index.ts

1import {2  detectCardForm,3  detectLoginFields,4  findOTPDigitBoxGroup,5  getDeepActiveInput,6  getPageDomain,7  isAnyCredentialForm,8  isEmailFirstForm,9  isLoginForm,10  isSignupForm,11  isTOTPField,12  isVisible,13} from "./detect";14import {15  CardSelectorEntry,16  injectFieldIcon,17  SelectorEntry,18  showAutofillSelector,19  showCardSelector,20  showPasskeyAvailable,21  showPasskeyProGate,22  showPasskeyRegistrationOffer,23  showRememberSiteToast,24  showTOTPSelector,25} from "./inject";26import { detectBrowser } from "../shared/browser";27import { FIREFOX_USE_CONTENT_SCRIPT_PROXY } from "../shared/passkey-flags";28import { fillCardForm, fillFields, fillOTPDigitBoxes, fillTOTPCode, setNativeValue } from "./fill";29import { setupSaveDetection } from "./save";30import { contentMLDetector } from "./content-ml-detector";31import { detectPasswordPolicy } from "./policy";32import type { FieldPrediction } from "../shared/ml";33import type { SavedIdentity, VaultEntry } from "../shared/types";3435// WeakMap (not WeakSet) — we keep the per-input cleanup callback as the value36// so we can tear down listeners if we ever need to re-process the same field.37// When the input is GC'd (SPA nav, React re-render), the map entry goes with38// it and we can re-inject without leaking the old handler.39const processedInputs = new WeakMap<HTMLInputElement, () => void>();40const AUTOFILL_FIELD_TYPES = new Set(["password", "username", "email"]);4142let currentDismiss: (() => void) | null = null;43// Field whose selector is currently open — used to avoid dismiss+reopen flicker44let currentAnchorField: HTMLInputElement | null = null;45// Prevents two concurrent handleFieldInteraction calls for the same field46const pendingInteractions = new WeakSet<HTMLInputElement>();47// Tracks the last field the user explicitly dismissed (Escape / click-outside / Tab).48// Suppresses spurious reopens until focus moves to a different field. Layer 149// of the dismissal model — see Projects.md §4.12.50let lastDismissedField: HTMLInputElement | null = null;5152// ── Dismissal lock (Layer 2) ────────────────────────────────────────53// After any user-initiated dismiss, briefly block ALL reopens regardless of54// which field is focused. Catches the case where a page rapidly moves focus55// between fields after Escape — without this, focus moving to a SECOND field56// in <100ms would re-trigger the popup before the user finished dismissing.57const DISMISS_LOCK_MS = 800;58let dismissLock = false;59let dismissLockTimer: ReturnType<typeof setTimeout> | null = null;60// Set when the inline popup was summoned specifically for a passkey-unlock61// flow. The VAULT_UNLOCKED handler checks this to skip re-triggering autofill62// (the passkey toast handles the next step instead).63let passkeySummonActive = false;64// Set while the passkey approval toast is visible. Prevents handleFieldInteraction65// from opening the autofill selector alongside it. Cleared by a window message66// posted by inject.tsx when the toast closes (and by DISMISS_PASSKEY_TOAST).67let passkeyToastActive = false;68function startDismissLock(): void {69  dismissLock = true;70  if (dismissLockTimer) clearTimeout(dismissLockTimer);71  dismissLockTimer = setTimeout(() => { dismissLock = false; }, DISMISS_LOCK_MS);72}73function canOpen(): boolean { return !dismissLock; }7475// ── Fill-success lock ───────────────────────────────────────────────76// After Peach autofills a form, the popup must NOT reappear on the filled77// fields, on the submit button (some sites refocus it briefly), or on any78// field in that form — even when host-page DOM mutations or the form's own79// validation flow refocus an input. Implemented as a WeakSet of forms plus80// a page-level timestamp:81//   - filledForms: every form Peach has filled this page session. Survives82//     until the form leaves the DOM (WeakSet GC).83//   - pageFilledAt: timestamp of last fill. Used as a 3s belt-and-suspenders84//     window for fields that aren't inside a <form> element (some SPAs).85// SPA navigation resets pageFilledAt via the urlObserver below; filledForms86// self-empties as old form elements get GC'd.87const filledForms = new WeakSet<HTMLFormElement>();88let pageFilledAt: number | null = null;89const PAGE_FILL_GRACE_MS = 3000;9091function recordFillSuccess(...fields: (HTMLInputElement | null | undefined)[]): void {92  for (const f of fields) {93    if (!f) continue;94    const form = f.closest("form");95    if (form) filledForms.add(form);96  }97  pageFilledAt = Date.now();98}99100function wasAlreadyFilled(field: HTMLInputElement): boolean {101  const form = field.closest("form");102  if (form && filledForms.has(form)) return true;103  if (pageFilledAt !== null && Date.now() - pageFilledAt < PAGE_FILL_GRACE_MS) return true;104  return false;105}106107function clearFillStateForExplicitSummon(field: HTMLInputElement): void {108  const form = field.closest("form");109  if (form) filledForms.delete(form);110  pageFilledAt = null;111}112113// Some sites briefly focus the submit button when the user clicks it (visual114// feedback, blur/focus dance for validation animations). Catch those at the115// focusin layer so we don't re-trigger handleFieldInteraction for an event116// target that was never going to be a credential field anyway.117function isSubmitButton(el: EventTarget | null): boolean {118  if (!(el instanceof HTMLElement)) return false;119  if (el instanceof HTMLButtonElement && el.type !