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 { resolveAutofillInteractionTargets } from "./interaction";30import { setupSaveDetection } from "./save";31import { contentMLDetector } from "./content-ml-detector";32import { detectPasswordPolicy } from "./policy";33import type { FieldPrediction } from "../shared/ml";34import type { SavedIdentity, VaultEntry } from "../shared/types";3536// WeakMap (not WeakSet) — we keep the per-input cleanup callback as the value37// so we can tear down listeners if we ever need to re-process the same field.38// When the input is GC'd (SPA nav, React re-render), the map entry goes with39// it and we can re-inject without leaking the old handler.40const processedInputs = new WeakMap<HTMLInputElement, () => void>();41const AUTOFILL_FIELD_TYPES = new Set(["password", "username", "email"]);4243let currentDismiss: (() => void) | null = null;44// Field whose selector is currently open — used to avoid dismiss+reopen flicker45let currentAnchorField: HTMLInputElement | null = null;46// Prevents two concurrent handleFieldInteraction calls for the same field47const pendingInteractions = new WeakSet<HTMLInputElement>();48// Tracks the last field the user explicitly dismissed (Escape / click-outside / Tab).49// Suppresses spurious reopens until focus moves to a different field. Layer 150// of the dismissal model — see Projects.md §4.12.51let lastDismissedField: HTMLInputElement | null = null;5253// ── Dismissal lock (Layer 2) ────────────────────────────────────────54// After any user-initiated dismiss, briefly block ALL reopens regardless of55// which field is focused. Catches the case where a page rapidly moves focus56// between fields after Escape — without this, focus moving to a SECOND field57// in <100ms would re-trigger the popup before the user finished dismissing.58const DISMISS_LOCK_MS = 800;59let dismissLock = false;60let dismissLockTimer: ReturnType<typeof setTimeout> | null = null;61// Set when the inline popup was summoned specifically for a passkey-unlock62// flow. The VAULT_UNLOCKED handler checks this to skip re-triggering autofill63// (the passkey toast handles the next step instead).64let passkeySummonActive = false;65// Set while the passkey approval toast is visible. Prevents handleFieldInteraction66// from opening the autofill selector alongside it. Cleared by a window message67// posted by inject.tsx when the toast closes (and by DISMISS_PASSKEY_TOAST).68let passkeyToastActive = false;69function startDismissLock(): void {70  dismissLock = true;71  if (dismissLockTimer) clearTimeout(dismissLockTimer);72  dismissLockTimer = setTimeout(() => { dismissLock = false; }, DISMISS_LOCK_MS);73}74function canOpen(): boolean { return !dismissLock; }7576// ── Fill-success lock ───────────────────────────────────────────────77// After Peach autofills a form, the popup must NOT reappear on the filled78// fields, on the submit button (some sites refocus it briefly), or on any79// field in that form — even when host-page DOM mutations or the form's own80// validation flow refocus an input. Implemented as a WeakSet of forms plus81// a page-level timestamp:82//   - filledForms: every form Peach has filled this page session. Survives83//     until the form leaves the DOM (WeakSet GC).84//   - pageFilledAt: timestamp of last fill. Used as a 3s belt-and-suspenders85//     window for fields that aren't inside a <form> element (some SPAs).86// SPA navigation resets pageFilledAt via the urlObserver below; filledForms87// self-empties as old form elements get GC'd.88const filledForms = new WeakSet<HTMLFormElement>();89let pageFilledAt: number | null = null;90const PAGE_FILL_GRACE_MS = 3000;9192function recordFillSuccess(...fields: (HTMLInputElement | null | undefined)[]): void {93  for (const f of fields) {94    if (!f) continue;95    const form = f.closest("form");96    if (form) filledForms.add(form);97  }98  pageFilledAt = Date.now();99}100101function wasAlreadyFilled(field: HTMLInputElement): boolean {102  const form = field.closest("form");103  if (form && filledForms.has(form)) return true;104  if (pageFilledAt !== null && Date.now() - pageFilledAt < PAGE_FILL_GRACE_MS) return true;105  return false;106}107108function clearFillStateForExplicitSummon(field: HTMLInputElement): void {109  const form = field.closest("form");110  if (form) filledForms.delete(form);111  pageFilledAt = null;112}113114// Some sites briefly focus the submit button when the user clicks it (visual115// feedback, blur/focus dance for validation animations). Catch those at the116// focusin layer so we don't re-trigger handleFieldInteraction for an event117// target that was never going to be a credential field anyway.118function isSubmitButton(el: EventTarget | null): boolean {119  if (!(el instanceof HTMLElement)) return false;120  if (el instanceof HTMLButtonElement && el.type !== "button") return true;121  if (el instanceof HTMLInputElement && el.type === "submit") return true;122  if (el.getAttribute("type") === "submit") return true;123  const text = (el.textContent?.trim() ?? el.getAttribute("value") ?? "").toLowerCase();124  if (!text || text.length > 24) return false;125  return /^(submit|sign[ -]?in|log[ -]?in|continue|next|go)$/i.test(text);126}127128function debounce<T extends (...args: unknown[]) => void>(129  fn: T,130  ms: number131): (...args: Parameters<T>) => void {132  let timer: ReturnType<typeof setTimeout>;133  return (...args: Parameters<T>) => {134    clearTimeout(timer);135    timer = setTimeout(() => fn(...args), ms);136  };137}138139function showToast(message: string): void {140  const toast = document.createElement("div");141  toast.style.cssText = `142    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);143    background: #131109; color: #F0E8D8; padding: 8px 16px;144    border-radius: 8px; font-family: 'IBM Plex Mono', monospace;145    font-size: 11px; z-index: 2147483647; opacity: 0;146    transition: opacity 200ms ease;147    border: 1px solid rgba(240,232,216,0.07);148    pointer-events: none;149  `;150  toast.textContent = message;151  document.body.appendChild(toast);152  