach";98}99100// ---------------------------------------------------------------------------101// 6-digit code pairing.102103const PAIRING_TOKEN_TTL_MS = 5 * 60 * 1000;104105106function generateSixDigitToken(): string {107  // crypto.getRandomValues, not Math.random — the token is the only secret108  // protecting the pairing window from a same-LAN attacker. 6 decimal digits109  // is 1 in 1,000,000; combined with a 5-minute TTL and pairing-mode gating110  // on the responder this is the right tradeoff between UX and security.111  const buf = new Uint32Array(1);112  crypto.getRandomValues(buf);113  const value = buf[0] % 1_000_000;114  return value.toString().padStart(6, "0");115}116117// ---------------------------------------------------------------------------118// Peer discovery glue (Phase 7 popup pairing flow).119120const PRIVATE_IPV4_RANGES = [121  { prefix: "10." },122  { prefix: "127." },123  { prefix: "169.254." },124  { prefix: "192.168." },125];126127// Empty disables network submission while the UI continues to function as a128// no-op (the handler returns ok:true without calling fetch). When set, the129// URL is validated by `isAllowedCanaryWebhookUrl` before any request, so the130// same private-IP/HTTPS rules that gate canary webhooks apply here.131const FEEDBACK_ENDPOINT = "";132133export function setupMessageHandler(): void {134  chrome.runtime.onMessage.addListener(135    (msg: unknown, sender, sendResponse) => {136      if (!isMessage(msg)) {137        sendResponse({ ok: false, error: "invalid message" });138        return true;139      }140      handleMessage(msg, sender)141        .then(sendResponse)142        .catch((err) =>143          sendResponse({144            ok: false,145            error: err instanceof Error ? err.message : String(err),146          })147        );148      return true;149    }150  );151}152153function isMessage(m: unknown): m is Message {154  return typeof m === "object" && m !== null && "type" in m;155}156157export async function handleMessage(158  msg: Message,159  sender: Partial<chrome.runtime.MessageSender> = {}160): Promise<MessageResponse> {161  try {162    // Validate sender — only allow messages from our extension pages/scripts.163    // `sender.id` is undefined for messages originating from extension UI164    // (popup/options), which is legitimate; reject only when it is defined165    // and does not match our extension id.166    if (167      sender.id !== undefined &&168      sender.id !== chrome.runtime.id169    ) {170      return { ok: false, error: "invalid sender" };171    }172173    if (shouldRefreshAutoLock(msg.type) && vault.isUnlocked()) {174      touchAutoLock();175    }176177    switch (msg.type) {178      case "CREATE_VAULT": {179        const { password } = msg.payload as { password: string };180        await vault.createVault(password);181        await setupAutoLock();182        broadcastToContentScripts({ type: "VAULT_UNLOCKED" });183        return { ok: true };184      }185      case "UNLOCK": {186        const { password } = msg.payload as { password: string };187        const ok = await vault.unlock(password);188        if (ok) {189          await setupAutoLock();190          broadcastToContentScripts({ type: "VAULT_UNLOCKED" });191        }192        return { ok };193      }194      case "LOCK":195        vault.lock();196        return { ok: true };197      case "IS_UNLOCKED":198        return { ok: true, data: vault.isUnlocked() };199      case "GET_VAULT_STATUS":200        return { ok: true, unlocked: vault.isUnlocked() };201      case "HAS_VAULT":202        return { ok: true, data: await vault.hasVault() };203      case "GET_ENTRIES":204        return { ok: true, data: vault.getEntries() };205      case "ADD_ENTRY": {206        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };207        const entry = await vault.addEntry(msg.payload as any);208        return { ok: true, data: entry };209      }210      case "BATCH_ADD_ENTRIES": {211        const { entries } = msg.payload as { entries: any[] };212        const added = await vault.batchAddEntries(entries);213        return { ok: true, data: added };214      }215      case "RESTORE_ENTRIES": {216        const { entries, mode, settings } = msg.payload as {217          entries: any[];218          mode: "replace" | "merge";219          settings?: vault.VaultSettings;220        };221        const summary = await vault.restoreEntries(entries, mode);222        if (settings && typeof settings === "object") {223          await vault.updateSettings(settings);224        }225        return { ok: true, data: summary };226      }227      case "CLEAR_VAULT_ENTRIES": {228        await vault.clearVaultEntries("REPLACE_ALL");229        return { ok: true };230      }231      case "GET_VAULT_HISTORY": {232        const snapshots = await vault.getVaultHistory();233        return { ok: true, data: snapshots };234      }235      case "RESTORE_VAULT_SNAPSHOT": {236        const { snapshotId } = msg.payload as { snapshotId: string };237        const result = await vault.restoreVaultSnapshot(snapshotId);238        if (!result.ok) return { ok: false, error: result.error };239        broadcastToContentScripts({ type: "VAULT_LOCKED" });240        return { ok: true };241      }242      case "COUNT_DUPLICATES": {243        return { ok: true, data: vault.countDuplicates() };244      }245      case "DEDUPLICATE_ENTRIES": {246        const removed = await vault.deduplicateEntries();247        return { ok: true, data: removed };248      }249      case "UPDATE_ENTRY": {250        const { id, patch } = msg.payload as any;251        await vault.updateEntry(id, patch);252        return { ok: true };253      }254      case "ADD_ADDITIONAL_URL": {255        const { id, url } = msg.payload as { id: string; url: string };256        const trimmed = typeof url === "string" ? url.trim() : "";257        if (!trimmed) return { ok: false, error: "url required" };258        const existing = vault.getEntryById(id);259        if (!existing) return { ok: false, error: "entry not found" };260        if (existing.type !== "login") return { ok: false, error: "login entries only" };261        const merged = [...(existing.additionalUrls ?? []), trimmed];262        await vault.updateEntry(id, { additionalUrls: merged });263        return { ok: true };264      }265      case "DELETE_ENTRY": {266        const { id } = msg.payload as { id: string };267        await vault.deleteEntry(id);268        return { ok: true };269      }270      case "GET_DELETED_ENTRIES":271        return { ok: true, data: vault.getDeletedEntries() };272      case "RESTORE_ENTRY": {273        const { id } = msg.payload as { id: string };274        await vault.restoreEntry(id);275        return { ok: true };276      }277      case "PURGE_ENTRY": {278        const { id } = msg.payload as { id: string };279        await vault.purgeEntry(id);280        return { ok: true };281      }282      case "PURGE_EXPIRED_TRASH": {283        const { retentionMs } = msg.payload as { retentionMs: number };284        const purged = await vault.purgeExpiredTrash(retentionMs);285        return { ok: true, data: purged };286      }287      case "AUTOFILL_QUERY": {288        if (!vault.isUnlocked()) {289          return { ok: false, error: "VAULT_LOCKED" };290        }291        const { domain, includeAll, kind } = msg.payload as {292          domain: string;293          includeAll?: boolean;294          kind?: "login" | "card";295        };296        // kind="card": return saved cards as compact summaries for the297        // inline card silver platter. Cards are not domain-scoped — every298        // saved card is a candidate on every checkout page — so domain is299        // ignored when kind === "card".300        if (kind === "card") {301          const cards = vault.getEntries().filter((e) => e.type === "card");302          return {303            ok: true,304            data: cards.map((e) => ({305              id: e.id,306              title: e.cardNickname || e.title,307              cardholderName: e.cardholderName,308              last4: e.last4,309              expMonth: e.expMonth,310              expYear: e.expYear,311              network: e.network,312            })),313          };314        }315        // The inline selector fills username+password into a form. Passkey-316        // only entries have no password to fill; sign-in for those goes317        // through the WebAuthn path instead. Filter them out everywhere so318        // the user doesn't see four "GitHub" rows that mostly do nothing.319        // Notes and cards never belonged here either.320        const matches = (321          includeAll322            ? vault323                .getEntries()324                .filter((entry) => entry.type !== "note" && entry.type !== "card")325            : vault.queryDomain(domain)326        ).filter((entry) => !isPasskeyOnly(entry));327        return {328          ok: true,329          data: matches.map((e) =>330            includeAll331              ? {332                  id: e.id,333                  title: e.title,334                  hasPasskey: e.passkey !== undefined,335                }336              : {337                  id: e.id,338                  title: e.title,339                  username: e.username,340                  url: e.url,341                  hasTotp: Boolean(e.totp),342                  hasPasskey: e.passkey !== undefined,343                }344          ),345        };346      }347      case "GET_ENTRY_FOR_FILL": {348        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };349        const { id } = msg.payload as { id: string };350        const entry = vault.getEntryById(id);351        if (!entry) return { ok: false, error: "entry not found" };352        // Passkey-only entries (passkey credential, no password) cannot be353        // filled into a form — sign-in goes through the WebAuthn path. A354        // login that ALSO has a passkey is still fillable for its password.355        if (isPasskeyOnly(entry)) return { ok: false, error: "passkey not fillable" };356        // Strip the passkey credential from the response — content scripts357        // never need the private key, and there's no reason to expose the358        // public credential metadata over the boundary either.359        const { passkey: _strippedPasskey, ...safeEntry } = entry;360        return { ok: true, data: safeEntry };361      }362      case "COPY": {363        const { text, label, alreadyWritten } = msg.payload as {364          text: string;365          label: string;366          alreadyWritten?: boolean;367        };368        await copyToClipboard(text, label, Boolean(alreadyWritten));369        return { ok: true };370      }371      case "CHECK_BREACH": {372        const { password } = msg.payload as { password: string };373        const count = await vault.checkBreach(password);374        return { ok: true, data: count };375      }376      case "CHECK_ALL_BREACHES": {377        const allEntries = vault.getEntries();378        const results: Record<string, number> = {};379        for (const entry of allEntries) {380          if (entry.type === "note") continue;381          if (!entry.password) continue;382          results[entry.id] = await vault.checkBreach(entry.password);383          // Small delay — be a good citizen to the HIBP API384          await new Promise((r) => setTimeout(r, 200));385        }386        // Persist any non-zero counts back to entries387        for (const [id, count] of Object.entries(results)) {388          const entry = vault.getEntryById(id);389          if (entry && (entry.breach ?? 0) !== count) {390            await vault.updateEntry(id, { breach: count > 0 ? count : undefined });391          }392        }393        return { ok: true, data: results };394      }395      case "GET_SETTINGS":396        return { ok: true, data: await vault.ensureSettingsLoaded() };397      case "UPDATE_SETTINGS": {398        const patch = msg.payload as Record<string, unknown>;399        await vault.updateSettings(patch as any);400        if (typeof patch.autoLockMinutes === "number") {401          await setupAutoLock();402          if (vault.isUnlocked()) touchAutoLock();403        }404        return { ok: true };405      }406      case "GET_PENDING_PASSKEY":407        return { ok: true, data: await getPendingPasskeyRequest() };408      case "APPROVE_PASSKEY": {409        const { requestId } = msg.payload as { requestId: number };410        await resolvePendingPasskeyRequest(requestId, true);411        return { ok: true };412      }413      case "DENY_PASSKEY": {414        const { requestId } = msg.payload as { requestId: number };415        await resolvePendingPasskeyRequest(requestId, false);416        return { ok: true };417      }418      case "GET_PASSKEYS":419        return {420          ok: true,421          data: vault.getEntries().filter((entry) => entry.passkey !== undefined),422        };423      case "DELETE_PASSKEY": {424        const { id } = msg.payload as { id: string };425        await vault.deleteEntry(id);426        return { ok: true };427      }428      case "GET_PASSKEY_PROVIDER_STATE":429        return { ok: true, data: await getPasskeyProviderState() };430      case "SET_PASSKEY_PROVIDER_ENABLED": {431        const { enabled } = msg.payload as { enabled: boolean };432        // Disabling is always free; gating fires only when a free user is433        // trying to turn passkey interception on.434        if (enabled) {435          const gate = await requirePro("passkeys");436          if (!gate.allowed) return { ok: false, error: "pro_required" };437        }438        return { ok: true, data: await setPasskeyProviderEnabled(enabled) };439      }440      case "FIRE_CANARY_PING": {441        const { webhookUrl, entryTitle, trigger } = msg.payload as {442          webhookUrl: string;443          entryTitle: string;444          trigger: "password_copied" | "username_copied" | "autofilled" | "submitted" | "test";445        };446        if (!isAllowedCanaryWebhookUrl(webhookUrl)) {447          return { ok: false, error: "invalid webhook url" };448        }449        const body = JSON.stringify({450          event: trigger === "test" ? "peach_canary_test" : "peach_canary_accessed",451          entry: entryTitle,452          trigger,453          timestamp: new Date().toISOString(),454          source: "peach-extension",455        });456        if (trigger === "test") {457          // Permitted outbound fetch: user-configured canary alert endpoint458          // (validated by isAllowedCanaryWebhookUrl above). This is the459          // only non-HIBP outbound call in the extension — see460          // Projects.md §3.7. Test pings are awaited so the UI can show461          // success/failure.462          try {463            const res = await fetch(webhookUrl, {464              method: "POST",465              headers: { "Content-Type": "application/json" },466              body,467            });468            return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };469          } catch (err) {470            return { ok: false, error: err instanceof Error ? err.message : "network error" };471          }472        }473        // Non-test triggers are fire-and-forget474        fetch(webhookUrl, {475          method: "POST",476          headers: { "Content-Type": "application/json" },477          body,478        }).catch(() => {});479        return { ok: true };480      }481      case "ACTIVATE_LICENSE": {482        const { key } = msg.payload as { key: string };483        const licenseInfo = await activateLicense(key);484        return { ok: true, data: licenseInfo };485      }486      case "GET_LICENSE": {487        const licenseInfo = await getLicenseInfo();488        return { ok: true, data: licenseInfo };489      }490      case "GET_LICENSE_KEY": {491        const key = await getLicenseKey();492        return { ok: true, data: key };493      }494      case "DEACTIVATE_LICENSE": {495        await deactivateLicense();496        return { ok: true };497      }498      case "SHOULD_PLAY_CELEBRATION": {499        const should = await shouldPlayCelebration();500        return { ok: true, data: should };501      }502      case "MARK_CELEBRATION_PLAYED": {503        await markCelebrationPlayed();504        return { ok: true };505      }506      case "OPEN_PRO_GATE": {507        // Content script requests: open popup and navigate to License section.508        const { feature } = (msg.payload ?? {}) as { feature?: string };509        if (chrome.storage.session) {510          await chrome.storage.session.set({ pendingProGate: { feature: feature ?? "passkeys" } });511        }512        try { await chrome.action.openPopup(); } catch { /* badge fallback */ }513        return { ok: true };514      }515      case "GET_IDENTITIES": {516        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };517        return { ok: true, data: vault.getIdentities() };518      }519      case "GET_ADVANCED_HEALTH_REPORT": {520        const gate = await requirePro("advanced_health");521        if (!gate.allowed) return { ok: false, error: "pro_required" };522        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };523        const report = await buildAdvancedHealthReport(vault.getEntries());524        return { ok: true, data: report };525      }526      case "INITIATE_PASSWORD_CHANGE": {527        const gate = await requirePro("smart_password_change");528        if (!gate.allowed) return { ok: false, error: "pro_required" };529        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };530        const { id } = msg.payload as { id: string };531        const entry = vault.getEntryById(id);532        if (!entry) return { ok: false, error: "entry not found" };533        const url = resolveResetUrl(entry);534        if (!url) return { ok: false, error: "no reset url" };535        try {536          await chrome.tabs.create({ url });537          return { ok: true, data: { url } };538        } catch (err) {539          return {540            ok: false,541            error: err instanceof Error ? err.message : "failed to open tab",542          };543        }544      }545      case "IS_DURESS_ENABLED": {546        const enabled = await vault.isDuressEnabled();547        return { ok: true, data: enabled };548      }549      case "SETUP_DURESS": {550        const { duressPassword } = msg.payload as { duressPassword: string };551        await vault.setupDuress(duressPassword);552        return { ok: true };553      }554      case "DISABLE_DURESS": {555        await vault.disableDuress();556        return { ok: true };557      }558      case "VERIFY_MAIN_PASSWORD": {559        const { password } = msg.payload as { password: string };560        const ok = await vault.verifyMainPassword(password);561        return { ok: true, data: ok };562      }563      case "CHANGE_PASSWORD": {564        const { currentPassword, newPassword } = msg.payload as {565          currentPassword: string;566          newPassword: string;567        };568        const changed = await vault.changePassword(currentPassword, newPassword);569        return changed570          ? { ok: true }571          : { ok: false, error: "incorrect current password" };572      }573      case "GET_SITE_PASSWORD_POLICY": {574        const [tab] = await chrome.tabs.query({ active: true, currentWindow: true });575        if (!tab?.id) return { ok: true, data: null };576        try {577          const response = await chrome.tabs.sendMessage(tab.id, {578            type: "GET_SITE_PASSWORD_POLICY",579          });580          return (response as MessageResponse) ?? { ok: true, data: null };581        } catch {582          return { ok: true, data: null };583        }584      }585      case "GET_SYNC_STATE": {586        const { getPairedDevices, getTrustedNetworks } = await import('./sync-storage');587        const { isOnTailscale } = await import('./sync-network');588        const { isProUser } = await import('./license');589        const { storageGet } = await import('../shared/storage');590        const pairedDevices = await getPairedDevices();591        const trustedNetworks = await getTrustedNetworks();592        const tailscale = await isOnTailscale();593        const pro = await isProUser();594595        let status: SyncStatus = "offline";596        if (tailscale || trustedNetworks.some((n: { isTailscale?: boolean }) => !n.isTailscale)) {597          if (pairedDevices.length === 0) {598            status = "no_peers";599          } else {600            status = "synced";601          }602        } else {603          status = "not_trusted";604        }605606        const lastSyncRaw = await