== "button") return true;120  if (el instanceof HTMLInputElement && el.type === "submit") return true;121  if (el.getAttribute("type") === "submit") return true;122  const text = (el.textContent?.trim() ?? el.getAttribute("value") ?? "").toLowerCase();123  if (!text || text.length > 24) return false;124  return /^(submit|sign[ -]?in|log[ -]?in|continue|next|go)$/i.test(text);125}126127function debounce<T extends (...args: unknown[]) => void>(128  fn: T,129  ms: number130): (...args: Parameters<T>) => void {131  let timer: ReturnType<typeof setTimeout>;132  return (...args: Parameters<T>) => {133    clearTimeout(timer);134    timer = setTimeout(() => fn(...args), ms);135  };136}137138function showToast(message: string): void {139  const toast = document.createElement("div");140  toast.style.cssText = `141    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);142    background: #131109; color: #F0E8D8; padding: 8px 16px;143    border-radius: 8px; font-family: 'IBM Plex Mono', monospace;144    font-size: 11px; z-index: 2147483647; opacity: 0;145    transition: opacity 200ms ease;146    border: 1px solid rgba(240,232,216,0.07);147    pointer-events: none;148  `;149  toast.textContent = message;150  document.body.appendChild(toast);151  requestAnimationFrame(() => { toast.style.opacity = "1"; });152  setTimeout(() => {153    toast.style.opacity = "0";154    setTimeout(() => toast.remove(), 200);155  }, 2000);156}157158function showSearchPalette(): void {159  const host = document.createElement("div");160  host.style.cssText = "position:fixed;top:80px;left:50%;transform:translateX(-50%);z-index:2147483647;width:340px;";161  document.body.appendChild(host);162  const shadow = host.attachShadow({ mode: "closed" });163164  const style = document.createElement("style");165  style.textContent = `166    .p{background:#131109;border:1px solid rgba(240,232,216,.12);border-radius:12px;167      font-family:'IBM Plex Mono',monospace;font-size:12px;color:#F0E8D8;168      box-shadow:0 8px 24px rgba(0,0,0,.5);overflow:hidden}169    .h{padding:10px 12px 8px;border-bottom:1px solid rgba(240,232,216,.08);170      font-size:11px;color:rgba(240,232,216,.5);display:flex;justify-content:space-between;align-items:center}171    .x{background:none;border:none;color:rgba(240,232,216,.4);cursor:pointer;font-size:14px;padding:0;line-height:1}172    .s{padding:8px 12px}173    .s input{width:100%;box-sizing:border-box;background:rgba(240,232,216,.06);174      border:1px solid rgba(240,232,216,.12);border-radius:6px;color:#F0E8D8;175      padding:6px 8px;font-family:inherit;font-size:12px;outline:none}176    .l{max-height:220px;overflow-y:auto}177    .e{padding:8px 12px;cursor:pointer;display:flex;flex-direction:column;gap:2px}178    .e:hover{background:rgba(240,232,216,.06)}179    .et{font-size:12px}180    .eu{font-size:10px;color:rgba(240,232,216,.45)}181    .em{padding:12px;color:rgba(240,232,216,.4);text-align:center}182  `;183184  let allEntries: SelectorEntry[] = [];185  let query = "";186187  const panel = document.createElement("div");188  panel.className = "p";189190  const hdr = document.createElement("div");191  hdr.className = "h";192  const hdrText = document.createElement("span");193  hdrText.textContent = "No form detected — search your vault";194  const closeBtn = document.createElement("button");195  closeBtn.className = "x";196  closeBtn.textContent = "✕";197  hdr.appendChild(hdrText);198  hdr.appendChild(closeBtn);199200  const searchWrap = document.createElement("div");201  searchWrap.className = "s";202  const searchInput = document.createElement("input");203  searchInput.placeholder = "search...";204  searchWrap.appendChild(searchInput);205206  const list = document.createElement("div");207  list.className = "l";208209  panel.appendChild(hdr);210  panel.appendChild(searchWrap);211  panel.appendChild(list);212  shadow.appendChild(style);213  shadow.appendChild(panel);214215  function close() { host.remove(); }216217  closeBtn.onclick = close;218219  function onKeyDown(e: KeyboardEvent) {220    if (e.key === "Escape") { close(); document.removeEventListener("keydown", onKeyDown, true); }221  }222  document.addEventListener("keydown", onKeyDown, true);223224  function render() {225    const q = query.toLowerCase();226    const filtered = q227      ? allEntries.filter(e => e.title.toLowerCase().includes(q) || (e.username ?? "").toLowerCase().includes(q))228      : allEntries;229    list.innerHTML = "";230    if (filtered.length === 0) {231      const em = document.createElement("div");232      em.className = "em";233      em.textContent = query ? "no matches" : "vault is empty";234      list.appendChild(em);235      return;236    }237    for (const entry of filtered.slice(0, 20)) {238      const row = document.createElement("div");239      row.className = "e";240      const title = document.createElement("div");241      title.className = "et";242      title.textContent = entry.title;243      row.appendChild(title);244      if (entry.username) {245        const user = document.createElement("div");246        user.className = "eu";247        user.textContent = entry.username;248        row.appendChild(user);249      }250      row.onclick = async () => {251        const resp = await chrome.runtime.sendMessage({ type: "GET_ENTRY_FOR_FILL", payload: { id: entry.id } });252        const r = resp as { ok: boolean; data?: { password?: string } };253        if (r.ok && r.data?.password) {254          let alreadyWritten = false;255          try {256            await navigator.clipboard.writeText(r.data.password);257            alreadyWritten = true;258          } catch (err) {259            console.warn("[Peach] clipboard write denied:", err);260          }261          const copyResp = await chrome.runtime.sendMessage({262            type: "COPY",263            payload: { text: r.data.password, label: "Password", alreadyWritten },264          }) as { ok?: boolean } | undefined;265          if (alreadyWritten || copyResp?.ok) {266            showToast("Password copied");267          } else {268            showToast("Could not copy password — clipboard blocked");269          }270        } else {271          showToast("Could not copy password");272        }273        close();274        document.removeEventListener("keydown", onKeyDown, true);275      };276      list.appendChild(row);277    }278  }279280  searchInput.oninput = () => { query = searchInput.value; render(); };281282  fetchAutofillEntries(getPageDomain(), true).then(result => {283    if (result.locked) { showToast("Vault is locked — open Peach to unlock"); close(); return; }284    allEntries = result.entries;285    render();286    searchInput.focus();287  });288}289290function findTOTPField(root: Document | Element = document): HTMLInputElement | null {291  const