requestAnimationFrame(() => { toast.style.opacity = "1"; });153  setTimeout(() => {154    toast.style.opacity = "0";155    setTimeout(() => toast.remove(), 200);156  }, 2000);157}158159function showSearchPalette(): void {160  const host = document.createElement("div");161  host.style.cssText = "position:fixed;top:80px;left:50%;transform:translateX(-50%);z-index:2147483647;width:340px;";162  document.body.appendChild(host);163  const shadow = host.attachShadow({ mode: "closed" });164165  const style = document.createElement("style");166  style.textContent = `167    .p{background:#131109;border:1px solid rgba(240,232,216,.12);border-radius:12px;168      font-family:'IBM Plex Mono',monospace;font-size:12px;color:#F0E8D8;169      box-shadow:0 8px 24px rgba(0,0,0,.5);overflow:hidden}170    .h{padding:10px 12px 8px;border-bottom:1px solid rgba(240,232,216,.08);171      font-size:11px;color:rgba(240,232,216,.5);display:flex;justify-content:space-between;align-items:center}172    .x{background:none;border:none;color:rgba(240,232,216,.4);cursor:pointer;font-size:14px;padding:0;line-height:1}173    .s{padding:8px 12px}174    .s input{width:100%;box-sizing:border-box;background:rgba(240,232,216,.06);175      border:1px solid rgba(240,232,216,.12);border-radius:6px;color:#F0E8D8;176      padding:6px 8px;font-family:inherit;font-size:12px;outline:none}177    .l{max-height:220px;overflow-y:auto}178    .e{padding:8px 12px;cursor:pointer;display:flex;flex-direction:column;gap:2px}179    .e:hover{background:rgba(240,232,216,.06)}180    .et{font-size:12px}181    .eu{font-size:10px;color:rgba(240,232,216,.45)}182    .em{padding:12px;color:rgba(240,232,216,.4);text-align:center}183  `;184185  let allEntries: SelectorEntry[] = [];186  let query = "";187188  const panel = document.createElement("div");189  panel.className = "p";190191  const hdr = document.createElement("div");192  hdr.className = "h";193  const hdrText = document.createElement("span");194  hdrText.textContent = "No form detected — search your vault";195  const closeBtn = document.createElement("button");196  closeBtn.className = "x";197  closeBtn.textContent = "✕";198  hdr.appendChild(hdrText);199  hdr.appendChild(closeBtn);200201  const searchWrap = document.createElement("div");202  searchWrap.className = "s";203  const searchInput = document.createElement("input");204  searchInput.placeholder = "search...";205  searchWrap.appendChild(searchInput);206207  const list = document.createElement("div");208  list.className = "l";209210  panel.appendChild(hdr);211  panel.appendChild(searchWrap);212  panel.appendChild(list);213  shadow.appendChild(style);214  shadow.appendChild(panel);215216  function close() { host.remove(); }217218  closeBtn.onclick = close;219220  function onKeyDown(e: KeyboardEvent) {221    if (e.key === "Escape") { close(); document.removeEventListener("keydown", onKeyDown, true); }222  }223  document.addEventListener("keydown", onKeyDown, true);224225  function render() {226    const q = query.toLowerCase();227    const filtered = q228      ? allEntries.filter(e => e.title.toLowerCase().includes(q) || (e.username ?? "").toLowerCase().includes(q))229      : allEntries;230    list.innerHTML = "";231    if (filtered.length === 0) {232      const em = document.createElement("div");233      em.className = "em";234      em.textContent = query ? "no matches" : "vault is empty";235      list.appendChild(em);236      return;237    }238    for (const entry of filtered.slice(0, 20)) {239      const row = document.createElement("div");240      row.className = "e";241      const title = document.createElement("div");242      title.className = "et";243      title.textContent = entry.title;244      row.appendChild(title);245      if (entry.username) {246        const user = document.createElement("div");247        user.className = "eu";248        user.textContent = entry.username;249        row.appendChild(user);250      }251      row.onclick = async () => {252        const resp = await chrome.runtime.sendMessage({ type: "GET_ENTRY_FOR_FILL", payload: { id: entry.id } });253        const r = resp as { ok: boolean; data?: { password?: string } };254        if (r.ok && r.data?.password) {255          let alreadyWritten = false;256          try {257            await navigator.clipboard.writeText(r.data.password);258            alreadyWritten = true;259          } catch (err) {260            console.warn("[Peach] clipboard write denied:", err);261          }262          const copyResp = await chrome.runtime.sendMessage({263            type: "COPY",264            payload: { text: r.data.password, label: "Password", alreadyWritten },265          }) as { ok?: boolean } | undefined;266          if (alreadyWritten || copyResp?.ok) {267            showToast("Password copied");268          } else {269            showToast("Could not copy password — clipboard blocked");270          }271        } else {272          showToast("Could not copy password");273        }274        close();275        document.removeEventListener("keydown", onKeyDown, true);276      };277      list.appendChild(row);278    }279  }280281  searchInput.oninput = () => { query = searchInput.value; render(); };282283  fetchAutofillEntries(getPageDomain(), true).then(result => {284    if (result.locked) { showToast("Vault is locked — open Peach to unlock"); close(); return; }285    allEntries = result.entries;286    render();287    searchInput.focus();288  });289}290291function findTOTPField(root: Document | Element = document): HTMLInputElement | null {292  const inputs = root.querySelectorAll<HTMLInputElement>("input");293  for (const input of inputs) {294    if (isTOTPField(input)) return input;295  }296  return null;297}298299function findSameLoginTOTPField(passwordEl: HTMLInputElement): HTMLInputElement | null {300  const form = passwordEl.closest("form");301  return findTOTPField(form ?? document);302}303304305async function handleAutofill(306  _field: HTMLInputElement,307  usernameEl: HTMLInputElement | null,308  passwordEl: HTMLInputElement | null,309  entry: VaultEntry310): Promise<HTMLInputElement | null> {311  if (!entry.username && !entry.password) return null;312  const pageDomain = getPageDomain();313  const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;314  fillFields(usernameEl, passwordEl, entry.username ?? "", entry.password ?? "", form, pageDomain);315  let filledTOTPField: HTMLInputElement | null = null;316317  if (entry.canary) {318    chrome.runtime.sendMessage({319      type: "FIRE_CANARY_PING",320      payload: {321        webhookUrl: entry.canary.webhookUrl,322        entryTitle: entry.title,323        trigger: "autofilled",324      },325    }).catch(() => {});326    chrome.runtime.sendMessage({327      type: "UPDATE_ENTRY",328      payload: {329        id: entry.id,330        patch: {331          canary: {332            ...entry.canary,333            lastPinged: Date.now(),334            pingCount: (entry.canary.pingCount ?? 