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  initiateFirefoxPasskeyCreate,30  isPasskeyOfferDeclined,31  recordPasskeyOfferDecline,32  resolvePendingPasskeyRequest,33  setPasskeyProviderEnabled,34} from "./passkey";35import { buildAdvancedHealthReport, resolveResetUrl } from "./health";36import type {37  Message,38  MessageResponse,39  MessageType,40  ProFeature,41} from "../shared/types";42import { isPasskeyOnly } from "../shared/types";43import type { SyncStatus } from "../shared/sync-types";4445/**46 * The single Pro gate. Every gated handler calls this first; the broadcast47 * lets the popup react (navigate to the License section, highlight the48 * relevant feature). Background never touches the popup view directly —49 * the popup owns navigation. See Projects.md "Pro gate rule".50 */51async function requirePro(52  feature: ProFeature,53  trigger: "user" | "background" = "user"54): Promise<{ allowed: boolean }> {55  if (await isProUser()) return { allowed: true };5657  if (trigger === "user") {58    // User deliberately triggered this feature — redirect the popup immediately.59    chrome.runtime60      .sendMessage({ type: "PRO_GATE_TRIGGERED", payload: { feature } })61      .catch(() => {62        // Popup may be closed — the gate signal is best-effort.63      });64  } else {65    // Background trigger (e.g. passive sync initiation) — no popup is open.66    // Queue a notice so the next popup open shows a soft banner instead of67    // silently failing.68    if (chrome.storage.session) {69      chrome.storage.session70        .set({ pendingProNotice: { feature, triggeredAt: Date.now() } })71        .catch(() => {});72    }73  }7475  return { allowed: false };76}7778const PRIVATE_IPV4_RANGES = [79  { prefix: "10." },80  { prefix: "127." },81  { prefix: "169.254." },82  { prefix: "192.168." },83];8485// Empty disables network submission while the UI continues to function as a86// no-op (the handler returns ok:true without calling fetch). When set, the87// URL is validated by `isAllowedCanaryWebhookUrl` before any request, so the88// same private-IP/HTTPS rules that gate canary webhooks apply here.89const FEEDBACK_ENDPOINT = "";9091export function setupMessageHandler(): void {92  chrome.runtime.onMessage.addListener(93    (msg: unknown, sender, sendResponse) => {94      if (!isMessage(msg)) {95        sendResponse({ ok: false, error: "invalid message" });96        return true;97      }98      handleMessage(msg, sender)99        .then(sendResponse)100        .catch((err) =>101          sendResponse({102            ok: false,103            error: err instanceof Error ? err.message : String(err),104          })105        );106      return true;107    }108  );109}110111function isMessage(m: unknown): m is Message {112  return typeof m === "object" && m !== null && "type" in m;113}114115async function handleMessage(116  msg: Message,117  sender: chrome.runtime.MessageSender118): Promise<MessageResponse> {119  try {120    // Validate sender — only allow messages from our extension pages/scripts.121    // `sender.id` is undefined for messages originating from extension UI122    // (popup/options), which is legitimate; reject only when it is defined123    // and does not match our extension id.124    if (sender.id !== undefined && sender.id !== chrome.runtime.id) {125      return { ok: false, error: "invalid sender" };126    }127128    if (shouldRefreshAutoLock(msg.type) && vault.isUnlocked()) {129      touchAutoLock();130    }131132    switch (msg.type) {133      case "CREATE_VAULT": {134        const { password } = msg.payload as { password: string };135        await vault.createVault(password);136        await setupAutoLock();137        broadcastToContentScripts({ type: "VAULT_UNLOCKED" });138        return { ok: true };139      }140      case "UNLOCK": {141        const { password } = msg.payload as { password: string };142        const ok = await vault.unlock(password);143        if (ok) {144          await setupAutoLock();145          broadcastToContentScripts({ type: "VAULT_UNLOCKED" });146        }147        return { ok };148      }149      case "LOCK":150        vault.lock();151        return { ok: true };152      case "IS_UNLOCKED":153        return { ok: true, data: vault.isUnlocked() };154      case "GET_VAULT_STATUS":155        return { ok: true, unlocked: vault.isUnlocked() };156      case "HAS_VAULT":157        return { ok: true, data: await vault.hasVault() };158      case "GET_ENTRIES":159        return { ok: true, data: vault.getEntries() };160      case "ADD_ENTRY": {161        const entry = await vault.addEntry(msg.payload as any);162        return { ok: true, data: entry };163      }164      case "BATCH_ADD_ENTRIES": {165        const { entries } = msg.payload as { entries: any[] };166        const added = await vault.batchAddEntries(entries);167        return { ok: true, data: added };168      }169      case "RESTORE_ENTRIES": {170        const { entries, mode, settings } = msg.payload as {171          entries: any[];172          mode: "replace" | "merge";173          settings?: vault.VaultSettings;174        };175        const summary = await vault.restoreEntries(entries, mode);176        if (settings && typeof settings === "object") {177          await vault.updateSettings(settings);178        }179        return { ok: true, data: summary };180      }181      case "CLEAR_VAULT_ENTRIES": {182        await vault.clearVaultEntries("REPLACE_ALL");183        return { ok: true };184      }185      case "LIST_VAULT_SNAPSHOTS": {186        const snapshots = await vault.listSnapshots();187        return { ok: true, data: snapshots };188      }189      case "RESTORE_VAULT_SNAPSHOT": {190        const { index, password } = msg.payload as { index: number; password: string };191        const ok = await vault.restoreFromSnapshot(index, password);192        if (ok) broadcastToContentScripts({ type: "VAULT_UNLOCKED" });193        return { ok };194      }195      case "COUNT_DUPLICATES": {196        return { ok: true, data: vault.countDuplicates() };197      }198      case "DEDUPLICATE_ENTRIES": {199        const removed = await vault.deduplicateEntries();200        return { ok: true, data: removed };201      }202      case "UPDATE_ENTRY": {203        const { id, patch } = msg.payload as any;204        await vault.updateEntry(id, patch);205        return { ok: true };206      }207      case "ADD_ADDITIONAL_URL": {208        const { id, url } = msg.payload as { id: string; url: string };209        const trimmed = typeof url === "string" ? url.trim() : "";210        if (!trimmed) return { ok: false, error: "url required" };211        const existing = vault.getEntryById(id);212        if (!existing) return { ok: false, error: "entry not found" };213        if (existing.type !== "login") return { ok: false, error: "login entries only" };214        const merged = [...(existing.additionalUrls ?? []), trimmed];215        await vault.updateEntry(id, { additionalUrls: merged });216        return { ok: true };217      }218      case "DELETE_ENTRY": {219        const { id } = msg.payload as { id: string };220        await vault.deleteEntry(id);221        return { ok: true };222      }223      case "GET_DELETED_ENTRIES":224        return { ok: true, data: vault.getDeletedEntries() };225      case "RESTORE_ENTRY": {226        const { id } = msg.payload as { id: string };227        await vault.restoreEntry(id);228        return { ok: true };229      }230      case "PURGE_ENTRY": {231        const { id } = msg.payload as { id: string };232        await vault.purgeEntry(id);233        return { ok: true };234      }235      case "PURGE_EXPIRED_TRASH": {236        const { retentionMs } = msg.payload as { retentionMs: number };237        const purged = await vault.purgeExpiredTrash(retentionMs);238        return { ok: true, data: purged };239      }240      case "AUTOFILL_QUERY": {241        if (!vault.isUnlocked()) {242          return { ok: false, error: "VAULT_LOCKED" };243        }244        const { domain, includeAll, kind } = msg.payload as {245          domain: string;246          includeAll?: boolean;247          kind?: "login" | "card";248        };249        // kind="card": return saved cards as compact summaries for the250        // inline card silver platter. Cards are not domain-scoped — every251        // saved card is a candidate on every checkout page — so domain is252        // ignored when kind === "card".253        if (kind === "card") {254          const cards = vault.getEntries().filter((e) => e.type === "card");255          return {256            ok: true,257            data: cards.map((e) => ({258              id: e.id,259              title: e.cardNickname || e.title,260              cardholderName: e.cardholderName,261              last4: e.last4,262              expMonth: e.expMonth,263              expYear: e.expYear,264              network: e.network,265            })),266          };267        }268        const matches = includeAll269          ? vault270              .getEntries()271              .filter((entry) => entry.type !