inputs = root.querySelectorAll<HTMLInputElement>("input");292  for (const input of inputs) {293    if (isTOTPField(input)) return input;294  }295  return null;296}297298function findSameLoginTOTPField(passwordEl: HTMLInputElement): HTMLInputElement | null {299  const form = passwordEl.closest("form");300  return findTOTPField(form ?? document);301}302303304async function handleAutofill(305  _field: HTMLInputElement,306  usernameEl: HTMLInputElement | null,307  passwordEl: HTMLInputElement | null,308  entry: VaultEntry309): Promise<HTMLInputElement | null> {310  if (!entry.username && !entry.password) return null;311  const pageDomain = getPageDomain();312  const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;313  fillFields(usernameEl, passwordEl, entry.username ?? "", entry.password ?? "", form, pageDomain);314  let filledTOTPField: HTMLInputElement | null = null;315316  if (entry.canary) {317    chrome.runtime.sendMessage({318      type: "FIRE_CANARY_PING",319      payload: {320        webhookUrl: entry.canary.webhookUrl,321        entryTitle: entry.title,322        trigger: "autofilled",323      },324    }).catch(() => {});325    chrome.runtime.sendMessage({326      type: "UPDATE_ENTRY",327      payload: {328        id: entry.id,329        patch: {330          canary: {331            ...entry.canary,332            lastPinged: Date.now(),333            pingCount: (entry.canary.pingCount ?? 0) + 1,334          },335        },336      },337    }).catch(() => {});338  }339340  // The background sends a freshly-generated 6-digit code (totpCode), never the341  // base32 seed (SEV-3-C). Fill the code straight in.342  const totpCode = (entry as { totpCode?: string }).totpCode;343  if (totpCode) {344    const code = totpCode;345    const totpField = passwordEl ? findSameLoginTOTPField(passwordEl) : null;346    if (fillTOTPCode(totpField, code)) {347      filledTOTPField = totpField;348    }349    let alreadyWritten = false;350    try {351      await navigator.clipboard.writeText(code);352      alreadyWritten = true;353    } catch (err) {354      console.warn("[Peach] clipboard write denied:", err);355    }356    const response = await chrome.runtime.sendMessage({357      type: "COPY",358      payload: { text: code, label: "TOTP", alreadyWritten },359    });360    if (filledTOTPField) {361      showToast("2FA code filled");362    } else if (alreadyWritten || (response as { ok?: boolean }).ok) {363      showToast("TOTP copied · " + code);364    } else {365      showToast("Could not copy TOTP — clipboard blocked");366    }367  }368369  return filledTOTPField;370}371372async function fetchAutofillEntries(373  domain: string,374  includeAll = false375): Promise<{ entries: SelectorEntry[]; locked: boolean }> {376  const response = await chrome.runtime.sendMessage({377    type: "AUTOFILL_QUERY",378    payload: { domain, includeAll },379  });380  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };381  if (!res.ok && res.error === "vault_locked") {382    return { entries: [], locked: true };383  }384  return { entries: res.data ?? [], locked: false };385}386387async function fetchTOTPEntries(388  domain: string389): Promise<{ entries: SelectorEntry[]; locked: boolean }> {390  const response = await chrome.runtime.sendMessage({391    type: "AUTOFILL_QUERY",392    payload: { domain, kind: "totp" },393  });394  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };395  if (!res.ok && res.error === "vault_locked") {396    return { entries: [], locked: true };397  }398  return { entries: res.data ?? [], locked: false };399}400401402function resolveAutofillFieldType(403  el: HTMLInputElement,404  predictedType?: FieldPrediction["type"] | null405): "password" | "username" | "email" | null {406  if (407    predictedType === "password" ||408    predictedType === "username" ||409    predictedType === "email"410  ) {411    return predictedType;412  }413414  const detected = detectLoginFields().find((field) => field.el === el)?.type;415  if (detected && AUTOFILL_FIELD_TYPES.has(detected)) {416    return detected;417  }418419  const htmlType = el.type.toLowerCase();420  if (htmlType === "password") return "password";421  if (htmlType === "email") return "email";422  return null;423}424425async function openAutofillSelector(426  anchorField: HTMLInputElement,427  usernameEl: HTMLInputElement | null,428  passwordEl: HTMLInputElement | null,429  domainEntries: SelectorEntry[],430  searchableEntries: SelectorEntry[],431  domain: string432): Promise<void> {433  // No saved entries for this site → signup/new-account mode.434  // Fetch vault identities for the identity-first surface and locate435  // the confirm-password field so "Copy & fill" can populate it too.436  const isSignup = domainEntries.length === 0;437  let savedIdentities: SavedIdentity[] | undefined;438  let confirmEl: HTMLInputElement | null = null;439  if (isSignup) {440    try {441      const idResp = await chrome.runtime.sendMessage({ type: "GET_IDENTITIES" }).catch(() => null) as442        { ok: boolean; data?: SavedIdentity[] } | null;443      if (idResp?.ok && Array.isArray(idResp.data)) savedIdentities = idResp.data;444    } catch { /* silent fallback */ }445446    const form = (passwordEl ?? usernameEl)?.closest("form") ?? document.body;447    const allPwInputs = Array.from(form.querySelectorAll<HTMLInputElement>("input[type='password']"));448    confirmEl = allPwInputs.find(449      (el) => el !== passwordEl && /confirm|repeat|verify/i.test(el.name + el.id + el.placeholder)450    ) ?? (allPwInputs.length >= 2 ? allPwInputs.find((el) => el !== passwordEl) ?? null : null);451  }452453  currentDismiss?.