0) + 1,335          },336        },337      },338    }).catch(() => {});339  }340341  // The background sends a freshly-generated 6-digit code (totpCode), never the342  // base32 seed (SEV-3-C). Fill the code straight in.343  const totpCode = (entry as { totpCode?: string }).totpCode;344  if (totpCode) {345    const code = totpCode;346    const totpField = passwordEl ? findSameLoginTOTPField(passwordEl) : null;347    if (fillTOTPCode(totpField, code)) {348      filledTOTPField = totpField;349    }350    let alreadyWritten = false;351    try {352      await navigator.clipboard.writeText(code);353      alreadyWritten = true;354    } catch (err) {355      console.warn("[Peach] clipboard write denied:", err);356    }357    const response = await chrome.runtime.sendMessage({358      type: "COPY",359      payload: { text: code, label: "TOTP", alreadyWritten },360    });361    if (filledTOTPField) {362      showToast("2FA code filled");363    } else if (alreadyWritten || (response as { ok?: boolean }).ok) {364      // Don't render the live code into the light-DOM toast — the page can read365      // it from the DOM and consume the one-time code (audit LOW). The code is366      // already on the clipboard; just confirm.367      showToast("2FA code copied");368    } else {369      showToast("Could not copy TOTP — clipboard blocked");370    }371  }372373  return filledTOTPField;374}375376async function fetchAutofillEntries(377  domain: string,378  includeAll = false379): Promise<{ entries: SelectorEntry[]; locked: boolean }> {380  const response = await chrome.runtime.sendMessage({381    type: "AUTOFILL_QUERY",382    payload: { domain, includeAll },383  });384  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };385  if (!res.ok && res.error === "vault_locked") {386    return { entries: [], locked: true };387  }388  return { entries: res.data ?? [], locked: false };389}390391async function fetchTOTPEntries(392  domain: string393): Promise<{ entries: SelectorEntry[]; locked: boolean }> {394  const response = await chrome.runtime.sendMessage({395    type: "AUTOFILL_QUERY",396    payload: { domain, kind: "totp" },397  });398  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };399  if (!res.ok && res.error === "vault_locked") {400    return { entries: [], locked: true };401  }402  return { entries: res.data ?? [], locked: false };403}404405406function resolveAutofillFieldType(407  el: HTMLInputElement,408  predictedType?: FieldPrediction["type"] | null409): "password" | "username" | "email" | null {410  if (411    predictedType === "password" ||412    predictedType === "username" ||413    predictedType === "email"414  ) {415    return predictedType;416  }417418  const detected = detectLoginFields().find((field) => field.el === el)?.type;419  if (detected && AUTOFILL_FIELD_TYPES.has(detected)) {420    return detected;421  }422423  const htmlType = el.type.toLowerCase();424  if (htmlType === "password") return "password";425  if (htmlType === "email") return "email";426  return null;427}428429async function openAutofillSelector(430  anchorField: HTMLInputElement,431  usernameEl: HTMLInputElement | null,432  passwordEl: HTMLInputElement | null,433  domainEntries: SelectorEntry[],434  searchableEntries: SelectorEntry[],435  domain: string,436  identityKind: "email" | "username"437): Promise<void> {438  // No saved entries for this site → signup/new-account mode.439  // Fetch vault identities for the identity-first surface and locate440  // the confirm-password field so "Copy & fill" can populate it too.441  const isSignup = domainEntries.length === 0;442  let savedIdentities: SavedIdentity[] | undefined;443  let confirmEl: HTMLInputElement | null = null;444  if (isSignup) {445    try {446      const idResp = await chrome.runtime.sendMessage({ type: "GET_IDENTITIES" }).catch(() => null) as447        { ok: boolean; data?: SavedIdentity[] } | null;448      if (idResp?.ok && Array.isArray(idResp.data)) savedIdentities = idResp.data;449    } catch { /* silent fallback */ }450451    const form = (passwordEl ?? usernameEl)?.closest("form") ?? document.body;452    const allPwInputs = Array.from(form.querySelectorAll<HTMLInputElement>("input[type='password']"));453    confirmEl = allPwInputs.find(454      (el) => el !== passwordEl && /confirm|repeat|verify/i.test(el.name + el.id + el.placeholder)455    ) ?? (allPwInputs.length >= 2 ? allPwInputs.find((el) => el !== passwordEl) ?? null : null);456  }457458  currentDismiss?.();459  currentAnchorField = anchorField;460  currentDismiss = showAutofillSelector(461    anchorField,462    domainEntries,463    async (id: string) => {464      currentDismiss = null;465      currentAnchorField = null;466      const entryResponse = await chrome.runtime.sendMessage({467        type: "GET_ENTRY_FOR_FILL",468        payload: { id },469      });470      const entry = (entryResponse as { ok: boolean; data?: VaultEntry }).data;471      if (entry) {472        const filledTOTPField = await handleAutofill(anchorField, usernameEl, passwordEl, entry);473        recordFillSuccess(anchorField, usernameEl, passwordEl, filledTOTPField);474        // Offer to remember the current site for this entry only if none of475        // its known domains (primary + additional) match — otherwise the476        // user already mapped it and the prompt would be noise.477        const pageDomain = location.hostname.replace(/^www\./, "");478        const entryDomains = new Set<string>();479        for (const u of [entry.url, ...