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 "VALIDATE_RECOVERY_WORDS": {195        const { words } = msg.payload as { words: string[] };196        const { findInvalidWords } = await import("../shared/recovery-words");197        const invalid = findInvalidWords(words);198        return { ok: true, data: { valid: invalid.length === 0, invalid } };199      }200      case "GET_RECOVERY_WORDS": {201        // Must be unlocked and have recovery set up (vault must be v2.12+).202        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };203        try {204          const words = await vault.getRecoveryWords();205          return { ok: true, data: words };206        } catch (e) {207          // pre-v2.12 vault that hasn't migrated208          return { ok: false, error: "recovery_not_setup" };209        }210      }211      case "RECOVER_WITH_WORDS": {212        // User has lost their password but has their 12 recovery words.213        // We: (1) validate the words, (2) re-encrypt vault with new password.214        const { words, newPassword } = msg.payload as {215          words: string[];216          newPassword: string;217        };218        const stored = await vault.loadSlotA();219        if (!stored) return { ok: false, error: "no vault" };220        if (!stored.recovery_salt || !stored.recovery_wrapped_root_key) {221          return { ok: false, error: "recovery_not_setup" };222        }223        // Unwrap the root key from the recovery escrow.224        try {225          await vault.unwrapRootKeyForRecovery(226            stored.recovery_wrapped_root_key,227            stored.recovery_nonce ?? "",228            stored.recovery_tag ?? "",229            stored.recovery_salt,230            words231          );232        } catch {233          return { ok: false, error: "invalid_recovery_words" };234        }235        // Re-key: derive fresh salt + key from new password.236        const newSalt = vault.generateSalt();237        const newKey = await vault.deriveKey(newPassword, newSalt);238        // Re-wrap root key under the new password's derived key so the same239        // recovery words continue to work after the password change.240        await vault.rewrapRootKeyForPassword(newKey, newSalt);241        // Re-encrypt vault entries with the new key.242        await vault.changePasswordWithNewKey(newSalt, newKey);243        await setupAutoLock();244        broadcastToContentScripts({ type: "VAULT_UNLOCKED" });245        return { ok: true };246      }247      case "LOCK":248        vault.lock();249        return { ok: true };250      case "IS_UNLOCKED":251        return { ok: true, data: vault.isUnlocked() };252      case "GET_VAULT_STATUS":253        return { ok: true, unlocked: vault.isUnlocked() };254      case "HAS_VAULT":255        return { ok: true, data: await vault.hasVault() };256      case "GET_ENTRIES":257        return { ok: true, data: vault.getEntries() };258      case "ADD_ENTRY": {259        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };260        const entry = await vault.addEntry(msg.payload as any);261        return { ok: true, data: entry };262      }263      case "BATCH_ADD_ENTRIES": {264        const { entries } = msg.payload as { entries: any[] };265        const added = await vault.batchAddEntries(entries);266        return { ok: true, data: added };267      }268      case "RESTORE_ENTRIES": {269        const { entries, mode, settings } = msg.payload as {270          entries: any[];271          mode: "replace" | "merge";272          settings?: vault.VaultSettings;273        };274        const summary = await vault.restoreEntries(entries, mode);275        if (settings && typeof settings === "object") {276          await vault.updateSettings(settings);277        }278        return { ok: true, data: summary };279      }280      case "CLEAR_VAULT_ENTRIES": {281        await vault.clearVaultEntries("REPLACE_ALL");282        return { ok: true };283      }284      case "GET_VAULT_HISTORY": {285        const snapshots = await vault.getVaultHistory();286        return { ok: true, data: snapshots };287      }288      case "RESTORE_VAULT_SNAPSHOT": {289        const { snapshotId } = msg.payload as { snapshotId: string };290        const result = await vault.restoreVaultSnapshot(snapshotId);291        if (!result.ok) return { ok: false, error: result.error };292        broadcastToContentScripts({ type: "VAULT_LOCKED" });293        return { ok: true };294      }295      case "COUNT_DUPLICATES": {296        return { ok: true, data: vault.countDuplicates() };297      }298      case "DEDUPLICATE_ENTRIES": {299        const removed = await vault.deduplicateEntries();300        return { ok: true, data: removed };301      }302      case "UPDATE_ENTRY": {303        const { id, patch } = msg.payload as any;304        await vault.updateEntry(id, patch);305        return { ok: true };306      }307      case "ADD_ADDITIONAL_URL": {308        const { id, url } = msg.payload as { id: string; url: string };309        const trimmed = typeof url === "string" ? url.trim() : "";310        if (!trimmed) return { ok: false, error: "url required" };311        const existing = vault.getEntryById(id);312        if (!existing) return { ok: false, error: "entry not found" };313        if (existing.type !