();454  currentAnchorField = anchorField;455  currentDismiss = showAutofillSelector(456    anchorField,457    domainEntries,458    async (id: string) => {459      currentDismiss = null;460      currentAnchorField = null;461      const entryResponse = await chrome.runtime.sendMessage({462        type: "GET_ENTRY_FOR_FILL",463        payload: { id },464      });465      const entry = (entryResponse as { ok: boolean; data?: VaultEntry }).data;466      if (entry) {467        const filledTOTPField = await handleAutofill(anchorField, usernameEl, passwordEl, entry);468        recordFillSuccess(anchorField, usernameEl, passwordEl, filledTOTPField);469        // Offer to remember the current site for this entry only if none of470        // its known domains (primary + additional) match — otherwise the471        // user already mapped it and the prompt would be noise.472        const pageDomain = location.hostname.replace(/^www\./, "");473        const entryDomains = new Set<string>();474        for (const u of [entry.url, ...(entry.additionalUrls ?? [])]) {475          try {476            if (u) entryDomains.add(new URL(u).hostname.replace(/^www\./, ""));477          } catch { /* ignore unparseable */ }478        }479        if (pageDomain && entryDomains.size > 0 && !entryDomains.has(pageDomain)) {480          showRememberSiteToast(pageDomain, entry.id);481        }482      }483    },484    {485      domain,486      searchableEntries,487      isSignup,488      savedIdentities,489      onFillFields: (username, password) => {490        const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;491        fillFields(usernameEl, passwordEl, username, password, form, getPageDomain());492        if (password && confirmEl) setNativeValue(confirmEl, password);493        recordFillSuccess(anchorField, usernameEl, passwordEl);494      },495      onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },496    }497  );498}499500async function openTOTPSelector(anchorField: HTMLInputElement, otpDigitBoxes?: HTMLInputElement[]): Promise<void> {501  if (!canOpen()) return;502  if (currentDismiss && currentAnchorField === anchorField) return;503  if (anchorField !== lastDismissedField) lastDismissedField = null;504  if (anchorField === lastDismissedField) return;505  if (wasAlreadyFilled(anchorField)) return;506507  const domain = getPageDomain();508  const result = await fetchTOTPEntries(domain);509510  if (result.locked) {511    currentDismiss?.();512    currentAnchorField = anchorField;513    currentDismiss = showAutofillSelector(514      anchorField,515      [],516      () => {},517      {518        domain,519        locked: true,520        onUnlocked: () => void openTOTPSelector(anchorField),521        onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },522      }523    );524    return;525  }526527  if (result.entries.length === 0) {528    lastDismissedField = anchorField;529    startDismissLock();530    showToast("No 2FA entries for this site — add a code in Peach first");531    return;532  }533534  currentDismiss?.();535  currentAnchorField = anchorField;536  currentDismiss = showTOTPSelector(537    anchorField,538    result.entries,539    async (id: string) => {540      try {541        const entryResponse = await chrome.runtime.sendMessage({542          type: "GET_ENTRY_FOR_FILL",543          payload: { id },544        }).catch(() => null) as { ok: boolean; data?: VaultEntry } | null;545        const entry = entryResponse?.ok ? entryResponse.data : undefined;546        const code = (entry as { totpCode?: string } | undefined)?.totpCode;547        if (!code) return;548        if (otpDigitBoxes && otpDigitBoxes.length > 1) {549          fillOTPDigitBoxes(otpDigitBoxes, code);550        } else {551          setNativeValue(anchorField, code);552        }553        recordFillSuccess(anchorField);554        showToast("2FA code filled");555      } finally {556        currentDismiss = null;557        currentAnchorField = null;558      }559    },560    {561      domain,562      onDismiss: () => {563        lastDismissedField = anchorField;564        startDismissLock();565        currentDismiss = null;566        currentAnchorField = null;567      },568    }569  );570}571572573async function handleFieldInteraction(anchorField?: HTMLInputElement | null): Promise<void> {574  const field = anchorField ?? getDeepActiveInput();575  if (!field) return;576  if (!isVisible(field)) return;577578  // Passkey toast is visible — don't open the credential selector alongside it.579  if (passkeyToastActive) return;580581  // Layer 2: post-dismiss global lock. Catches rapid focus moves between582  // fields immediately after Escape/click-outside.583  if (!canOpen()) return;584585  // If a selector is already open for this exact field, don't flicker it.586  if (currentDismiss && currentAnchorField === field) return;587588  // If focus moved to a different field, the previous per-field dismiss lock589  // no longer applies.590  if (field !== lastDismissedField) lastDismissedField = null;591  // Layer 1: the user explicitly dismissed this field's selector — don't592  // reopen it until focus has genuinely moved away and come back.593  if (field === lastDismissedField) return;594595  // Fill-success lock: Peach already filled this form (or fired a fill596  // anywhere on the page within the grace window). Sites often refocus an597  // input on submit click, on validation, or on a transition to a success598  // state — none of those should re-open the popup.599  if (wasAlreadyFilled(field)) return;600601  // Prevent two concurrent calls for the same field (e.g. focusin + icon click602  // firing simultaneously — the second call would dismiss the first's selector).603  if (pendingInteractions.has(field)) return;604  pendingInteractions.add(field);605606  try {607    // Multi-digit OTP entry: individual maxLength=1 boxes get no icon (too small)608    // but the TOTP selector opens on focus and fills every box at once.609    const otpGroup = findOTPDigitBoxGroup(field);610    if (otpGroup) {611      await openTOTPSelector(otpGroup[0]!, otpGroup);612      return;613    }614615    if (isTOTPField(field)) {616      const formFields = detectLoginFields();617      if (!isLoginForm(formFields) && !isSignupForm(formFields)) {618        await openTOTPSelector(field);619        return;620      }621    }622623    const fieldType = field.type.toLowerCase();624625    const mlPromise = contentMLDetector.predictBatch([field]).then((preds) => {626      return preds[0] ?? null;627    });628629    const mlPrediction = await new Promise<FieldPrediction | null>((resolve) => {630      const timeout = setTimeout(() => resolve(null), 150);631      mlPromise.then((pred) => {632        clearTimeout(timeout);633        resolve(pred);634      });635    });636637    if (passkeyToastActive) return;638639    if (fieldType !