storageGet("peach_last_sync_at");607        const lastSyncParsed = lastSyncRaw ? Number.parseInt(lastSyncRaw, 10) : NaN;608        const lastSyncAt = Number.isFinite(lastSyncParsed) ? lastSyncParsed : undefined;609610        return { ok: true, data: { pairedDevices, trustedNetworks, status, lastSyncAt, isPro: pro } };611      }612      case "TRIGGER_SYNC": {613        const gate = await requirePro("sync");614        if (!gate.allowed) return { ok: false, error: "pro_required" };615        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };616        return { ok: false, error: "no_native_host" };617      }618      case "START_PAIRING": {619        const gate = await requirePro("sync");620        if (!gate.allowed) return { ok: false, error: "pro_required" };621        return { ok: true };622      }623      case "CANCEL_PAIRING": {624        return { ok: true };625      }626      case "ACCEPT_PAIRING": {627        const gate = await requirePro("sync");628        if (!gate.allowed) return { ok: false, error: "pro_required" };629        return { ok: true };630      }631      case "REMOVE_PAIRED_DEVICE": {632        const { deviceId } = msg.payload as { deviceId: string };633        const { removePairedDevice } = await import('./sync-storage');634        await removePairedDevice(deviceId);635        return { ok: true };636      }637      case "REMOVE_TRUSTED_NETWORK": {638        const { ssid, bssid, isTailscale } = msg.payload as any;639        const { removeTrustedNetwork, getTrustedNetworks } = await import('./sync-storage');640        const networks = await getTrustedNetworks();641        const network = networks.find((n: { ssid?: string; bssid?: string; isTailscale?: boolean }) => 642          (isTailscale ? n.isTailscale : n.ssid === ssid) && 643          (!bssid || n.bssid === bssid)644        );645        if (network) {646          await removeTrustedNetwork(network.addedAt);647        }648        return { ok: true };649      }650      case "MARK_NETWORK_TRUSTED": {651        const { addTrustedNetwork } = await import('./sync-storage');652        const { getCurrentNetwork } = await import('./sync-network');653        const network = await getCurrentNetwork();654        await addTrustedNetwork({655          ssid: network.ssid,656          bssid: network.bssid,657          isTailscale: network.isTailscale,658          addedAt: Date.now(),659        });660        return { ok: true };661      }662      case "GET_INCOMING_PAIRING_REQUEST": {663        const { getIncomingPairingRequest } = await import('./sync-storage');664        const request = await getIncomingPairingRequest();665        return { ok: true, data: request };666      }667      case "RESPOND_INCOMING_PAIRING": {668        const { accept } = msg.payload as { accept: boolean };669        const { getIncomingPairingRequest, clearIncomingPairingRequest, addPairedDevice } =670          await import('./sync-storage');671        const request = await getIncomingPairingRequest();672        if (!request) return { ok: false, error: "no_pending_request" };673        if (Date.now() > request.expiresAt) {674          await clearIncomingPairingRequest();675          return { ok: false, error: "expired" };676        }677        await clearIncomingPairingRequest();678        if (accept) {679          await addPairedDevice({680            deviceId: request.publicKeyHex,681            displayName: request.deviceName,682            x25519PublicKey: request.publicKeyHex,683            pairedAt: Date.now(),684            lastSeenAt: Date.now(),685          });686        }687        return { ok: true, data: { accepted: accept, deviceName: request.deviceName } };688      }689      case "START_PEER_DISCOVERY": {690        const gate = await requirePro("sync");691        if (!gate.allowed) return { ok: false, error: "pro_required" };692        return { ok: false, error: "no_native_host" };693      }694      case "STOP_PEER_DISCOVERY": {695        return { ok: true };696      }697      case "START_PAIRING_SERVER": {698        const gate = await requirePro("sync");699        if (!gate.allowed) return { ok: false, error: "pro_required" };700        const token = generateSixDigitToken();701        const expiresAt = Date.now() + PAIRING_TOKEN_TTL_MS;702        const { setActivePairingToken } = await import('./pairing-server-state');703        await setActivePairingToken({ token, expiresAt });704        return { ok: true, data: { token, expiresAt } };705      }706      case "STOP_PAIRING_SERVER": {707        try {708          const { setActivePairingToken } = await import("./pairing-server-state");709          await setActivePairingToken(null);710        } catch { /* best-effort */ }711        return { ok: true };712      }713      case "CONNECT_WITH_CODE": {714        const gate = await requirePro("sync");715        if (!gate.allowed) return { ok: false, error: "pro_required" };716        return { ok: false, error: "no_native_host" };717      }718      case "GET_RECENT_PAIRING": {719        const { consumeRecentPairing } = await import('./pairing-server-state');720        const recent = await consumeRecentPairing();721        return { ok: true, data: recent };722      }723      case "INITIATE_PAIR_WITH_PEER": {724        const gate = await requirePro("sync");725        if (!gate.allowed) return { ok: false, error: "pro_required" };726        return { ok: false, error: "no_native_host" };727      }728      case "DEBUG_INJECT_INCOMING_PAIRING": {729        // Manual E2E rehearsal hook. Inserts a synthetic incoming pairing730        // request into session storage so Phase 7 banner UX can be exercised731        // without a live native host. No Pro gate — this is a no-op in732        // production unless explicitly invoked from a Settings debug action.733        const { deviceName, publicKeyHex } = (msg.payload ?? {}) as {734          deviceName?: string;735          publicKeyHex?: string;736        };737        if (!deviceName || !publicKeyHex) {738          return { ok: false, error: "missing_payload" };739        }740        const { setIncomingPairingRequest } = await import('./sync-storage');741        const now = Date.now();742        await setIncomingPairingRequest({743          deviceName,744          publicKeyHex,745          receivedAt: now,746          expiresAt: now + 60_000,747        });748        return { ok: true };749      }750      case "RESET_SYNC_IDENTITY": {751        const gate = await requirePro("sync");752        if (!gate.allowed) return { ok: false, error: "pro_required" };753        const { getPairedDevices, removePairedDevice } = await import('./sync-storage');754        const devices = await getPairedDevices();755        for (const device of devices) {756          await removePairedDevice(device.deviceId);757        }758        return { ok: true, data: { removedDevices: devices.length, nativePublicKey: null } };759      }760      case "RECORD_MANUAL_SUMMON": {761        const { domain } = msg.payload as { domain: string };762        const settings = vault.getSettings();763        const existing = settings.manualSummonDomains?.[domain];764        const now = Date.now();765        await vault.updateSettings({766          manualSummonDomains: {767            ...settings.manualSummonDomains,768            [domain]: {769              firstSummonedAt: existing?.firstSummonedAt ?? now,770              summonCount: (existing?.summonCount ?? 0) + 1,771              lastSummonedAt: now,772            },773          },774        });775        return { ok: true };776      }777      case "DECLINE_CARD_SAVE": {778        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };779        await vault.declineCardSaveOffer(last4, expMonth, expYear);780        return { ok: true };781      }782      case "IS_CARD_DECLINED": {783        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };784        const declined = await vault.isCardDeclined(last4, expMonth, expYear);785        return { ok: true, data: declined };786      }787      case "INITIATE_FIREFOX_PASSKEY_CREATE": {788        const { rpId, rpName, userName, userDisplayName } = (msg.payload ?? {}) as {789          rpId?: string;790          rpName?: string;791          userName?: string;792          userDisplayName?: string;793        };794        if (!rpId || !userName) return { ok: false, error: "rpId and userName required" };795        return await initiateFirefoxPasskeyCreate({796          rpId,797          rpName: rpName ?? rpId,798          userName,799          userDisplayName,800        });801      }802803      case "COMPLETE_FIREFOX_PASSKEY_CREATE": {804        const payload = msg.payload as Parameters<typeof completeFirefoxPasskeyCreate>[0] | undefined;805        if (!payload) return { ok: false, error: "missing payload" };806        return await completeFirefoxPasskeyCreate(payload);807      }808809      case "PASSKEY_OFFER_DECLINE": {810        const { domain } = (msg.payload ?? {}) as { domain?: string };811        if (!domain) return { ok: false, error: "domain required" };812        await recordPasskeyOfferDecline(domain);813        return { ok: true };814      }815816      case "GET_PASSKEY_OFFER_DECLINED": {817        const { domain } = (msg.payload ?? {}) as { domain?: string };818        if (!domain) return { ok: false, error: "domain required" };819        return { ok: true, data: await isPasskeyOfferDeclined(domain) };820      }821822      case "PASSKEY_HAS_CREDENTIALS": {823        const payload = msg.payload as {824          rpId?: string;825          allowCredentials?: Array<{ id: string; type?: string }>;826        } | undefined;827        if (!payload?.rpId) return { ok: false, error: "rpId required" };828        return await handlePasskeyHasCredentials({829          rpId: payload.rpId,830          allowCredentials: payload.allowCredentials ?? [],831        });832      }833834      case "PASSKEY_CREATE": {835        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyCreate>[0] | undefined;836        if (!payload?.rpId || !payload?.userName) {837          return { ok: false, error: "rpId and userName required" };838        }839        return await handleFirefoxPasskeyCreate(payload);840      }841842      case "PASSKEY_GET": {843        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyGet>[0] | undefined;844        if (!payload?.rpId) return { ok: false, error: "rpId required" };845        return