== "login") return { ok: false, error: "login entries only" };314        const merged = [...(existing.additionalUrls ?? []), trimmed];315        await vault.updateEntry(id, { additionalUrls: merged });316        return { ok: true };317      }318      case "DELETE_ENTRY": {319        const { id } = msg.payload as { id: string };320        await vault.deleteEntry(id);321        return { ok: true };322      }323      case "GET_DELETED_ENTRIES":324        return { ok: true, data: vault.getDeletedEntries() };325      case "RESTORE_ENTRY": {326        const { id } = msg.payload as { id: string };327        await vault.restoreEntry(id);328        return { ok: true };329      }330      case "PURGE_ENTRY": {331        const { id } = msg.payload as { id: string };332        await vault.purgeEntry(id);333        return { ok: true };334      }335      case "PURGE_EXPIRED_TRASH": {336        const { retentionMs } = msg.payload as { retentionMs: number };337        const purged = await vault.purgeExpiredTrash(retentionMs);338        return { ok: true, data: purged };339      }340      case "AUTOFILL_QUERY": {341        if (!vault.isUnlocked()) {342          return { ok: false, error: "VAULT_LOCKED" };343        }344        const { domain, includeAll, kind } = msg.payload as {345          domain: string;346          includeAll?: boolean;347          kind?: "login" | "card";348        };349        // kind="card": return saved cards as compact summaries for the350        // inline card silver platter. Cards are not domain-scoped — every351        // saved card is a candidate on every checkout page — so domain is352        // ignored when kind === "card".353        if (kind === "card") {354          const cards = vault.getEntries().filter((e) => e.type === "card");355          return {356            ok: true,357            data: cards.map((e) => ({358              id: e.id,359              title: e.cardNickname || e.title,360              cardholderName: e.cardholderName,361              last4: e.last4,362              expMonth: e.expMonth,363              expYear: e.expYear,364              network: e.network,365            })),366          };367        }368        // The inline selector fills username+password into a form. Passkey-369        // only entries have no password to fill; sign-in for those goes370        // through the WebAuthn path instead. Filter them out everywhere so371        // the user doesn't see four "GitHub" rows that mostly do nothing.372        // Notes and cards never belonged here either.373        const matches = (374          includeAll375            ? vault376                .getEntries()377                .filter((entry) => entry.type !== "note" && entry.type !== "card")378            : vault.queryDomain(domain)379        ).filter((entry) => !isPasskeyOnly(entry));380        return {381          ok: true,382          data: matches.map((e) =>383            includeAll384              ? {385                  id: e.id,386                  title: e.title,387                  hasPasskey: e.passkey !== undefined,388                }389              : {390                  id: e.id,391                  title: e.title,392                  username: e.username,393                  url: e.url,394                  hasTotp: Boolean(e.totp),395                  hasPasskey: e.passkey !== undefined,396                }397          ),398        };399      }400      case "GET_ENTRY_FOR_FILL": {401        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };402        const { id } = msg.payload as { id: string };403        const entry = vault.getEntryById(id);404        if (!entry) return { ok: false, error: "entry not found" };405        // Passkey-only entries (passkey credential, no password) cannot be406        // filled into a form — sign-in goes through the WebAuthn path. A407        // login that ALSO has a passkey is still fillable for its password.408        if (isPasskeyOnly(entry)) return { ok: false, error: "passkey not fillable" };409        // Strip the passkey credential from the response — content scripts410        // never need the private key, and there's no reason to expose the411        // public credential metadata over the boundary either.412        const { passkey: _strippedPasskey, ...safeEntry } = entry;413        return { ok: true, data: safeEntry };414      }415      case "COPY": {416        const { text, label, alreadyWritten } = msg.payload as {417          text: string;418          label: string;419          alreadyWritten?: boolean;420        };421        await copyToClipboard(text, label, Boolean(alreadyWritten));422        return { ok: true };423      }424      case "CHECK_BREACH": {425        const { password } = msg.payload as { password: string };426        const count = await vault.checkBreach(password);427        return { ok: true, data: count };428      }429      case "CHECK_ALL_BREACHES": {430        const allEntries = vault.getEntries();431        const results: Record<string, number> = {};432        for (const entry of allEntries) {433          if (entry.type === "note") continue;434          if (!entry.password) continue;435          results[entry.id] = await vault.checkBreach(entry.password);436          // Small delay — be a good citizen to the HIBP API437          await new Promise((r) => setTimeout(r, 200));438        }439        // Persist any non-zero counts back to entries440        for (const [id, count] of Object.entries(results)) {441          const entry = vault.getEntryById(id);442          if (entry && (entry.breach ?? 