(entry.additionalUrls ?? [])]) {480          try {481            if (u) entryDomains.add(new URL(u).hostname.replace(/^www\./, ""));482          } catch { /* ignore unparseable */ }483        }484        if (pageDomain && entryDomains.size > 0 && !entryDomains.has(pageDomain)) {485          showRememberSiteToast(pageDomain, entry.id);486        }487      }488    },489    {490      domain,491      searchableEntries,492      isSignup,493      identityKind,494      savedIdentities,495      onFillFields: (username, password) => {496        const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;497        fillFields(usernameEl, passwordEl, username, password, form, getPageDomain());498        if (password && confirmEl) setNativeValue(confirmEl, password);499        recordFillSuccess(anchorField, usernameEl, passwordEl);500      },501      onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },502    }503  );504}505506async function openTOTPSelector(anchorField: HTMLInputElement, otpDigitBoxes?: HTMLInputElement[]): Promise<void> {507  if (!canOpen()) return;508  if (currentDismiss && currentAnchorField === anchorField) return;509  if (anchorField !== lastDismissedField) lastDismissedField = null;510  if (anchorField === lastDismissedField) return;511  if (wasAlreadyFilled(anchorField)) return;512513  const domain = getPageDomain();514  const result = await fetchTOTPEntries(domain);515516  if (result.locked) {517    currentDismiss?.();518    currentAnchorField = anchorField;519    currentDismiss = showAutofillSelector(520      anchorField,521      [],522      () => {},523      {524        domain,525        locked: true,526        onUnlocked: () => void openTOTPSelector(anchorField),527        onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },528      }529    );530    return;531  }532533  if (result.entries.length === 0) {534    lastDismissedField = anchorField;535    startDismissLock();536    showToast("No 2FA entries for this site — add a code in Peach first");537    return;538  }539540  currentDismiss?.();541  currentAnchorField = anchorField;542  currentDismiss = showTOTPSelector(543    anchorField,544    result.entries,545    async (id: string) => {546      try {547        const entryResponse = await chrome.runtime.sendMessage({548          type: "GET_ENTRY_FOR_FILL",549          payload: { id },550        }).catch(() => null) as { ok: boolean; data?: VaultEntry } | null;551        const entry = entryResponse?.ok ? entryResponse.data : undefined;552        const code = (entry as { totpCode?: string } | undefined)?.totpCode;553        if (!code) return;554        if (otpDigitBoxes && otpDigitBoxes.length > 1) {555          fillOTPDigitBoxes(otpDigitBoxes, code);556        } else {557          setNativeValue(anchorField, code);558        }559        recordFillSuccess(anchorField);560        showToast("2FA code filled");561      } finally {562        currentDismiss = null;563        currentAnchorField = null;564      }565    },566    {567      domain,568      onDismiss: () => {569        lastDismissedField = anchorField;570        startDismissLock();571        currentDismiss = null;572        currentAnchorField = null;573      },574    }575  );576}577578579async function handleFieldInteraction(580  anchorField?: HTMLInputElement | null,581  explicitSummon = false582): Promise<void> {583  const field = anchorField ?? getDeepActiveInput();584  if (!field) return;585  if (!isVisible(field)) return;586587  // Passkey toast is visible — don't open the credential selector alongside it.588  if (passkeyToastActive) return;589590  // Layer 2: post-dismiss global lock. Catches rapid focus moves between591  // fields immediately after Escape/click-outside.592  if (!canOpen()) return;593594  // If a selector is already open for this exact field, don't flicker it.595  if (currentDismiss && currentAnchorField === field) return;596597  // If focus moved to a different field, the previous per-field dismiss lock598  // no longer applies.599  if (field !== lastDismissedField) lastDismissedField = null;600  // Layer 1: the user explicitly dismissed this field's selector — don't601  // reopen it until focus has genuinely moved away and come back.602  if (field === lastDismissedField) return;603604  // Fill-success lock: Peach already filled this form (or fired a fill605  // anywhere on the page within the grace window). Sites often refocus an606  // input on submit click, on validation, or on a transition to a success607  // state — none of those should re-open the popup.608  if (wasAlreadyFilled(field)) return;609610  // Prevent two concurrent calls for the same field (e.g. focusin + icon click611  // firing simultaneously — the second call would dismiss the first's selector).612  if (pendingInteractions.has(field)) return;613  pendingInteractions.add(field);614615  try {616    // Multi-digit OTP entry: individual maxLength=1 boxes get no icon (too small)617    // but the TOTP selector opens on focus and fills every box at once.618    const otpGroup = findOTPDigitBoxGroup(field);619    if (otpGroup) {620      await openTOTPSelector(otpGroup[0]!, otpGroup);621      return;622    }623624    if (isTOTPField(field)) {625      const formFields = detectLoginFields();626      if (!isLoginForm(formFields) && !isSignupForm(formFields)) {627        await openTOTPSelector(field);628        return;629      }630    }631632    const fieldType = field.type.toLowerCase();633634    const mlPromise = contentMLDetector.predictBatch([field]).then((preds) => {635      return preds[0] ?? null;636    });637638    const mlPrediction = await new Promise<FieldPrediction | null>((resolve) => {639      const timeout = setTimeout(() => resolve(null), 150);640      mlPromise.then((pred) => {641        clearTimeout(timeout);642        resolve(pred);643      });644    });645646    if (passkeyToastActive) return;647648    if (!explicitSummon && fieldType !