== "password" && mlPrediction && mlPrediction.type !== "username" && mlPrediction.type !== "email") {640      return;641    }642643    const autofillFieldType = resolveAutofillFieldType(field, mlPrediction?.type);644    if (autofillFieldType) {645      reattachListeners(field, autofillFieldType);646    }647648    let fields = detectLoginFields();649    if (!isAnyCredentialForm(fields)) {650      return;651    }652653    const domain = getPageDomain();654    const firstResult = await fetchAutofillEntries(domain);655    if (passkeyToastActive) return;656657    // Vault is locked — show an inline unlock prompt.658    // Re-triggering after unlock is handled by the VAULT_UNLOCKED message so659    // there is no double-trigger race between onUnlocked and the broadcast.660    if (firstResult.locked) {661      currentDismiss?.();662      currentAnchorField = field;663      currentDismiss = showAutofillSelector(664        field,665        [],666        () => {},667        { domain, locked: true, onDismiss: () => { lastDismissedField = field; startDismissLock(); } }668      );669      return;670    }671672    const entries = firstResult.entries;673    // Always fetch the vault-wide list so the inline popup's search affordance674    // can reach entries that don't match this domain — the user may have a675    // valid login filed under a different URL (e.g. corp account on a vanity676    // domain) and still want to fill it here.677    const allEntries = (await fetchAutofillEntries(domain, true)).entries;678679    if (passkeyToastActive) return;680681    let usernameEl: HTMLInputElement | null = null;682    const userField = fields.find((f) => f.type === "username" || f.type === "email");683    if (userField) usernameEl = userField.el;684    const pwField = fields.find((f) => f.type === "password");685    // For email-first flows there is no password field on this step — that is expected.686    if (!pwField && !isEmailFirstForm(fields)) return;687    const passwordEl = pwField?.el ?? null;688689    await openAutofillSelector(field, usernameEl, passwordEl, entries, allEntries, domain);690  } finally {691    pendingInteractions.delete(field);692  }693}694695async function onFocusIn(e: Event): Promise<void> {696  // Submit-button focus: catch the brief refocus some sites do when the697  // user clicks the login/submit button. Without this guard, that focus698  // event reaches handleFieldInteraction → getDeepActiveInput, and on699  // pages where the button is also a labelled <input> we briefly attempt700  // to open the popup over the very button the user just clicked.701  if (isSubmitButton(e.target)) return;702  await handleFieldInteraction();703}704705function reattachListeners(706  el: HTMLInputElement,707  detectedType?: "password" | "username" | "email",708  contextFields?: ReturnType<typeof detectLoginFields>709): void {710  if (processedInputs.has(el)) return;711  if (!resolveAutofillFieldType(el, detectedType)) return;712  // Only inject icon when a credential form is present on the page713  const fields = contextFields ?? detectLoginFields();714  if (!isAnyCredentialForm(fields)) return;715716  const cleanup = injectFieldIcon(el, () => {717    currentDismiss?.();718    currentDismiss = null;719    lastDismissedField = null; // icon click is an explicit user open — clear per-field lock720    dismissLock = false; // ...and the global lock721    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }722    clearFillStateForExplicitSummon(el);723    el.focus({ preventScroll: true });724    void handleFieldInteraction(el);725  });726  processedInputs.set(el, cleanup);727}728729const debouncedReattach = debounce(() => {730  const allFields = detectLoginFields();731  if (!isAnyCredentialForm(allFields)) return;732  const newFields = allFields.filter(733    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)734  );735  for (const f of newFields) {736    reattachListeners(f.el, f.type, allFields);737  }738  // 200ms debounce — below this, Peach and the host page's reactive layer739  // fight over the same layout properties every frame on React/Vue/Angular740  // login forms (v1.4.14 regression, Projects.md §4.7). Do not lower.741}, 200);742743function setupMutationObserver(): void {744  const observer = new MutationObserver(debouncedReattach);745  observer.observe(document.body, {746    childList: true,747    subtree: true,748    attributes: true,749    attributeFilter: ["type", "autocomplete", "name", "id", "placeholder", "hidden"],750  });751}752753function initialScan(aggressionLevel = 0, isFinalPass = false) {754  const allFields = detectLoginFields();755  const hasKnownForm = isAnyCredentialForm(allFields);756757  if (aggressionLevel === 0 && !hasKnownForm) return;758759  const newFields = allFields.filter(760    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)761  );762763  for (const f of newFields) {764    reattachListeners(f.el, f.type, allFields);765  }766767  // Level 2, final pass: inject icon on any visible password field even if768  // the form-context gate in reattachListeners would normally skip it.769  if (aggressionLevel >= 2 && isFinalPass && newFields.length === 0) {770    const pwInputs = document.querySelectorAll<HTMLInputElement>('input[type="password"]');771    for (const el of pwInputs) {772      if (isVisible(el) && !processedInputs.has(el)) {773        const cleanup = injectFieldIcon(el, () => {774          currentDismiss?.