0) !== count) {443            await vault.updateEntry(id, { breach: count > 0 ? count : undefined });444          }445        }446        return { ok: true, data: results };447      }448      case "GET_SETTINGS":449        return { ok: true, data: await vault.ensureSettingsLoaded() };450      case "UPDATE_SETTINGS": {451        const patch = msg.payload as Record<string, unknown>;452        await vault.updateSettings(patch as any);453        if (typeof patch.autoLockMinutes === "number") {454          await setupAutoLock();455          if (vault.isUnlocked()) touchAutoLock();456        }457        return { ok: true };458      }459      case "GET_PENDING_PASSKEY":460        return { ok: true, data: await getPendingPasskeyRequest() };461      case "APPROVE_PASSKEY": {462        const { requestId } = msg.payload as { requestId: number };463        await resolvePendingPasskeyRequest(requestId, true);464        return { ok: true };465      }466      case "DENY_PASSKEY": {467        const { requestId } = msg.payload as { requestId: number };468        await resolvePendingPasskeyRequest(requestId, false);469        return { ok: true };470      }471      case "GET_PASSKEYS":472        return {473          ok: true,474          data: vault.getEntries().filter((entry) => entry.passkey !== undefined),475        };476      case "DELETE_PASSKEY": {477        const { id } = msg.payload as { id: string };478        await vault.deleteEntry(id);479        return { ok: true };480      }481      case "GET_PASSKEY_PROVIDER_STATE":482        return { ok: true, data: await getPasskeyProviderState() };483      case "SET_PASSKEY_PROVIDER_ENABLED": {484        const { enabled } = msg.payload as { enabled: boolean };485        // Disabling is always free; gating fires only when a free user is486        // trying to turn passkey interception on.487        if (enabled) {488          const gate = await requirePro("passkeys");489          if (!gate.allowed) return { ok: false, error: "pro_required" };490        }491        return { ok: true, data: await setPasskeyProviderEnabled(enabled) };492      }493      case "FIRE_CANARY_PING": {494        const { webhookUrl, entryTitle, trigger } = msg.payload as {495          webhookUrl: string;496          entryTitle: string;497          trigger: "password_copied" | "username_copied" | "autofilled" | "submitted" | "test";498        };499        if (!isAllowedCanaryWebhookUrl(webhookUrl)) {500          return { ok: false, error: "invalid webhook url" };501        }502        const body = JSON.stringify({503          event: trigger === "test" ? "peach_canary_test" : "peach_canary_accessed",504          entry: entryTitle,505          trigger,506          timestamp: new Date().toISOString(),507          source: "peach-extension",508        });509        if (trigger === "test") {510          // Permitted outbound fetch: user-configured canary alert endpoint511          // (validated by isAllowedCanaryWebhookUrl above). This is the512          // only non-HIBP outbound call in the extension — see513          // Projects.md §3.7. Test pings are awaited so the UI can show514          // success/failure.515          try {516            const res = await fetch(webhookUrl, {517              method: "POST",518              headers: { "Content-Type": "application/json" },519              body,520            });521            return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };522          } catch (err) {523            return { ok: false, error: err instanceof Error ? err.message : "network error" };524          }525        }526        // Non-test triggers are fire-and-forget527        fetch(webhookUrl, {528          method: "POST",529          headers: { "Content-Type": "application/json" },530          body,531        }).catch(() => {});532        return { ok: true };533      }534      case "ACTIVATE_LICENSE": {535        const { key } = msg.payload as { key: string };536        const licenseInfo = await activateLicense(key);537        return { ok: true, data: licenseInfo };538      }539      case "GET_LICENSE": {540        const licenseInfo = await getLicenseInfo();541        return { ok: true, data: licenseInfo };542      }543      case "GET_LICENSE_KEY": {544        const key = await getLicenseKey();545        return { ok: true, data: key };546      }547      case "DEACTIVATE_LICENSE": {548        await deactivateLicense();549        return { ok: true };550      }551      case "SHOULD_PLAY_CELEBRATION": {552        const should = await shouldPlayCelebration();553        return { ok: true, data: should };554      }555      case "MARK_CELEBRATION_PLAYED": {556        await markCelebrationPlayed();557        return { ok: true };558      }559      case "OPEN_PRO_GATE": {560        // Content script requests: open popup and navigate to License section.561        const { feature } = (msg.payload ?? {}) as { feature?: string };562        if (chrome.storage.session) {563          await chrome.storage.session.set({ pendingProGate: { feature: feature ?? "passkeys" } });564        }565        try { await chrome.action.openPopup(); } catch { /* badge fallback */ }566        return { ok: true };567      }568      case "GET_IDENTITIES": {569        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };570        return { ok: true, data: vault.getIdentities() };571      }572      case "GET_ADVANCED_HEALTH_REPORT": {573        const gate = await requirePro("advanced_health");574        if (!gate.allowed) return { ok: false, error: "pro_required" };575        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };576        const report = await buildAdvancedHealthReport(vault.getEntries());577        return { ok: true, data: report };578      }579      case "INITIATE_PASSWORD_CHANGE": {580        const gate = await requirePro("smart_password_change");581        if (!gate.allowed) return { ok: false, error: "pro_required" };582        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };583        const { id } = msg.payload as { id: string };584        const entry = vault.getEntryById(id);585        if (!entry) return { ok: false, error: "entry not found" };586        const url = resolveResetUrl(entry);587        if (!url) return { ok: false, error: "no reset url" };588        try {589          await chrome.tabs.create({ url });590          return { ok: true, data: { url } };591        } catch (err) {592          return {593            ok: false,594            error: err instanceof Error ? err.message : "failed to open tab",595          };596        }597      }598      case "IS_DURESS_ENABLED": {599        const enabled = await vault.isDuressEnabled();600        return { ok: true, data: enabled };601      }602      case "SETUP_DURESS": {603        const { duressPassword } = msg.payload as { duressPassword: string };604        await vault.setupDuress(duressPassword);605        return { ok: true };606      }607      case "DISABLE_DURESS": {608        await vault.disableDuress();609        return { ok: true };610      }611      case "VERIFY_MAIN_PASSWORD": {612        const { password } = msg.payload as { password: string };613        const ok = await vault.verifyMainPassword(password);614        return { ok: true, data: ok };615      }616      case "CHANGE_PASSWORD": {617        const { currentPassword, newPassword } = msg.payload as {618          currentPassword: string;619          newPassword: string;620        };621        const changed = await vault.changePassword(currentPassword, newPassword);622        return changed623          ? { ok: true }624          : { ok: false, error: "incorrect current password" };625      }626      case "GET_SITE_PASSWORD_POLICY": {627        const [tab] = await chrome.tabs.query({ active: true, currentWindow: true });628        if (!tab?.id) return { ok: true, data: null };629        try {630          const response = await chrome.tabs.sendMessage(tab.id, {631            type: "GET_SITE_PASSWORD_POLICY",632          });633          return (response as MessageResponse) ?? { ok: true, data: null };634        } catch {635          return { ok: true, data: null };636        }637      }638      case "GET_SYNC_STATE": {639        const { getPairedDevices, getTrustedNetworks } = await import('./sync-storage');640        const { isOnTailscale } = await import('./sync-network');641        const { isProUser } = await import('./license');642        const { storageGet } = await import('../shared/storage');643        const pairedDevices = await getPairedDevices();644        const trustedNetworks = await getTrustedNetworks();645        const tailscale = await isOnTailscale();646        const pro = await isProUser();647648        let status: SyncStatus = "offline";649        if (tailscale || trustedNetworks.some((n: { isTailscale?: boolean }) => !n.isTailscale)) {650          if (pairedDevices.length === 0) {651            status = "no_peers";652          } else {653            status = "synced";654          }655        } else {656          status = "not_trusted";657        }658659        const lastSyncRaw = await storageGet("peach_last_sync_at");660        const lastSyncParsed = lastSyncRaw ? Number.parseInt(lastSyncRaw, 10) : NaN;661        const lastSyncAt = Number.isFinite(lastSyncParsed) ? lastSyncParsed : undefined;662663        return { ok: true, data: { pairedDevices, trustedNetworks, status, lastSyncAt, isPro: pro } };664      }665      case "TRIGGER_SYNC": {666        const gate = await requirePro("sync");667        if (!gate.allowed) return { ok: false, error: "pro_required" };668        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };669        return { ok: false, error: "no_native_host" };670      }671      case "START_PAIRING": {672        const gate = await requirePro("sync");673        if (!gate.allowed) return { ok: false, error: "pro_required" };674        return { ok: true };675      }676      case "CANCEL_PAIRING": {677        return { ok: true };678      }679      case "ACCEPT_PAIRING": {680        const gate = await requirePro("sync");681        if (!gate.allowed) return { ok: false, error: "pro_required" };682        return { ok: true };683      }684      case "REMOVE_PAIRED_DEVICE": {685        const { deviceId } = msg.payload as { deviceId: string };686        const { removePairedDevice } = await import('./sync-storage');687        await removePairedDevice(deviceId);688        return { ok: true };689      }690      case "REMOVE_TRUSTED_NETWORK": {691        const { ssid, bssid, isTailscale } = msg.payload as any;692        const { removeTrustedNetwork, getTrustedNetworks } = await import('./sync-storage');693        const networks = await getTrustedNetworks();694        const network = networks.find((n: { ssid?: string; bssid?: string; isTailscale?: boolean }) => 695          (isTailscale ? n.isTailscale : n.ssid === ssid) && 696          (!bssid || n.bssid === bssid)697        );698        if (network) {699          await removeTrustedNetwork(network.addedAt);700        }701        return { ok: true };702      }703      case "MARK_NETWORK_TRUSTED": {704        const { addTrustedNetwork } = await import('./sync-storage');705        const { getCurrentNetwork } = await import('./sync-network');706        const network = await getCurrentNetwork();707        await addTrustedNetwork({708          ssid: network.ssid,709          bssid: network.bssid,710          isTailscale: network.isTailscale,711          addedAt: Date.now(),712        });713        return { ok: true };714      }715      case "GET_INCOMING_PAIRING_REQUEST": {716        const { getIncomingPairingRequest } = await import('./sync-storage');717        const request = await getIncomingPairingRequest();718        return { ok: true, data: request };719      }720      case "RESPOND_INCOMING_PAIRING": {721        const { accept } = msg.payload as { accept: boolean };722        const { getIncomingPairingRequest, clearIncomingPairingRequest, addPairedDevice } =723          await import('./sync-storage');724        const request = await getIncomingPairingRequest();725        if (!request) return { ok: false, error: "no_pending_request" };726        if (Date.now() > request.expiresAt) {727          await clearIncomingPairingRequest();728          return { ok: false, error: "expired" };729        }730        await clearIncomingPairingRequest();731        if (accept) {732          await addPairedDevice({733            deviceId: request.publicKeyHex,734            displayName: request.deviceName,735            x25519PublicKey: request.publicKeyHex,736            pairedAt: Date.now(),737            lastSeenAt: Date.now(),738          });739        }740        return { ok: true, data: { accepted: accept, deviceName: request.deviceName } };741      }742      case "START_PEER_DISCOVERY": {743        const gate = await requirePro("sync");744        if (!gate.allowed) return { ok: false, error: "pro_required" };745        return { ok: false, error: "no_native_host" };746      }747      case "STOP_PEER_DISCOVERY": {748        return { ok: true };749      }750      case "START_PAIRING_SERVER": {751        const gate = await requirePro("sync");752        if (!gate.allowed) return { ok: false, error: "pro_required" };753        const token = generateSixDigitToken();754        const expiresAt = Date.now() + PAIRING_TOKEN_TTL_MS;755        const { setActivePairingToken } = await import('./pairing-server-state');756        await setActivePairingToken({ token, expiresAt });757        return { ok: true, data: { token, expiresAt } };758      }759      case "STOP_PAIRING_SERVER": {760        try {761          const { setActivePairingToken } = await import("./pairing-server-state");762          await setActivePairingToken(null);763        } catch { /* best-effort */ }764        return { ok: true };765      }766      case "CONNECT_WITH_CODE": {767        const gate = await requirePro("sync");768        if (!gate.allowed) return { ok: false, error: "pro_required" };769        return { ok: false, error: "no_native_host" };770      }771      case "GET_RECENT_PAIRING": {772        const { consumeRecentPairing } = await import('./pairing-server-state');773        const recent = await consumeRecentPairing();774        return { ok: true, data: recent };775      }776      case "INITIATE_PAIR_WITH_PEER": {777        const gate = await requirePro("sync");778        if (!gate.allowed) return { ok: false, error: "pro_required" };779        return { ok: false, error: "no_native_host" };780      }781      case "DEBUG_INJECT_INCOMING_PAIRING": {782        // Manual E2E rehearsal hook. Inserts a synthetic incoming pairing783        // request into session storage so Phase 7 banner UX can be exercised784        // without a live native host. No Pro gate — this is a no-op in785        // production unless explicitly invoked from a Settings debug action.786        const { deviceName, publicKeyHex } = (msg.payload ?? {}) as {787          deviceName?: string;788          publicKeyHex?: string;789        };790        if (!deviceName || !publicKeyHex) {791          return { ok: false, error: "missing_payload" };792        }793        const { setIncomingPairingRequest } = await import('./sync-storage');794        const now = Date.now();795        await setIncomingPairingRequest({796          deviceName,797          publicKeyHex,798          receivedAt: now,799          expiresAt: now + 60_000,800        });801        return { ok: true };802      }803      case "RESET_SYNC_IDENTITY": {804        const gate = await requirePro("sync");805        if (!gate.allowed) return { ok: false, error: "pro_required" };806        const { getPairedDevices, removePairedDevice } = await import('./sync-storage');807        const devices = await getPairedDevices();808        for (const device of devices) {809          await removePairedDevice(device.deviceId);810        }811        return { ok: true, data: { removedDevices: devices.length, nativePublicKey: null } };812      }813      case "RECORD_MANUAL_SUMMON": {814        const { domain } = msg.payload as { domain: string };815        const settings = vault.getSettings();816        const existing = settings.manualSummonDomains?.[domain];817        const now = Date.now();818        await vault.updateSettings({819          manualSummonDomains: {820            ...settings.manualSummonDomains,821            [domain]: {822              firstSummonedAt: existing?.firstSummonedAt ?? now,823              summonCount: (existing?.summonCount ?? 0) + 1,824              lastSummonedAt: now,825            },826          },827        });828        return { ok: true };829      }830      case "DECLINE_CARD_SAVE": {831        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };832        await vault.declineCardSaveOffer(last4, expMonth, expYear);833        return { ok: true };834      }835      case "IS_CARD_DECLINED": {836        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };837        const declined = await vault.isCardDeclined(last4, expMonth, expYear);838        return { ok: true, data: declined };839      }840      case "INITIATE_FIREFOX_PASSKEY_CREATE": {841        const { rpId, rpName, userName, userDisplayName } = (msg.payload ?? {}) as {842          rpId?: string;843          rpName?: string;844          userName?: string;845          userDisplayName?: string;846        };847        if (!rpId || !userName) return { ok: false, error: "rpId and userName required" };848        return await initiateFirefoxPasskeyCreate({849          rpId,850          rpName: rpName ?? rpId,851          userName,852          userDisplayName,853        });854      }855856      case "COMPLETE_FIREFOX_PASSKEY_CREATE": {857        const payload = msg.payload as Parameters<typeof completeFirefoxPasskeyCreate>[0] | undefined;858        if (!payload) return { ok: false, error: "missing payload" };859        return await completeFirefoxPasskeyCreate(payload);860      }861862      case "PASSKEY_OFFER_DECLINE": {863        const { domain } = (msg.payload ?? {}) as { domain?: string };864        if (!domain) return { ok: false, error: "domain required" };865        await recordPasskeyOfferDecline(domain);866        return { ok: true };867      }868869      case "GET_PASSKEY_OFFER_DECLINED": {870        const { domain } = (msg.payload ?? {}) as { domain?: string };871        if (!domain) return { ok: false, error: "domain required" };872        return { ok: true, data: await isPasskeyOfferDeclined(domain) };873      }874875      case "PASSKEY_HAS_CREDENTIALS": {876        const payload = msg.payload as {877          rpId?: string;878          allowCredentials?: Array<{ id: string; type?: string }>;879        } | undefined;880        if (!payload?.rpId) return { ok: false, error: "rpId required" };881        return await handlePasskeyHasCredentials({882          rpId: payload.rpId,883          allowCredentials: payload.allowCredentials ?? [],884        });885      }886887      case "PASSKEY_CREATE": {888        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyCreate>[0] | undefined;889        if (!payload?.rpId || !payload?.userName) {890          return { ok: false, error: "rpId and userName required" };891        }892        return await handleFirefoxPasskeyCreate(payload);893      }894895      case "PASSKEY_GET": {896        const payload = msg.payload as Parameters<typeof handleFirefoxPasskeyGet>[0] | undefined;897        if (!payload?.rpId) return { ok: false, error: "rpId required" };898        return await handleFirefoxPasskeyGet(payload);899      }900901      case "GET_PASSKEY_FOR_DOMAIN": {902        const { domain } = (msg.payload ?? {}) as { domain?: string };903        if (!domain) return { ok: false, error: "domain required" };904        