== "password" && mlPrediction && mlPrediction.type !== "username" && mlPrediction.type !== "email") {649      return;650    }651652    const autofillFieldType = resolveAutofillFieldType(field, mlPrediction?.type);653    if (autofillFieldType) {654      reattachListeners(field, autofillFieldType);655    }656657    let fields = detectLoginFields();658    const targets = resolveAutofillInteractionTargets(field, fields, explicitSummon);659    if (!targets.shouldOpen) {660      return;661    }662663    const domain = getPageDomain();664    const firstResult = await fetchAutofillEntries(domain);665    if (passkeyToastActive) return;666667    // Vault is locked — show an inline unlock prompt.668    // Re-triggering after unlock is handled by the VAULT_UNLOCKED message so669    // there is no double-trigger race between onUnlocked and the broadcast.670    if (firstResult.locked) {671      currentDismiss?.();672      currentAnchorField = field;673      currentDismiss = showAutofillSelector(674        field,675        [],676        () => {},677        { domain, locked: true, onDismiss: () => { lastDismissedField = field; startDismissLock(); } }678      );679      return;680    }681682    const entries = firstResult.entries;683    // Always fetch the vault-wide list so the inline popup's search affordance684    // can reach entries that don't match this domain — the user may have a685    // valid login filed under a different URL (e.g. corp account on a vanity686    // domain) and still want to fill it here.687    const allEntries = (await fetchAutofillEntries(domain, true)).entries;688689    if (passkeyToastActive) return;690691    const pwField = fields.find((f) => f.type === "password");692    // For email-first flows there is no password field on this step — that is expected.693    if (!explicitSummon && !pwField && !isEmailFirstForm(fields)) return;694    const usernameEl = targets.usernameEl;695    const passwordEl = targets.passwordEl;696697    await openAutofillSelector(698      field,699      usernameEl,700      passwordEl,701      entries,702      allEntries,703      domain,704      autofillFieldType === "email" ? "email" : "username",705    );706  } finally {707    pendingInteractions.delete(field);708  }709}710711async function onFocusIn(e: Event): Promise<void> {712  // Submit-button focus: catch the brief refocus some sites do when the713  // user clicks the login/submit button. Without this guard, that focus714  // event reaches handleFieldInteraction → getDeepActiveInput, and on715  // pages where the button is also a labelled <input> we briefly attempt716  // to open the popup over the very button the user just clicked.717  if (isSubmitButton(e.target)) return;718  await handleFieldInteraction();719}720721function reattachListeners(722  el: HTMLInputElement,723  detectedType?: "password" | "username" | "email",724  contextFields?: ReturnType<typeof detectLoginFields>725): void {726  if (processedInputs.has(el)) return;727  if (!resolveAutofillFieldType(el, detectedType)) return;728  // Only inject icon when a credential form is present on the page729  const fields = contextFields ?? detectLoginFields();730  if (!isAnyCredentialForm(fields)) return;731732  const cleanup = injectFieldIcon(el, () => {733    currentDismiss?.();734    currentDismiss = null;735    lastDismissedField = null; // icon click is an explicit user open — clear per-field lock736    dismissLock = false; // ...and the global lock737    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }738    clearFillStateForExplicitSummon(el);739    el.focus({ preventScroll: true });740    void handleFieldInteraction(el, true);741  });742  processedInputs.set(el, cleanup);743}744745const debouncedReattach = debounce(() => {746  const allFields = detectLoginFields();747  if (!isAnyCredentialForm(allFields)) return;748  const newFields = allFields.filter(749    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)750  );751  for (const f of newFields) {752    reattachListeners(f.el, f.type, allFields);753  }754  // 200ms debounce — below this, Peach and the host page's reactive layer755  // fight over the same layout properties every frame on React/Vue/Angular756  // login forms (v1.4.14 regression, Projects.md §4.7). Do not lower.757}, 200);758759function setupMutationObserver(): void {760  const observer = new MutationObserver(debouncedReattach);761  observer.observe(document.body, {762    childList: true,763    subtree: true,764    attributes: true,765    attributeFilter: ["type", "autocomplete", "name", "id", "placeholder", "hidden"],766  });767}768769function initialScan(aggressionLevel = 0, isFinalPass = false) {770  const allFields = detectLoginFields();771  const hasKnownForm = isAnyCredentialForm(allFields);772773  if (aggressionLevel === 0 && !hasKnownForm) return;774775  const newFields = allFields.filter(776    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)777  );778779  for (const f of newFields) {780    reattachListeners(f.el, f.type, allFields);781  }782783  // Level 2, final pass: inject icon on any visible password field even if784  // the form-context gate in reattachListeners would normally skip it.785  if (aggressionLevel >= 2 && isFinalPass && newFields.length === 0) {786    const pwInputs = document.querySelectorAll<HTMLInputElement>('input[type="password"]');787    for (const el of pwInputs) {788      if (isVisible(el) && !processedInputs.has(el)) {789        const cleanup = injectFieldIcon(el, () => {790          currentDismiss?.();791          currentDismiss = null;792          lastDismissedField = null;793          dismissLock = false;794          if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }795          clearFillStateForExplicitSummon(el);796          el.focus({ preventScroll: true });797          void handleFieldInteraction(el, true);798        });799        processedInputs.set(el, cleanup);800      }801    }802  }803}804805// ── TOTP-only fields ───────────────────────────────────────────────────────806// After a username/password submission, many sites swap the whole form for a807// lone "verification code" input. The credential selector intentionally gates808// on login/signup forms, so TOTP fields need a narrow path of their own.809const processedTOTPInputs = new WeakMap<HTMLInputElement, () => void>();810811function hasLoginOrSignupForm(): boolean {812  const fields = detectLoginFields();813  return isAnyCredentialForm(fields);814}815816function injectTOTPFieldIcon(field: HTMLInputElement): void {817  if (processedTOTPInputs.has(field)) return;818  const cleanup = injectFieldIcon(field, () => {819    currentDismiss?.