();775          currentDismiss = null;776          lastDismissedField = null;777          dismissLock = false;778          if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }779          clearFillStateForExplicitSummon(el);780          el.focus({ preventScroll: true });781          void handleFieldInteraction(el);782        });783        processedInputs.set(el, cleanup);784      }785    }786  }787}788789// ── TOTP-only fields ───────────────────────────────────────────────────────790// After a username/password submission, many sites swap the whole form for a791// lone "verification code" input. The credential selector intentionally gates792// on login/signup forms, so TOTP fields need a narrow path of their own.793const processedTOTPInputs = new WeakMap<HTMLInputElement, () => void>();794795function hasLoginOrSignupForm(): boolean {796  const fields = detectLoginFields();797  return isAnyCredentialForm(fields);798}799800function injectTOTPFieldIcon(field: HTMLInputElement): void {801  if (processedTOTPInputs.has(field)) return;802  const cleanup = injectFieldIcon(field, () => {803    currentDismiss?.();804    currentDismiss = null;805    currentAnchorField = null;806    lastDismissedField = null;807    dismissLock = false;808    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }809    clearFillStateForExplicitSummon(field);810    field.focus({ preventScroll: true });811    void openTOTPSelector(field);812  });813  processedTOTPInputs.set(field, cleanup);814}815816function scanTOTPFields(): void {817  if (hasLoginOrSignupForm()) return;818  const inputs = document.querySelectorAll<HTMLInputElement>("input");819  for (const input of inputs) {820    if (!isTOTPField(input)) continue;821    injectTOTPFieldIcon(input);822  }823}824825function setupTOTPAutofill(): void {826  setTimeout(scanTOTPFields, 0);827  setTimeout(scanTOTPFields, 500);828  setTimeout(scanTOTPFields, 1500);829830  const debouncedScan = debounce(scanTOTPFields, 200);831  new MutationObserver(debouncedScan).observe(document.body, {832    childList: true,833    subtree: true,834    attributes: true,835    attributeFilter: ["autocomplete", "name", "id", "placeholder", "hidden"],836  });837838  document.addEventListener("focusin", (e) => {839    const target = e.target;840    if (!(target instanceof HTMLInputElement)) return;841    if (hasLoginOrSignupForm()) return;842    if (!isTOTPField(target)) return;843    injectTOTPFieldIcon(target);844  }, true);845}846847document.addEventListener("focusin", onFocusIn);848849setupMutationObserver();850setupTOTPAutofill();851setupSaveDetection();852setupCardAutofill();853854// SPA navigation reset: the content script does not reload across in-app855// route changes (history.pushState, hash navigation, framework routers).856// When the URL changes we clear the page-level fill timestamp so the next857// page works normally; filledForms (a WeakSet) self-empties as old form858// elements leave the DOM. subtree:false because route swaps reliably859// mutate document.body's direct children — subtree:true would fire on860// every internal DOM update and cost us a re-check per mutation.861let lastObservedUrl = location.href;862new MutationObserver(() => {863  if (location.href !== lastObservedUrl) {864    lastObservedUrl = location.href;865    pageFilledAt = null;866  }867}).observe(document.body, { childList: true, subtree: false });868869// Async init: check recall map before running the initial scans so we can870// apply the right aggression level for domains the user has needed before.871(async () => {872  let aggressionLevel = 0;873  try {874    const resp = await chrome.runtime.sendMessage({ type: "GET_SETTINGS" });875    const s = (resp as { ok: boolean; data?: { manualSummonDomains?: Record<string, { summonCount: number }> } }).data;876    const domain = getPageDomain();877    const record = domain ? s?.manualSummonDomains?.[domain] : undefined;878    aggressionLevel = !record ? 0 : record.summonCount >= 2 ? 2 : 1;879  } catch { /* SW may be starting up; proceed with normal scan */ }880881  setTimeout(() => initialScan(aggressionLevel, false), 0);882  setTimeout(() => initialScan(aggressionLevel, false), 500);883  setTimeout(() => initialScan(aggressionLevel, true), 1500);884})();885886// ── Card autofill (State 7) ─────────────────────────────────────────887// Card forms get a parallel injection path. The login icon-injection gate888// in reattachListeners deliberately skips non-text fields, so we wire889// cards independently rather than retrofit AUTOFILL_FIELD_TYPES — keeping890// card detection contained makes the boundary easy to follow.891const processedCardInputs = new WeakMap<HTMLInputElement, () => void>();892let currentCardDismiss: (() => void) | null = null;893let currentCardAnchor: HTMLInputElement | null = null;894let lastDismissedCardField: HTMLInputElement | null = null;895896async function fetchSavedCards(): Promise<CardSelectorEntry[]> {897  const resp = await chrome.runtime.sendMessage({898    type: "AUTOFILL_QUERY",899    payload: { domain: getPageDomain(), kind: "card" },900  }).catch(() => null);901  const r = resp as { ok: boolean; data?: CardSelectorEntry[] } | null;902  return r?.ok ? (r.data ?? []) : [];903}904905async function openCardSelector(anchor: HTMLInputElement): Promise<void> {906  if (!canOpen()) return;907  if (currentCardDismiss && currentCardAnchor === anchor) return;908  if (anchor === lastDismissedCardField) return;909  if (anchor !== lastDismissedCardField) lastDismissedCardField = null;910  if (wasAlreadyFilled(anchor)) return;911912  const cards = await fetchSavedCards();913  if (cards.length === 0) return; // no saved cards → nothing to offer914915  const cardForm = detectCardForm();916  if (!cardForm?.number) return;917918  currentCardDismiss?.();919  currentCardAnchor = anchor;920  currentCardDismiss = showCardSelector(921    anchor,922    cards,923    {924      domain: getPageDomain(),925      onFill: (entry) => {926        if (!cardForm) return;927        fillCardForm(cardForm, {928          cardNumber: entry.cardNumber ?? "",929          expMonth: entry.expMonth ?? "",930          expYear: entry.expYear ?? "",931          cvc: entry.cvc ?? "",932          cardholderName: entry.cardholderName ?? "",933        });934        // All four card field types share the same form — recording the935        // number field's form is sufficient to suppress reopens on any of936        // them via wasAlreadyFilled().937        recordFillSuccess(cardForm.number, cardForm.cvc, cardForm.expiryCombo, cardForm.name);938        currentCardDismiss = null;939        currentCardAnchor = null;940      },941      onDismiss: () => {942        lastDismissedCardField = anchor;943        startDismissLock();944        currentCardDismiss = null;945        currentCardAnchor = null;946      },947    }948  );949}950951function injectCardIcon(field: HTMLInputElement): void {952  if (processedCardInputs.has(field)) return;953  const cleanup = injectFieldIcon(field, () => {954    currentCardDismiss?.