if (!vault.isUnlocked()) return { ok: true, data: null };905        const match = vault906          .getEntries()907          .find((entry) => entry.passkey?.rpId === domain);908        if (!match || !match.passkey) return { ok: true, data: null };909        // Slim shape — only the fields State 11 needs. Never expose private910        // key material, even though this is locked behind isUnlocked.911        return {912          ok: true,913          data: {914            rpId: match.passkey.rpId,915            userName: match.passkey.userName,916            browser: match.passkey.browser,917          },918        };919      }920921      case "DESTROY_VAULT": {922        // Irreversible by design. Lock zeroes the derived key + in-memory entries;923        // storage.local.clear() wipes every Peach key (slots, settings, license,924        // onboarded flag, history, sync state, declined cards, recall, etc.);925        // session.clear() wipes pending passkey requests + pro-notice queues.926        // Caller (Panic.tsx) handles UI navigation back to onboarding.927        vault.lock();928        await storageClear();929        await vault.clearVaultHistory();930        if (chrome.storage.session) {931          await chrome.storage.session.clear();932        }933        return { ok: true };934      }935936      case "SUBMIT_FEEDBACK": {937        const { category, message, version, browser } = msg.payload as {938          category: string;939          message: string;940          version: string;941          browser: string;942        };943        if (!message.trim()) return { ok: false, error: "message is empty" };944        if (!FEEDBACK_ENDPOINT) return { ok: true };945        if (!isAllowedCanaryWebhookUrl(FEEDBACK_ENDPOINT)) {946          return { ok: false, error: "invalid feedback endpoint" };947        }948        try {949          const res = await fetch(FEEDBACK_ENDPOINT, {950            method: "POST",951            headers: { "Content-Type": "application/json" },952            body: JSON.stringify({ category, message, version, browser, source: "peach-extension" }),953          });954          return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };955        } catch (err) {956          return { ok: false, error: err instanceof Error ? err.message : "network error" };957        }958      }959      case "TRIGGER_SYNC": {960        if (isNativePlatform()) {961          bridge?.ensureServerRunning?.();962          return { ok: true, data: { syncedCount: 0, mode: "server" as const } };963        }964        return await desktopTriggerSync({ getLastKnownIp: () => null });965      }966      // Android-only: biometric unlock with pre-derived key.967      case "UNLOCK_WITH_KEY": {968        const { masterKeyHex } = msg.payload as { masterKeyHex: string };969        if (!isNativePlatform()) {970          return { ok: false, error: "desktop_only_uses_password" };971        }972        try {973          const result = await vault.unlockWithKey(masterKeyHex);974          if (result.ok) await publishInMemoryVault(result.entries);975          return { ok: result.ok, data: result.ok ? { entries: result.entries } : undefined, error: result.ok ? undefined : result.error };976        } catch {977          return { ok: false, error: "invalid_key" };978        }979      }980      // Android: returns current in-memory derived key as hex. Used by biometric enable flow.981      case "GET_DERIVED_KEY": {982        if (!isNativePlatform()) {983          return { ok: false, error: "android_only" };984        }985        if (!vault.isUnlocked()) {986          return { ok: false, error: "vault_locked" };987        }988        return { ok: true, data: { masterKeyHex: vault.getDerivedKeyHex() } };989      }990      // Android: scanned a QR containing a desktop pairing token.991      case "SCAN_PAIRING_QR": {992        if (!isNativePlatform()) {993          return { ok: false, error: "android_only" };994        }995        const { token } = msg.payload as { token: string };996        bridge?.startPairingSession?.({ token });997        return { ok: true };998      }999      // Android: returns the phone's WiFi IP address.1000      case "GET_LOCAL_IP": {1001        if (!isNativePlatform()) {1002          return { ok: false, error: "android_only" };1003        }1004        const { ip } = (await bridge?.getLocalIp?.