();820    currentDismiss = null;821    currentAnchorField = null;822    lastDismissedField = null;823    dismissLock = false;824    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }825    clearFillStateForExplicitSummon(field);826    field.focus({ preventScroll: true });827    void openTOTPSelector(field);828  });829  processedTOTPInputs.set(field, cleanup);830}831832function scanTOTPFields(): void {833  if (hasLoginOrSignupForm()) return;834  const inputs = document.querySelectorAll<HTMLInputElement>("input");835  for (const input of inputs) {836    if (!isTOTPField(input)) continue;837    injectTOTPFieldIcon(input);838  }839}840841function setupTOTPAutofill(): void {842  setTimeout(scanTOTPFields, 0);843  setTimeout(scanTOTPFields, 500);844  setTimeout(scanTOTPFields, 1500);845846  const debouncedScan = debounce(scanTOTPFields, 200);847  new MutationObserver(debouncedScan).observe(document.body, {848    childList: true,849    subtree: true,850    attributes: true,851    attributeFilter: ["autocomplete", "name", "id", "placeholder", "hidden"],852  });853854  document.addEventListener("focusin", (e) => {855    const target = e.target;856    if (!(target instanceof HTMLInputElement)) return;857    if (hasLoginOrSignupForm()) return;858    if (!isTOTPField(target)) return;859    injectTOTPFieldIcon(target);860  }, true);861}862863document.addEventListener("focusin", onFocusIn);864865setupMutationObserver();866setupTOTPAutofill();867setupSaveDetection();868setupCardAutofill();869870// SPA navigation reset: the content script does not reload across in-app871// route changes (history.pushState, hash navigation, framework routers).872// When the URL changes we clear the page-level fill timestamp so the next873// page works normally; filledForms (a WeakSet) self-empties as old form874// elements leave the DOM. subtree:false because route swaps reliably875// mutate document.body's direct children — subtree:true would fire on876// every internal DOM update and cost us a re-check per mutation.877let lastObservedUrl = location.href;878new MutationObserver(() => {879  if (location.href !== lastObservedUrl) {880    lastObservedUrl = location.href;881    pageFilledAt = null;882  }883}).observe(document.body, { childList: true, subtree: false });884885// Async init: check recall map before running the initial scans so we can886// apply the right aggression level for domains the user has needed before.887(async () => {888  let aggressionLevel = 0;889  try {890    const resp = await chrome.runtime.sendMessage({ type: "GET_SETTINGS" });891    const s = (resp as { ok: boolean; data?: { manualSummonDomains?: Record<string, { summonCount: number }> } }).data;892    const domain = getPageDomain();893    const record = domain ? s?.manualSummonDomains?.[domain] : undefined;894    aggressionLevel = !record ? 0 : record.summonCount >= 2 ? 2 : 1;895  } catch { /* SW may be starting up; proceed with normal scan */ }896897  setTimeout(() => initialScan(aggressionLevel, false), 0);898  setTimeout(() => initialScan(aggressionLevel, false), 500);899  setTimeout(() => initialScan(aggressionLevel, true), 1500);900})();901902// ── Card autofill (State 7) ─────────────────────────────────────────903// Card forms get a parallel injection path. The login icon-injection gate904// in reattachListeners deliberately skips non-text fields, so we wire905// cards independently rather than retrofit AUTOFILL_FIELD_TYPES — keeping906// card detection contained makes the boundary easy to follow.907const processedCardInputs = new WeakMap<HTMLInputElement, () => void>();908let currentCardDismiss: (() => void) | null = null;909let currentCardAnchor: HTMLInputElement | null = null;910let lastDismissedCardField: HTMLInputElement | null = null;911912async function fetchSavedCards(): Promise<CardSelectorEntry[]> {913  const resp = await chrome.runtime.sendMessage({914    type: "AUTOFILL_QUERY",915    payload: { domain: getPageDomain(), kind: "card" },916  }).catch(() => null);917  const r = resp as { ok: boolean; data?: CardSelectorEntry[] } | null;918  return r?.ok ? (r.data ?? []) : [];919}920921async function openCardSelector(anchor: HTMLInputElement): Promise<void> {922  if (!canOpen()) return;923  if (currentCardDismiss && currentCardAnchor === anchor) return;924  if (anchor === lastDismissedCardField) return;925  if (anchor !== lastDismissedCardField) lastDismissedCardField = null;926  if (wasAlreadyFilled(anchor)) return;927928  const cards = await fetchSavedCards();929  if (cards.length === 0) return; // no saved cards → nothing to offer930931  const cardForm = detectCardForm();932  if (!cardForm?.number) return;933934  currentCardDismiss?.();935  currentCardAnchor = anchor;936  currentCardDismiss = showCardSelector(937    anchor,938    cards,939    {940      domain: getPageDomain(),941      onFill: (entry) => {942        if (!cardForm) return;943        fillCardForm(cardForm, {944          cardNumber: entry.cardNumber ?? "",945          expMonth: entry.expMonth ?? "",946          expYear: entry.expYear ?? "",947          cvc: entry.cvc ?? "",948          cardholderName: entry.cardholderName ?? "",949        });950        // All four card field types share the same form — recording the951        // number field's form is sufficient to suppress reopens on any of952        // them via wasAlreadyFilled().953        recordFillSuccess(cardForm.number, cardForm.cvc, cardForm.expiryCombo, cardForm.name);954        currentCardDismiss = null;955        currentCardAnchor = null;956      },957      onDismiss: () => {958        lastDismissedCardField = anchor;959        startDismissLock();960        currentCardDismiss = null;961        currentCardAnchor = null;962      },963    }964  );965}966967function injectCardIcon(field: HTMLInputElement): void {968  if (processedCardInputs.has(field)) return;969  const cleanup = injectFieldIcon(field, () => {970    currentCardDismiss?.