== "note" && entry.type !== "passkey" && entry.type !== "card")272          : vault.queryDomain(domain);273        return {274          ok: true,275          data: matches.map((e) =>276            includeAll277              ? {278                  id: e.id,279                  title: e.title,280                }281              : {282                  id: e.id,283                  title: e.title,284                  username: e.username,285                  url: e.url,286                  hasTotp: Boolean(e.totp),287                }288          ),289        };290      }291      case "GET_ENTRY_FOR_FILL": {292        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };293        const { id } = msg.payload as { id: string };294        const entry = vault.getEntryById(id);295        if (!entry) return { ok: false, error: "entry not found" };296        // Passkey-only entries (passkey credential, no password) cannot be297        // filled into a form — sign-in goes through the WebAuthn path. A298        // login that ALSO has a passkey is still fillable for its password.299        if (isPasskeyOnly(entry)) return { ok: false, error: "passkey not fillable" };300        // Strip the passkey credential from the response — content scripts301        // never need the private key, and there's no reason to expose the302        // public credential metadata over the boundary either.303        const { passkey: _strippedPasskey, ...safeEntry } = entry;304        return { ok: true, data: safeEntry };305      }306      case "COPY": {307        const { text, label, alreadyWritten } = msg.payload as {308          text: string;309          label: string;310          alreadyWritten?: boolean;311        };312        await copyToClipboard(text, label, Boolean(alreadyWritten));313        return { ok: true };314      }315      case "CHECK_BREACH": {316        const { password } = msg.payload as { password: string };317        const count = await vault.checkBreach(password);318        return { ok: true, data: count };319      }320      case "CHECK_ALL_BREACHES": {321        const allEntries = vault.getEntries();322        const results: Record<string, number> = {};323        for (const entry of allEntries) {324          if (entry.type === "note") continue;325          if (!entry.password) continue;326          results[entry.id] = await vault.checkBreach(entry.password);327          // Small delay — be a good citizen to the HIBP API328          await new Promise((r) => setTimeout(r, 200));329        }330        // Persist any non-zero counts back to entries331        for (const [id, count] of Object.entries(results)) {332          const entry = vault.getEntryById(id);333          if (entry && (entry.breach ?? 0) !== count) {334            await vault.updateEntry(id, { breach: count > 0 ? count : undefined });335          }336        }337        return { ok: true, data: results };338      }339      case "GET_SETTINGS":340        return { ok: true, data: await vault.ensureSettingsLoaded() };341      case "UPDATE_SETTINGS": {342        const patch = msg.payload as Record<string, unknown>;343        await vault.updateSettings(patch as any);344        if (typeof patch.autoLockMinutes === "number") {345          await setupAutoLock();346          if (vault.isUnlocked()) touchAutoLock();347        }348        return { ok: true };349      }350      case "GET_PENDING_PASSKEY":351        return { ok: true, data: await getPendingPasskeyRequest() };352      case "APPROVE_PASSKEY": {353        const { requestId } = msg.payload as { requestId: number };354        await resolvePendingPasskeyRequest(requestId, true);355        return { ok: true };356      }357      case "DENY_PASSKEY": {358        const { requestId } = msg.payload as { requestId: number };359        await resolvePendingPasskeyRequest(requestId, false);360        return { ok: true };361      }362      case "GET_PASSKEYS":363        return {364          ok: true,365          data: vault.getEntries().filter((entry) => entry.type === "passkey"),366        };367      case "DELETE_PASSKEY": {368        const { id } = msg.payload as { id: string };369        await vault.deleteEntry(id);370        return { ok: true };371      }372      case "GET_PASSKEY_PROVIDER_STATE":373        return { ok: true, data: await getPasskeyProviderState() };374      case "SET_PASSKEY_PROVIDER_ENABLED": {375        const { enabled } = msg.payload as { enabled: boolean };376        // Disabling is always free; gating fires only when a free user is377        // trying to turn passkey interception on.378        if (enabled) {379          const gate = await requirePro("passkeys");380          if (!gate.allowed) return { ok: false, error: "pro_required" };381        }382        return { ok: true, data: await setPasskeyProviderEnabled(enabled) };383      }384      case "FIRE_CANARY_PING": {385        const { webhookUrl, entryTitle, trigger } = msg.payload as {386          webhookUrl: string;387          entryTitle: string;388          trigger: "password_copied" | "username_copied" | "autofilled" | "submitted" | "test";389        };390        if (!isAllowedCanaryWebhookUrl(webhookUrl)) {391          return { ok: false, error: "invalid webhook url" };392        }393        const body = JSON.stringify({394          event: trigger === "test" ? "peach_canary_test" : "peach_canary_accessed",395          entry: entryTitle,396          trigger,397          timestamp: new Date().toISOString(),398          source: "peach-extension",399        });400        if (trigger === "test") {401          // Permitted outbound fetch: user-configured canary alert endpoint402          // (validated by isAllowedCanaryWebhookUrl above). This is the403          // only non-HIBP outbound call in the extension — see404          // Projects.md §3.7. Test pings are awaited so the UI can show405          // success/failure.406          try {407            const res = await fetch(webhookUrl, {408              method: "POST",409              headers: { "Content-Type": "application/json" },410              body,411            });412            return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };413          } catch (err) {414            return { ok: false, error: err instanceof Error ? err.message : "network error" };415          }416        }417        // Non-test triggers are fire-and-forget418        fetch(webhookUrl, {419          method: "POST",420          headers: { "Content-Type": "application/json" },421          body,422        }).catch(() => {});423        return { ok: true };424      }425      case "ACTIVATE_LICENSE": {426        const { key } = msg.payload as { key: string };427        const licenseInfo = await activateLicense(key);428        return { ok: true, data: licenseInfo };429      }430      case "GET_LICENSE": {431        const licenseInfo = await getLicenseInfo();432        return { ok: true, data: licenseInfo };433      }434      case "GET_LICENSE_KEY": {435        const key = await getLicenseKey();436        return { ok: true, data: key };437      }438      case "DEACTIVATE_LICENSE": {439        await deactivateLicense();440        return { ok: true };441      }442      case "SHOULD_PLAY_CELEBRATION": {443        const should = await shouldPlayCelebration();444        return { ok: true, data: should };445      }446      case "MARK_CELEBRATION_PLAYED": {447        await markCelebrationPlayed();448        return { ok: true };449      }450      case "OPEN_PRO_GATE": {451        // Content script requests: open popup and navigate to License section.452        const { feature } = (msg.payload ?? {}) as { feature?: string };453        if (chrome.storage.session) {454          await chrome.storage.session.set({ pendingProGate: { feature: feature ?? "passkeys" } });455        }456        try { await chrome.action.openPopup(); } catch { /* badge fallback */ }457        return { ok: true };458      }459      case "GET_IDENTITIES": {460        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };461        return { ok: true, data: vault.getIdentities() };462      }463      case "GET_ADVANCED_HEALTH_REPORT": {464        const gate = await requirePro("advanced_health");465        if (!gate.allowed) return { ok: false, error: "pro_required" };466        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };467        const report = await buildAdvancedHealthReport(vault.getEntries());468        return { ok: true, data: report };469      }470      case "INITIATE_PASSWORD_CHANGE": {471        const gate = await requirePro("smart_password_change");472        if (!gate.allowed) return { ok: false, error: "pro_required" };473        if (!vault.isUnlocked()) return { ok: false, error: "vault locked" };474        const { id } = msg.payload as { id: string };475        const entry = vault.getEntryById(id);476        if (!entry) return { ok: false, error: "entry not found" };477        const url = resolveResetUrl(entry);478        if (!url) return { ok: false, error: "no reset url" };479        try {480          await chrome.tabs.create({ url });481          return { ok: true, data: { url } };482        } catch (err) {483          return {484            ok: false,485            error: err instanceof Error ? err.message : "failed to open tab",486          };487        }488      }489      case "IS_DURESS_ENABLED": {490        const enabled = await vault.isDuressEnabled();491        return { ok: true, data: enabled };492      }493      case "SETUP_DURESS": {494        const { duressPassword } = msg.payload as { duressPassword: string };495        await vault.setupDuress(duressPassword);496        return { ok: true };497      }498      case "DISABLE_DURESS": {499        await vault.disableDuress();500        return { ok: true };501      }502      case "VERIFY_MAIN_PASSWORD": {503        const { password } = msg.payload as { password: string };504        const ok = await vault.verifyMainPassword(password);505        return { ok: true, data: ok };506      }507      case "CHANGE_PASSWORD": {508        const { currentPassword, newPassword } = msg.payload as {509          currentPassword: string;510          newPassword: string;511        };512        const changed = await vault.changePassword(currentPassword, newPassword);513        return changed514          ? { ok: true }515          : { ok: false, error: "incorrect current password" };516      }517      case "GET_SITE_PASSWORD_POLICY": {518        const [tab] = await chrome.tabs.query({ active: true, currentWindow: true });519        if (!tab?.id) return { ok: true, data: null };520        try {521          const response = await chrome.tabs.sendMessage(tab.id, {522            type: "GET_SITE_PASSWORD_POLICY",523          });524          return (response as MessageResponse) ?? { ok: true, data: null };525        } catch {526          return { ok: true, data: null };527        }528      }529      case "GET_SYNC_STATE": {530        const { getPairedDevices, getTrustedNetworks } = await import('./sync-storage');531        const { isOnTailscale } = await import('./sync-network');532        const { isProUser } = await import('./license');533        const pairedDevices = await getPairedDevices();534        const trustedNetworks = await getTrustedNetworks();535        const tailscale = await isOnTailscale();536        const pro = await isProUser();537        538        let status: SyncStatus = "offline";539        if (tailscale || trustedNetworks.some((n: { isTailscale?: boolean }) => !n.isTailscale)) {540          if (pairedDevices.length === 0) {541            status = "no_peers";542          } else {543            status = "synced";544          }545        } else {546          status = "not_trusted";547        }548        549        return { ok: true, data: { pairedDevices, trustedNetworks, status, isPro: pro } };550      }551      case "TRIGGER_SYNC": {552        const gate = await requirePro("sync");553        if (!gate.allowed) return { ok: false, error: "pro_required" };554        return { ok: true };555      }556      case "START_PAIRING": {557        const gate = await requirePro("sync");558        if (!gate.allowed) return { ok: false, error: "pro_required" };559        return { ok: true };560      }561      case "CANCEL_PAIRING": {562        return { ok: true };563      }564      case "ACCEPT_PAIRING": {565        const gate = await requirePro("sync");566        if (!gate.allowed) return { ok: false, error: "pro_required" };567        return { ok: true };568      }569      case "REMOVE_PAIRED_DEVICE": {570        const { deviceId } = msg.payload as { deviceId: string };571        const { removePairedDevice } = await import('./sync-storage');572        await removePairedDevice(deviceId);573        return { ok: true };574      }575      case "REMOVE_TRUSTED_NETWORK": {576        const { ssid, bssid, isTailscale } = msg.payload as any;577        const { removeTrustedNetwork, getTrustedNetworks } = await import('./sync-storage');578        const networks = await getTrustedNetworks();579        const network = networks.find((n: { ssid?: string; bssid?: string; isTailscale?: boolean }) => 580          (isTailscale ? n.isTailscale : n.ssid === ssid) && 581          (!bssid || n.bssid === bssid)582        );583        if (network) {584          await removeTrustedNetwork(network.addedAt);585        }586        return { ok: true };587      }588      case "MARK_NETWORK_TRUSTED": {589        const { addTrustedNetwork } = await import('./sync-storage');590        const { getCurrentNetwork } = await import('./sync-network');591        const network = await getCurrentNetwork();592        await addTrustedNetwork({593          ssid: network.ssid,594          bssid: network.bssid,595          isTailscale: network.isTailscale,596          addedAt: Date.now(),597        });598        return { ok: true };599      }600      case "RECORD_MANUAL_SUMMON": {601        const { domain } = msg.payload as { domain: string };602        const settings = vault.getSettings();603        const existing = settings.manualSummonDomains?.[domain];604        const now = Date.now();605        await vault.updateSettings({606          manualSummonDomains: {607            ...settings.manualSummonDomains,608            [domain]: {609              firstSummonedAt: existing?.firstSummonedAt ?? now,610              summonCount: (existing?.summonCount ?? 0) + 1,611              lastSummonedAt: now,612            },613          },614        });615        return { ok: true };616      }617      case "DECLINE_CARD_SAVE": {618        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };619        await vault.declineCardSaveOffer(last4, expMonth, expYear);620        return { ok: true };621      }622      case "IS_CARD_DECLINED": {623        const { last4, expMonth, expYear } = msg.payload as { last4: string; expMonth: string; expYear: string };624        const declined = await vault.isCardDeclined(last4, expMonth, expYear);625        return { ok: true, data: declined };626      }627      case "INITIATE_FIREFOX_PASSKEY_CREATE": {628        const { rpId, rpName, userName, userDisplayName } = (msg.payload ?? {}) as {629          rpId?: string;630          rpName?: string;631          userName?: string;632          userDisplayName?: string;633        };634        if (!rpId || !userName) return { ok: false, error: "rpId and userName required" };635        return await initiateFirefoxPasskeyCreate({636          rpId,637          rpName: rpName ?? rpId,638          userName,639          userDisplayName,640        });641      }642643      case "COMPLETE_FIREFOX_PASSKEY_CREATE": {644        const payload = msg.payload as Parameters<typeof completeFirefoxPasskeyCreate>[0] | undefined;645        if (!payload) return { ok: false, error: "missing payload" };646        return await completeFirefoxPasskeyCreate(payload);647      }648649      case "PASSKEY_OFFER_DECLINE": {650        const { domain } = (msg.payload ?? {}) as { domain?: string };651        if (!domain) return { ok: false, error: "domain required" };652        await recordPasskeyOfferDecline(domain);653        return { ok: true };654      }655656      case "GET_PASSKEY_OFFER_DECLINED": {657        const { domain } = (msg.payload ?? {}) as { domain?: string };658        if (!domain) return { ok: false, error: "domain required" };659        return { ok: true, data: await isPasskeyOfferDeclined(domain) };660      }661662      case "GET_PASSKEY_FOR_DOMAIN": {663        const { domain } = (msg.payload ?? {}) as { domain?: string };664        if (!domain) return { ok: false, error: "domain required" };665        if (!vault.isUnlocked()) return { ok: true, data: null };666        const match = vault667          .getEntries()668          .find((entry) => entry.type === "passkey" && entry.rpId === domain);669        if (!match) return { ok: true, data: null };670        // Slim shape — only the