await handleFirefoxPasskeyGet(payload);846      }847848      case "GET_PASSKEY_FOR_DOMAIN": {849        const { domain } = (msg.payload ?? {}) as { domain?: string };850        if (!domain) return { ok: false, error: "domain required" };851        if (!vault.isUnlocked()) return { ok: true, data: null };852        const match = vault853          .getEntries()854          .find((entry) => entry.passkey?.rpId === domain);855        if (!match || !match.passkey) return { ok: true, data: null };856        // Slim shape — only the fields State 11 needs. Never expose private857        // key material, even though this is locked behind isUnlocked.858        return {859          ok: true,860          data: {861            rpId: match.passkey.rpId,862            userName: match.passkey.userName,863            browser: match.passkey.browser,864          },865        };866      }867868      case "DESTROY_VAULT": {869        // Irreversible by design. Lock zeroes the derived key + in-memory entries;870        // storage.local.clear() wipes every Peach key (slots, settings, license,871        // onboarded flag, history, sync state, declined cards, recall, etc.);872        // session.clear() wipes pending passkey requests + pro-notice queues.873        // Caller (Panic.tsx) handles UI navigation back to onboarding.874        vault.lock();875        await storageClear();876        await vault.clearVaultHistory();877        if (chrome.storage.session) {878          await chrome.storage.session.clear();879        }880        return { ok: true };881      }882883      case "SUBMIT_FEEDBACK": {884        const { category, message, version, browser } = msg.payload as {885          category: string;886          message: string;887          version: string;888          browser: string;889        };890        if (!message.trim()) return { ok: false, error: "message is empty" };891        if (!FEEDBACK_ENDPOINT) return { ok: true };892        if (!isAllowedCanaryWebhookUrl(FEEDBACK_ENDPOINT)) {893          return { ok: false, error: "invalid feedback endpoint" };894        }895        try {896          const res = await fetch(FEEDBACK_ENDPOINT, {897            method: "POST",898            headers: { "Content-Type": "application/json" },899            body: JSON.stringify({ category, message, version, browser, source: "peach-extension" }),900          });901          return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };902        } catch (err) {903          return { ok: false, error: err instanceof Error ? err.message : "network error" };904        }905      }906      case "TRIGGER_SYNC": {907        if (isNativePlatform()) {908          bridge?.ensureServerRunning?.();909          return { ok: true, data: { syncedCount: 0, mode: "server" as const } };910        }911        return await desktopTriggerSync({ getLastKnownIp: () => null });912      }913      // Android-only: biometric unlock with pre-derived key.914      case "UNLOCK_WITH_KEY": {915        const { masterKeyHex } = msg.payload as { masterKeyHex: string };916        if (!isNativePlatform()) {917          return { ok: false, error: "desktop_only_uses_password" };918        }919        try {920          const result = await vault.unlockWithKey(masterKeyHex);921          if (result.ok) await publishInMemoryVault(result.entries);922          return { ok: result.ok, data: result.ok ? { entries: result.entries } : undefined, error: result.ok ? undefined : result.error };923        } catch {924          return { ok: false, error: "invalid_key" };925        }926      }927      // Android: returns current in-memory derived key as hex. Used by biometric enable flow.928      case "GET_DERIVED_KEY": {929        if (!isNativePlatform()) {930          return { ok: false, error: "android_only" };931        }932        if (!vault.isUnlocked()) {933          return { ok: false, error: "vault_locked" };934        }935        return { ok: true, data: { masterKeyHex: vault.getDerivedKeyHex() } };936      }937      // Android: scanned a QR containing a desktop pairing token.938      case "SCAN_PAIRING_QR": {939        if (!isNativePlatform()) {940          return { ok: false, error: "android_only" };941        }942        const { token } = msg.payload as { token: string };943        bridge?.startPairingSession?.({ token });944        return { ok: true };945      }946      // Android: returns the phone's WiFi IP address.947      case "GET_LOCAL_IP": {948        if (!isNativePlatform()) {949          return { ok: false, error: "android_only" };950        }951        const { ip } = (await bridge?.getLocalIp?.