();971    currentCardDismiss = null;972    lastDismissedCardField = null;973    dismissLock = false;974    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }975    clearFillStateForExplicitSummon(field);976    field.focus({ preventScroll: true });977    void openCardSelector(field);978  });979  processedCardInputs.set(field, cleanup);980}981982function setupCardAutofill(): void {983  function scan() {984    const cardForm = detectCardForm();985    if (!cardForm?.number) return;986    if (!isVisible(cardForm.number)) return;987    injectCardIcon(cardForm.number);988  }989990  // Initial detection sweep — same retry cadence as login fields so991  // late-hydrating SPA checkout pages get caught.992  setTimeout(scan, 0);993  setTimeout(scan, 500);994  setTimeout(scan, 1500);995996  // Re-scan on DOM mutation (separate from the login MutationObserver997  // because card forms typically appear on a single navigation event,998  // not field-by-field — coarser observation is sufficient here).999  let pending = false;1000  new MutationObserver(() => {1001    if (pending) return;1002    pending = true;1003    setTimeout(() => { pending = false; scan(); }, 200);1004  }).observe(document.body, { childList: true, subtree: true });10051006  // Field-focus path: on focus of a cc-number input, ensure icon is1007  // present and consider opening the selector when the user explicitly1008  // clicks into the card number field.1009  document.addEventListener("focusin", (e) => {1010    const target = e.target;1011    if (!(target instanceof HTMLInputElement)) return;1012    const cardForm = detectCardForm();1013    if (cardForm?.number === target) {1014      injectCardIcon(target);1015    }1016  }, true);1017}10181019chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {1020  // Ignore anything not originating from our own background/service worker.1021  if (sender.id !== chrome.runtime.id) return;1022  if (msg?.type === "GET_SITE_PASSWORD_POLICY") {1023    const policy = detectPasswordPolicy();1024    sendResponse({ ok: true, data: policy });1025    return true;1026  }1027  if (msg?.type === "PING") {1028    sendResponse({ ok: true });1029    return true;1030  }1031  if (msg?.type === "SUMMON_AUTOFILL") {1032    const source = (msg as { type: string; source?: string }).source;1033    const isShortcut = source === "shortcut";1034    const isPasskeyUnlock = source === "passkey-unlock";10351036    const activeInput = getDeepActiveInput();1037    const fields = detectLoginFields();1038    const hasForm = isAnyCredentialForm(fields);10391040    if (hasForm) {1041      // Prefer the currently focused field if it's a login field, otherwise1042      // fall back to the first password field, then username/email.1043      const inForm = activeInput && fields.some(f => f.el === activeInput);1044      const target = inForm1045        ? activeInput1046        : (fields.find(f => f.type === "password")?.el1047            ?? fields.find(f => f.type === "username" || f.type === "email")?.el);1048      if (target) {1049        // Explicit user summon (shortcut or extension button) — bypass all1050        // suppression layers. The user is asking for the popup right now.1051        clearFillStateForExplicitSummon(target);1052        dismissLock = false;1053        if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1054        lastDismissedField = null;1055        void handleFieldInteraction(target);1056      }1057    } else if (isPasskeyUnlock) {1058      // Vault is locked during a passkey GET request. Show the inline unlock1059      // prompt anchored to whatever element is focused on the page (typically1060      // the passkey/sign-in button the user just tapped).1061      const anchor = (document.activeElement instanceof HTMLElement && document.activeElement !== document.body)1062        ? document.activeElement as unknown as HTMLInputElement1063        : null;1064      if (anchor) {1065        currentDismiss?.();1066        currentAnchorField = null;1067        passkeySummonActive = true;1068        currentDismiss = showAutofillSelector(anchor, [], () => {}, {1069          domain: getPageDomain(),1070          locked: true,1071          onDismiss: () => { passkeySummonActive = false; },1072        });1073      }1074    } else if (isShortcut) {1075      // Shortcut on a page with no login form — show clipboard-copy search mode.1076      showSearchPalette();1077    }10781079    // Record this domain for the recall system when triggered via shortcut.1080    if (isShortcut) {1081      const domain = getPageDomain();1082      if (domain) {1083        chrome.runtime.sendMessage({ type: "RECORD_MANUAL_SUMMON", payload: { domain } }).catch(() => {});1084      }1085    }10861087    sendResponse({ ok: hasForm || isShortcut || isPasskeyUnlock });1088    return true;1089  }1090  if (msg?.type === "PASSKEY_PRO_GATE") {1091    // Background rejected a passkey request for a free user. Show State 111092    // so they know what happened and can choose to upgrade.1093    showPasskeyProGate();1094    sendResponse({ ok: true });1095    return true;1096  }1097  if (msg?.type === "SHOW_PASSKEY_TOAST") {1098    // Block autofill selector for the lifetime of the toast and dismiss anything open.1099    passkeyToastActive = true;1100    if (currentDismiss) {1101      currentDismiss();1102      currentDismiss = null;1103      currentAnchorField = null;1104    }1105    return false; // inject.tsx owns the toast and calls sendResponse1106  }1107  if (msg?.type === "DISMISS_PASSKEY_TOAST") {1108    passkeyToastActive = false;1109    return false; // inject.tsx handles the actual dismissal1110  }1111  if (msg?.type === "VAULT_UNLOCKED") {1112    if (passkeySummonActive) {1113      // This unlock was for a pending passkey GET request. Just dismiss the1114      // inline