fields State 11 needs. Never expose private671        // key material, even though this is locked behind isUnlocked.672        return {673          ok: true,674          data: {675            rpId: match.rpId,676            userName: match.userName,677            browser: match.browser,678          },679        };680      }681682      case "DESTROY_VAULT": {683        // Irreversible by design. Lock zeroes the derived key + in-memory entries;684        // storage.local.clear() wipes every Peach key (slots, settings, license,685        // onboarded flag, snapshots, sync state, declined cards, recall, etc.);686        // session.clear() wipes pending passkey requests + pro-notice queues.687        // Caller (Panic.tsx) handles UI navigation back to onboarding.688        vault.lock();689        await chrome.storage.local.clear();690        if (chrome.storage.session) {691          await chrome.storage.session.clear();692        }693        return { ok: true };694      }695696      case "SUBMIT_FEEDBACK": {697        const { category, message, version, browser } = msg.payload as {698          category: string;699          message: string;700          version: string;701          browser: string;702        };703        if (!message.trim()) return { ok: false, error: "message is empty" };704        if (!FEEDBACK_ENDPOINT) return { ok: true };705        if (!isAllowedCanaryWebhookUrl(FEEDBACK_ENDPOINT)) {706          return { ok: false, error: "invalid feedback endpoint" };707        }708        try {709          const res = await fetch(FEEDBACK_ENDPOINT, {710            method: "POST",711            headers: { "Content-Type": "application/json" },712            body: JSON.stringify({ category, message, version, browser, source: "peach-extension" }),713          });714          return { ok: res.ok, error: res.ok ? undefined : `HTTP ${res.status}` };715        } catch (err) {716          return { ok: false, error: err instanceof Error ? err.message : "network error" };717        }718      }719      default:720        return { ok: false, error: "unknown message type" };721    }722  } catch (err) {723    return {724      ok: false,725      error: err instanceof Error ? err.message : "operation failed",726    };727  }728}729730/** Notify all content scripts that the vault just became available. */731function broadcastToContentScripts(message: { type: string }): void {732  chrome.tabs.query({}, (tabs) => {733    for (const tab of tabs) {734      if (tab.id !== undefined) {735        chrome.tabs.sendMessage(tab.id, message).catch(() => {736          // Tab may not have a content script — silently ignore737        });738      }739    }740  });741}742743function shouldRefreshAutoLock(type: MessageType): boolean {744  return (745    type !== "HAS_VAULT" &&746    type !== "IS_UNLOCKED" &&747    type !== "GET_VAULT_STATUS" &&748    type !== "LOCK" &&749    type !== "UPDATE_SETTINGS" &&750    type !== "GET_PENDING_PASSKEY" &&751    type !== "GET_PASSKEY_PROVIDER_STATE" &&752    type !== "DECLINE_CARD_SAVE" &&753    type !== "IS_CARD_DECLINED" &&754    type !== "SUBMIT_FEEDBACK"755  );756}757758function isAllowedCanaryWebhookUrl(value: string): boolean {759  try {760    const url = new URL(value);761    if (url.protocol !== "https:") return false;762763    const hostname = url.hostname.toLowerCase();764    if (765      hostname === "localhost" ||766      hostname.endsWith(".localhost") ||767      isPrivateIpv4(hostname) ||768      isPrivateIpv6(hostname)769    ) {770      return false;771    }772773    return true;774  } catch {775    return false;776  }777}778779function isPrivateIpv4(hostname: string): boolean {780  if (PRIVATE_IPV4_RANGES.some((range) => hostname.startsWith(range.prefix))) {781    return true;782  }783784  const octets = hostname.split(".").map((part) => Number(part));785  if (octets.length !== 4 || octets.some((octet) => !Number.isInteger(octet) || octet < 0 || octet > 255)) {786    return false;787  }788789  return octets[0] === 172 && octets[1] >= 16 && octets[1] <= 31;790}791792function isPrivateIpv6(hostname: string): boolean {793  const normalized = hostname.replace(/^\[|\]$/g, "").toLowerCase();794  return (795    normalized === "::1" ||796    normalized.startsWith("fc") ||797    normalized.startsWith("fd") ||798    normalized.startsWith("fe80:")799  );800}