();955    currentCardDismiss = null;956    lastDismissedCardField = null;957    dismissLock = false;958    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }959    clearFillStateForExplicitSummon(field);960    field.focus({ preventScroll: true });961    void openCardSelector(field);962  });963  processedCardInputs.set(field, cleanup);964}965966function setupCardAutofill(): void {967  function scan() {968    const cardForm = detectCardForm();969    if (!cardForm?.number) return;970    if (!isVisible(cardForm.number)) return;971    injectCardIcon(cardForm.number);972  }973974  // Initial detection sweep — same retry cadence as login fields so975  // late-hydrating SPA checkout pages get caught.976  setTimeout(scan, 0);977  setTimeout(scan, 500);978  setTimeout(scan, 1500);979980  // Re-scan on DOM mutation (separate from the login MutationObserver981  // because card forms typically appear on a single navigation event,982  // not field-by-field — coarser observation is sufficient here).983  let pending = false;984  new MutationObserver(() => {985    if (pending) return;986    pending = true;987    setTimeout(() => { pending = false; scan(); }, 200);988  }).observe(document.body, { childList: true, subtree: true });989990  // Field-focus path: on focus of a cc-number input, ensure icon is991  // present and consider opening the selector when the user explicitly992  // clicks into the card number field.993  document.addEventListener("focusin", (e) => {994    const target = e.target;995    if (!(target instanceof HTMLInputElement)) return;996    const cardForm = detectCardForm();997    if (cardForm?.number === target) {998      injectCardIcon(target);999    }1000  }, true);1001}10021003chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {1004  // Ignore anything not originating from our own background/service worker.1005  if (sender.id !== chrome.runtime.id) return;1006  if (msg?.type === "GET_SITE_PASSWORD_POLICY") {1007    const policy = detectPasswordPolicy();1008    sendResponse({ ok: true, data: policy });1009    return true;1010  }1011  if (msg?.type === "PING") {1012    sendResponse({ ok: true });1013    return true;1014  }1015  if (msg?.type === "SUMMON_AUTOFILL") {1016    const source = (msg as { type: string; source?: string }).source;1017    const isShortcut = source === "shortcut";1018    const isPasskeyUnlock = source === "passkey-unlock";10191020    const activeInput = getDeepActiveInput();1021    const fields = detectLoginFields();1022    const hasForm = isAnyCredentialForm(fields);10231024    if (hasForm) {1025      // Prefer the currently focused field if it's a login field, otherwise1026      // fall back to the first password field, then username/email.1027      const inForm = activeInput && fields.some(f => f.el === activeInput);1028      const target = inForm1029        ? activeInput1030        : (fields.find(f => f.type === "password")?.el1031            ?? fields.find(f => f.type === "username" || f.type === "email")?.el);1032      if (target) {1033        // Explicit user summon (shortcut or extension button) — bypass all1034        // suppression layers. The user is asking for the popup right now.1035        clearFillStateForExplicitSummon(target);1036        dismissLock = false;1037        if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1038        lastDismissedField = null;1039        void handleFieldInteraction(target);1040      }1041    } else if (isPasskeyUnlock) {1042      // Vault is locked during a passkey GET request. Show the inline unlock1043      // prompt anchored to whatever element is focused on the page (typically1044      // the passkey/sign-in button the user just tapped).1045      const anchor = (document.activeElement instanceof HTMLElement && document.activeElement !== document.body)1046        ? document.activeElement as unknown as HTMLInputElement1047        : null;1048      if (anchor) {1049        currentDismiss?.();1050        currentAnchorField = null;1051        passkeySummonActive = true;1052        currentDismiss = showAutofillSelector(anchor, [], () => {}, {1053          domain: getPageDomain(),1054          locked: true,1055          onDismiss: () => { passkeySummonActive = false; },1056        });1057      }1058    } else if (isShortcut) {1059      // Shortcut on a page with no login form — show clipboard-copy search mode.1060      showSearchPalette();1061    }10621063    // Record this domain for the recall system when triggered via shortcut.1064    if (isShortcut) {1065      const domain = getPageDomain();1066      if (domain) {1067        chrome.runtime.sendMessage({ type: "RECORD_MANUAL_SUMMON", payload: { domain } }).catch(() => {});1068      }1069    }10701071    sendResponse({ ok: hasForm || isShortcut || isPasskeyUnlock });1072    return true;1073  }1074  if (msg?.type === "PASSKEY_PRO_GATE") {1075    // Background rejected a passkey request for a free user. Show State 111076    // so they know what happened and can choose to upgrade.1077    showPasskeyProGate();1078    sendResponse({ ok: true });1079    return true;1080  }1081  if (msg?.type === "SHOW_PASSKEY_TOAST") {1082    // Block autofill selector for the lifetime of the toast and dismiss anything open.1083    passkeyToastActive = true;1084    if (currentDismiss) {1085      currentDismiss();1086      currentDismiss = null;1087      currentAnchorField = null;1088    }1089    return false; // inject.tsx owns the toast and calls sendResponse1090  }1091  if (msg?.type === "DISMISS_PASSKEY_TOAST") {1092    passkeyToastActive = false;1093    return false; // inject.tsx handles the actual dismissal1094  }1095  if (msg?.type === "VAULT_UNLOCKED") {1096    if (passkeySummonActive) {1097      // This unlock was for a pending passkey GET request. Just