()) ?? { ip: "" };1005        return { ok: true, data: { ip } };1006      }1007      // Desktop: generates a pairing token and starts the subnet scan for QR pairing.1008      case "START_PAIRING_SERVER": {1009        if (isNativePlatform()) {1010          return { ok: false, error: "desktop_only" };1011        }1012        const arr = new Uint32Array(1);1013        crypto.getRandomValues(arr);1014        const token = String(100000 + (arr[0] % 900000));1015        activeDesktopPairingToken = token;1016        activeDesktopPairingExpiry = Date.now() + 5 * 60 * 1000;1017        startSubnetScan(token, { getLocalAddress: () => null });1018        return { ok: true, data: { token, expiresIn: 300 } };1019      }1020      case "GET_IDENTITY_SUGGESTIONS": {1021        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };1022        const entries = vault.getEntries();1023        const suggestions = buildIdentitySuggestions(entries);1024        return { ok: true, data: { suggestions } };1025      }1026      case "POPULATE_INLINE_VAULT": {1027        if (!isNativePlatform()) return { ok: false };1028        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };1029        const entries = vault.getEntries();1030        await publishInMemoryVault(entries);1031        return { ok: true };1032      }1033      default:1034        return { ok: false, error: "unknown message type" };1035    }1036  } catch (err) {1037    return {1038      ok: false,1039      error: err instanceof Error ? err.message : "operation failed",1040    };1041  }1042}10431044// --- Mobile platform helpers ---10451046// Desktop: triggers sync for all paired devices.1047async function desktopTriggerSync(deps: {1048  getLastKnownIp: () => string | null;1049}): Promise<{ ok: true; syncedCount: number } | { ok: false; error: string }> {1050  const ip = deps.getLastKnownIp();1051  if (!ip) return { ok: false, error: "no_paired_devices" };1052  return { ok: true, syncedCount: 0 };1053}10541055// Desktop: starts background subnet scan for QR pairing.1056function startSubnetScan(1057  token: string,1058  _deps: {1059    getLocalAddress: () => string | null;1060  }1061): void {1062  // TODO: implement subnet scan and WebSocket pairing server1063}10641065// Android: populates the in-memory vault used by PeachAutofillService.1066async function publishInMemoryVault(entries: VaultEntry[]): Promise<void> {1067  // TODO: wire up to autofill in-memory store (exists in Android, not here)1068}10691070// Returns all emails and usernames from the vault, deduped and sorted by frequency.1071function buildIdentitySuggestions(1072  entries: VaultEntry[],1073): Array<{ email: string; username: string; count: number }> {1074  const map = new Map<string, number>();1075  for (const entry of entries) {1076    if (entry.username) map.set(entry.username, (map.get(entry.username) ?? 0) + 1);1077  }1078  return Array.from(map.entries())1079    .sort((a, b) => b[1] - a[1])1080    .map(([username, count]) => ({ email: username, username, count }));1081}10821083// Mobile bridge — runtime check to avoid importing Capacitor at the top level.1084// eslint-disable-next-line @typescript-eslint/no-explicit-any1085const bridge = (typeof (globalThis as any).Capacitor !== "undefined")1086  ? (globalThis as any).Capacitor.Plugins.SyncPlugin1087  : null;10881089// eslint-disable-next-line @typescript-eslint/no-explicit-any1090const isNativePlatform = (): boolean => typeof (globalThis as any).Capacitor !== "undefined" && (globalThis as any).isNativePlatform();10911092let activeDesktopPairingToken: string | null = null;1093let activeDesktopPairingExpiry = 0;10941095/** Notify all content scripts that the vault just became available. */1096function broadcastToContentScripts(message: { type: string }): void {1097  if (!chrome.tabs?.query) return;1098  chrome.tabs.query({}, (tabs) => {1099    for (const tab of tabs) {1100      if (tab.id !== undefined) {1101        chrome.tabs.sendMessage(tab.id, message).catch(() => {1102          // Tab may not have a content script — silently ignore1103        });1104      }1105    }1106  });1107}11081109function shouldRefreshAutoLock(type: MessageType): boolean {1110  return (1111    type !== "HAS_VAULT" &&1112    type !== "IS_UNLOCKED" &&1113    type !== "GET_VAULT_STATUS" &&1114    type !== "LOCK" &&1115    type !== "UPDATE_SETTINGS" &&1116    type !== "GET_PENDING_PASSKEY" &&1117    type !== "GET_PASSKEY_PROVIDER_STATE" &&1118    type !== "DECLINE_CARD_SAVE" &&1119    type !== "IS_CARD_DECLINED" &&1120    type !== "SUBMIT_FEEDBACK"1121  );1122}11231124function isAllowedCanaryWebhookUrl(value: string): boolean {1125  try {1126    const url = new URL(value);1127    if (url.protocol !== "https:") return false;11281129    const hostname = url.hostname.toLowerCase();1130    if (1131      hostname === "localhost" ||1132      hostname.endsWith(".localhost") ||1133      isPrivateIpv4(hostname) ||1134      isPrivateIpv6(hostname)1135    ) {1136      return false;1137    }11381139    return true;1140  } catch {1141    return false;1142  }1143}11441145function isPrivateIpv4(hostname: string): boolean {1146  if (PRIVATE_IPV4_RANGES.some((range) => hostname.startsWith(range.prefix))) {1147    return true;1148  }11491150  const octets = hostname.split(".").map((part) => Number(part));1151  if (octets.length !== 4 || octets.some((octet) => !Number.isInteger(octet) || octet < 0 || octet > 255)) {1152    return false;1153  }11541155  return octets[0] === 172 && octets[1] >= 16 && octets[1] <= 31;1156}11571158function isPrivateIpv6(hostname: string): boolean {1159  const normalized = hostname.replace(/^\[|\]$/g, "").toLowerCase();1160  return (1161    normalized === "::1" ||1162    normalized.startsWith("fc") ||1163    normalized.startsWith("fd") ||1164    normalized.startsWith("fe80:")1165  );1166}