popup — the passkey approval toast takes over from here.1115      passkeySummonActive = false;1116      if (currentDismiss) {1117        currentDismiss();1118        currentDismiss = null;1119        currentAnchorField = null;1120      }1121      sendResponse({ ok: true });1122      return true;1123    }1124    // Normal autofill path: close the locked-state prompt and re-open with1125    // fresh entry data at the same anchor field.1126    const savedField = currentAnchorField;1127    if (currentDismiss) {1128      currentDismiss();1129      currentDismiss = null;1130      currentAnchorField = null;1131    }1132    void handleFieldInteraction(savedField ?? undefined);1133    sendResponse({ ok: true });1134    return true;1135  }1136  return true;1137});11381139// inject.tsx posts this when the passkey toast closes (approve, deny, or timeout)1140// so we know it's safe to allow autofill again.1141window.addEventListener("message", (e: MessageEvent) => {1142  // Reject postMessages from cross-frame senders — only the same window's1143  // injected toast may flip this flag.1144  if (e.source !== window) return;1145  const d = e.data as { source?: string; type?: string } | undefined;1146  if (d?.source === "peach-passkey-toast" && d?.type === "toast-closed") {1147    passkeyToastActive = false;1148  }1149});11501151// ── Firefox passkey detection bridge (legacy observer path) ─────────────1152//1153// Pre-v2.12.0 the MAIN-world `passkeys-firefox.ts` was an observer — it1154// emitted `peach-passkey-firefox` postMessages so this content script could1155// surface State 12 (an inline "Save passkey to Peach" offer). v2.12.01156// replaced the observer with a full interception proxy (the page never1157// reaches a real navigator.credentials.create on Firefox anymore), and the1158// approval UI is opened by the background as part of the ceremony itself.1159// When the proxy is active the offer would be redundant noise, so the1160// listener gates on the flag. Once the proxy is removed (Firefox ships1161// webAuthenticationProxy) this whole block goes too.1162if (!FIREFOX_USE_CONTENT_SCRIPT_PROXY) {1163  let lastPasskeyOfferAt = 0;1164  const PASSKEY_OFFER_COOLDOWN_MS = 30_000;11651166  window.addEventListener("message", (event: MessageEvent) => {1167    if (event.source !== window) return;1168    const data = event.data as { source?: string; type?: string; rpId?: string; rpName?: string; userName?: string; userDisplayName?: string } | undefined;1169    if (!data || data.source !== "peach-passkey-firefox") return;1170    if (detectBrowser() !== "firefox") return;1171    if (data.type !== "create") return;11721173    // Cooldown: a single page interaction can fire multiple credentials.create1174    // calls. Show the offer at most once per 30 seconds per page session.1175    const now = Date.now();1176    if (now - lastPasskeyOfferAt < PASSKEY_OFFER_COOLDOWN_MS) return;1177    lastPasskeyOfferAt = now;11781179    const domain = location.hostname.replace(/^www\./, "");1180    chrome.runtime.sendMessage({1181      type: "GET_PASSKEY_OFFER_DECLINED",1182      payload: { domain },1183    }).then((res: { ok: boolean; data?: boolean } | undefined) => {1184      if (res?.data === true) return;1185      const rpId = data.rpId ?? domain;1186      showPasskeyRegistrationOffer({1187        rpId,1188        rpName: data.rpName,1189        userName: data.userName,1190        userDisplayName: data.userDisplayName,1191      });1192    }).catch(() => {});1193  });1194}11951196// Surface State 11 (passkey-available) only when it adds value:1197//   - Cross-browser entry: Chrome passkey on Firefox or vice versa — neither1198//     browser will auto-route, so the banner explains the re-register need.1199//   - Firefox + same-browser entry: Firefox has no equivalent of1200//     webAuthenticationProxy, so without a banner the user has no signal that1201//     Peach is the source.1202// On Chrome with a same-browser entry: skip — webAuthenticationProxy handles1203// the page's own credentials.get transparently and the popup approval view1204// already surfaces it. A banner here would just be noise.1205//1206// Dedupe across navigation: each navigation re-injects this content script.1207// chrome.storage.session keyed by domain is the natural per-tab/per-session1208// memory; session storage clears when the user closes the browser.1209{1210  function checkPasskeyAvailability() {1211    const domain = location.hostname.replace(/^www\./, "");1212    if (!domain) return;1213    const sessionKey = `peach_state11_shown:${domain}`;1214    chrome.storage.session?.get(sessionKey).then((stored) => {1215      if (stored && (stored as Record<string, unknown>)[sessionKey]) return;1216      chrome.runtime.sendMessage({1217        type: "GET_PASSKEY_FOR_DOMAIN",1218        payload: { domain },1219      }).then((res: { ok: boolean; data?: { rpId: string; userName: string; browser?: "chrome" | "firefox" } | null } | undefined) => {1220        const data = res?.data;1221        if (!data) return;1222        const current = detectBrowser();1223        const isCrossBrowser =1224          data.browser && current !== "unknown" && data.browser !== current;1225        const valuableOnFirefox = current === "firefox";1226        if (!isCrossBrowser && !valuableOnFirefox) return;1227        chrome.storage.session?.set({ [sessionKey]: Date.now() }).catch(() => {});1228        showPasskeyAvailable({1229          rpId: data.rpId,1230          userName: data.userName,1231          fromBrowser: data.browser,1232          currentBrowser: current,1233        });1234      }).catch(() => {});1235    }).catch(() => {});1236  }12371238  // Defer until DOM is interactive — content_scripts run at document_idle but1239  // some pages still mutate visibly afterwards. A short delay also avoids1240  // surfacing the State 11 toast while the user is in the middle of typing.1241  if (document.readyState === "loading") {1242    document.addEventListener("DOMContentLoaded", () => setTimeout(checkPasskeyAvailability, 800));1243  } else {1244    setTimeout(checkPasskeyAvailability, 800);1245  }1246}