()) ?? { ip: "" };952        return { ok: true, data: { ip } };953      }954      // Desktop: generates a pairing token and starts the subnet scan for QR pairing.955      case "START_PAIRING_SERVER": {956        if (isNativePlatform()) {957          return { ok: false, error: "desktop_only" };958        }959        const arr = new Uint32Array(1);960        crypto.getRandomValues(arr);961        const token = String(100000 + (arr[0] % 900000));962        activeDesktopPairingToken = token;963        activeDesktopPairingExpiry = Date.now() + 5 * 60 * 1000;964        startSubnetScan(token, { getLocalAddress: () => null });965        return { ok: true, data: { token, expiresIn: 300 } };966      }967      case "GET_IDENTITY_SUGGESTIONS": {968        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };969        const entries = vault.getEntries();970        const suggestions = buildIdentitySuggestions(entries);971        return { ok: true, data: { suggestions } };972      }973      case "POPULATE_INLINE_VAULT": {974        if (!isNativePlatform()) return { ok: false };975        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };976        const entries = vault.getEntries();977        await publishInMemoryVault(entries);978        return { ok: true };979      }980      default:981        return { ok: false, error: "unknown message type" };982    }983  } catch (err) {984    return {985      ok: false,986      error: err instanceof Error ? err.message : "operation failed",987    };988  }989}990991// --- Mobile platform helpers ---992993// Desktop: triggers sync for all paired devices.994async function desktopTriggerSync(deps: {995  getLastKnownIp: () => string | null;996}): Promise<{ ok: true; syncedCount: number } | { ok: false; error: string }> {997  const ip = deps.getLastKnownIp();998  if (!ip) return { ok: false, error: "no_paired_devices" };999  return { ok: true, syncedCount: 0 };1000}10011002// Desktop: starts background subnet scan for QR pairing.1003function startSubnetScan(1004  token: string,1005  _deps: {1006    getLocalAddress: () => string | null;1007  }1008): void {1009  // TODO: implement subnet scan and WebSocket pairing server1010}10111012// Android: populates the in-memory vault used by PeachAutofillService.1013async function publishInMemoryVault(entries: VaultEntry[]): Promise<void> {1014  // TODO: wire up to autofill in-memory store (exists in Android, not here)1015}10161017// Returns all emails and usernames from the vault, deduped and sorted by frequency.1018function buildIdentitySuggestions(1019  entries: VaultEntry[],1020): Array<{ email: string; username: string; count: number }> {1021  const map = new Map<string, number>();1022  for (const entry of entries) {1023    if (entry.username) map.set(entry.username, (map.get(entry.username) ?? 0) + 1);1024  }1025  return Array.from(map.entries())1026    .sort((a, b) => b[1] - a[1])1027    .map(([username, count]) => ({ email: username, username, count }));1028}10291030// Mobile bridge — runtime check to avoid importing Capacitor at the top level.1031// eslint-disable-next-line @typescript-eslint/no-explicit-any1032const bridge = (typeof (globalThis as any).Capacitor !== "undefined")1033  ? (globalThis as any).Capacitor.Plugins.SyncPlugin1034  : null;10351036// eslint-disable-next-line @typescript-eslint/no-explicit-any1037const isNativePlatform = (): boolean => typeof (globalThis as any).Capacitor !== "undefined" && (globalThis as any).isNativePlatform();10381039let activeDesktopPairingToken: string | null = null;1040let activeDesktopPairingExpiry = 0;10411042/** Notify all content scripts that the vault just became available. */1043function broadcastToContentScripts(message: { type: string }): void {1044  if (!chrome.tabs?.query) return;1045  chrome.tabs.query({}, (tabs) => {1046    for (const tab of tabs) {1047      if (tab.id !== undefined) {1048        chrome.tabs.sendMessage(tab.id, message).catch(() => {1049          // Tab may not have a content script — silently ignore1050        });1051      }1052    }1053  });1054}10551056function shouldRefreshAutoLock(type: MessageType): boolean {1057  return (1058    type !== "HAS_VAULT" &&1059    type !== "IS_UNLOCKED" &&1060    type !== "GET_VAULT_STATUS" &&1061    type !== "LOCK" &&1062    type !== "UPDATE_SETTINGS" &&1063    type !== "GET_PENDING_PASSKEY" &&1064    type !== "GET_PASSKEY_PROVIDER_STATE" &&1065    type !== "DECLINE_CARD_SAVE" &&1066    type !== "IS_CARD_DECLINED" &&1067    type !== "SUBMIT_FEEDBACK"1068  );1069}10701071function isAllowedCanaryWebhookUrl(value: string): boolean {1072  try {1073    const url = new URL(value);1074    if (url.protocol !== "https:") return false;10751076    const hostname = url.hostname.toLowerCase();1077    if (1078      hostname === "localhost" ||1079      hostname.endsWith(".localhost") ||1080      isPrivateIpv4(hostname) ||1081      isPrivateIpv6(hostname)1082    ) {1083      return false;1084    }10851086    return true;1087  } catch {1088    return false;1089  }1090}10911092function isPrivateIpv4(hostname: string): boolean {1093  if (PRIVATE_IPV4_RANGES.some((range) => hostname.startsWith(range.prefix))) {1094    return true;1095  }10961097  const octets = hostname.split(".").map((part) => Number(part));1098  if (octets.length !== 4 || octets.some((octet) => !Number.isInteger(octet) || octet < 0 || octet > 255)) {1099    return false;1100  }11011102  return octets[0] === 172 && octets[1] >= 16 && octets[1] <= 31;1103}11041105function isPrivateIpv6(hostname: string): boolean {1106  const normalized = hostname.replace(/^\[|\]$/g, "").toLowerCase();1107  return (1108    normalized === "::1" ||1109    normalized.startsWith("fc") ||1110    normalized.startsWith("fd") ||1111    normalized.startsWith("fe80:")1112  );1113}