dismiss the1098      // inline popup — the passkey approval toast takes over from here.1099      passkeySummonActive = false;1100      if (currentDismiss) {1101        currentDismiss();1102        currentDismiss = null;1103        currentAnchorField = null;1104      }1105      sendResponse({ ok: true });1106      return true;1107    }1108    // Normal autofill path: close the locked-state prompt and re-open with1109    // fresh entry data at the same anchor field.1110    const savedField = currentAnchorField;1111    if (currentDismiss) {1112      currentDismiss();1113      currentDismiss = null;1114      currentAnchorField = null;1115    }1116    void handleFieldInteraction(savedField ?? undefined);1117    sendResponse({ ok: true });1118    return true;1119  }1120  return true;1121});11221123// inject.tsx posts this when the passkey toast closes (approve, deny, or timeout)1124// so we know it's safe to allow autofill again.1125window.addEventListener("message", (e: MessageEvent) => {1126  // Reject postMessages from cross-frame senders — only the same window's1127  // injected toast may flip this flag.1128  if (e.source !== window) return;1129  const d = e.data as { source?: string; type?: string } | undefined;1130  if (d?.source === "peach-passkey-toast" && d?.type === "toast-closed") {1131    passkeyToastActive = false;1132  }1133});11341135// ── Firefox passkey detection bridge (legacy observer path) ─────────────1136//1137// Pre-v2.12.0 the MAIN-world `passkeys-firefox.ts` was an observer — it1138// emitted `peach-passkey-firefox` postMessages so this content script could1139// surface State 12 (an inline "Save passkey to Peach" offer). v2.12.01140// replaced the observer with a full interception proxy (the page never1141// reaches a real navigator.credentials.create on Firefox anymore), and the1142// approval UI is opened by the background as part of the ceremony itself.1143// When the proxy is active the offer would be redundant noise, so the1144// listener gates on the flag. Once the proxy is removed (Firefox ships1145// webAuthenticationProxy) this whole block goes too.1146if (!FIREFOX_USE_CONTENT_SCRIPT_PROXY) {1147  let lastPasskeyOfferAt = 0;1148  const PASSKEY_OFFER_COOLDOWN_MS = 30_000;11491150  window.addEventListener("message", (event: MessageEvent) => {1151    if (event.source !== window) return;1152    const data = event.data as { source?: string; type?: string; rpId?: string; rpName?: string; userName?: string; userDisplayName?: string } | undefined;1153    if (!data || data.source !== "peach-passkey-firefox") return;1154    if (detectBrowser() !== "firefox") return;1155    if (data.type !== "create") return;11561157    // Cooldown: a single page interaction can fire multiple credentials.create1158    // calls. Show the offer at most once per 30 seconds per page session.1159    const now = Date.now();1160    if (now - lastPasskeyOfferAt < PASSKEY_OFFER_COOLDOWN_MS) return;1161    lastPasskeyOfferAt = now;11621163    const domain = location.hostname.replace(/^www\./, "");1164    chrome.runtime.sendMessage({1165      type: "GET_PASSKEY_OFFER_DECLINED",1166      payload: { domain },1167    }).then((res: { ok: boolean; data?: boolean } | undefined) => {1168      if (res?.data === true) return;1169      const rpId = data.rpId ?? domain;1170      showPasskeyRegistrationOffer({1171        rpId,1172        rpName: data.rpName,1173        userName: data.userName,1174        userDisplayName: data.userDisplayName,1175      });1176    }).catch(() => {});1177  });1178}11791180// Surface State 11 (passkey-available) only when it adds value:1181//   - Cross-browser entry: Chrome passkey on Firefox or vice versa — neither1182//     browser will auto-route, so the banner explains the re-register need.1183//   - Firefox + same-browser entry: Firefox has no equivalent of1184//     webAuthenticationProxy, so without a banner the user has no signal that1185//     Peach is the source.1186// On Chrome with a same-browser entry: skip — webAuthenticationProxy handles1187// the page's own credentials.get transparently and the popup approval view1188// already surfaces it. A banner here would just be noise.1189//1190// Dedupe across navigation: each navigation re-injects this content script.1191// chrome.storage.session keyed by domain is the natural per-tab/per-session1192// memory; session storage clears when the user closes the browser.1193{1194  function checkPasskeyAvailability() {1195    const domain = location.hostname.replace(/^www\./, "");1196    if (!domain) return;1197    const sessionKey = `peach_state11_shown:${domain}`;1198    chrome.storage.session?.get(sessionKey).then((stored) => {1199      if (stored && (stored as Record<string, unknown>)[sessionKey]) return;1200      chrome.runtime.sendMessage({1201        type: "GET_PASSKEY_FOR_DOMAIN",1202        payload: { domain },1203      }).then((res: { ok: boolean; data?: { rpId: string; userName: string; browser?: "chrome" | "firefox" } | null } | undefined) => {1204        const data = res?.data;1205        if (!data) return;1206        const current = detectBrowser();1207        const isCrossBrowser =1208          data.browser && current !== "unknown" && data.browser !== current;1209        const valuableOnFirefox = current === "firefox";1210        if (!isCrossBrowser && !valuableOnFirefox) return;1211        chrome.storage.session?.set({ [sessionKey]: Date.now() }).catch(() => {});1212        showPasskeyAvailable({1213          rpId: data.rpId,1214          userName: data.userName,1215          fromBrowser: data.browser,1216          currentBrowser: current,1217        });1218      }).catch(() => {});1219    }).catch(() => {});1220  }12211222  // Defer until DOM is interactive — content_scripts run at document_idle but1223  // some pages still mutate visibly afterwards. A short delay also avoids1224  // surfacing the State 11 toast while the user is in the middle of typing.1225  if (document.readyState === "loading") {1226    document.addEventListener("DOMContentLoaded", () => setTimeout(checkPasskeyAvailability, 800));1227  } else {1228    setTimeout(checkPasskeyAvailability, 800);1229  }1230}