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: VaultEntry,310  emailEl?: HTMLInputElement | null311): Promise<HTMLInputElement | null> {312  if (!entry.username && !entry.password && !entry.email) return null;313  const pageDomain = getPageDomain();314  const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;315  // Fill the email field with entry.email if set; fall back to entry.username when316  // it looks like an email address (sites that store email-as-username and have a317  // separate email field on signup forms).318  const emailValue = entry.email ?? (entry.username?.includes("@") ? entry.username : "");319  fillFields(usernameEl, passwordEl, entry.username ?? "", entry.password ?? "", form, pageDomain, emailEl, emailValue);320  let filledTOTPField: HTMLInputElement | null = null;321322  if (entry.canary) {323    chrome.runtime.sendMessage({324      type: "FIRE_CANARY_PING",325      payload: {326        webhookUrl: entry.canary.webhookUrl,327        entryTitle: entry.title,328        trigger: "autofilled",329      },330    }).catch(() => {});331    chrome.runtime.sendMessage({332      type: "UPDATE_ENTRY",333      payload: {334        id: entry.id,335        patch: {336          canary: {337            ...entry.canary,338            lastPinged: Date.now(),339            pingCount: (entry.canary.pingCount ?? 0) + 1,340          },341        },342      },343    }).catch(() => {});344  }345346  // The background sends a freshly-generated 6-digit code (totpCode), never the347  // base32 seed (SEV-3-C). Fill the code straight in.348  const totpCode = (entry as { totpCode?: string }).totpCode;349  if (totpCode) {350    const code = totpCode;351    const totpField = passwordEl ? findSameLoginTOTPField(passwordEl) : null;352    if (fillTOTPCode(totpField, code)) {353      filledTOTPField = totpField;354    }355    let alreadyWritten = false;356    try {357      await navigator.clipboard.writeText(code);358      alreadyWritten = true;359    } catch (err) {360      console.warn("[Peach] clipboard write denied:", err);361    }362    const response = await chrome.runtime.sendMessage({363      type: "COPY",364      payload: { text: code, label: "TOTP", alreadyWritten },365    });366    if (filledTOTPField) {367      showToast("2FA code filled");368    } else if (alreadyWritten || (response as { ok?: boolean }).ok) {369      // Don't render the live code into the light-DOM toast — the page can read370      // it from the DOM and consume the one-time code (audit LOW). The code is371      // already on the clipboard; just confirm.372      showToast("2FA code copied");373    } else {374      showToast("Could not copy TOTP — clipboard blocked");375    }376  }377378  return filledTOTPField;379}380381async function fetchAutofillEntries(382  domain: string,383  includeAll = false384): Promise<{ entries: SelectorEntry[]; locked: boolean }> {385  const response = await chrome.runtime.sendMessage({386    type: "AUTOFILL_QUERY",387    payload: { domain, includeAll },388  });389  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };390  if (!res.ok && res.error === "vault_locked") {391    return { entries: [], locked: true };392  }393  return { entries: res.data ?? [], locked: false };394}395396async function fetchTOTPEntries(397  domain: string398): Promise<{ entries: SelectorEntry[]; locked: boolean }> {399  const response = await chrome.runtime.sendMessage({400    type: "AUTOFILL_QUERY",401    payload: { domain, kind: "totp" },402  });403  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };404  if (!res.ok && res.error === "vault_locked") {405    return { entries: [], locked: true };406  }407  return { entries: res.data ?? [], locked: false };408}409410411function resolveAutofillFieldType(412  el: HTMLInputElement,413  predictedType?: FieldPrediction["type"] | null414): "password" | "username" | "email" | null {415  if (416    predictedType === "password" ||417    predictedType === "username" ||418    predictedType === "email"419  ) {420    return predictedType;421  }422423  const detected = detectLoginFields().find((field) => field.el === el)?.type;424  if (detected && AUTOFILL_FIELD_TYPES.has(detected)) {425    return detected;426  }427428  const htmlType = el.type.toLowerCase();429  if (htmlType === "password") return "password";430  if (htmlType === "email") return "email";431  return null;432}433434async function openAutofillSelector(435  anchorField: HTMLInputElement,436  usernameEl: HTMLInputElement | null,437  passwordEl: HTMLInputElement | null,438  domainEntries: SelectorEntry[],439  searchableEntries: SelectorEntry[],440  domain: string,441  identityKind: "email" | "username",442  emailEl?: HTMLInputElement | null443): Promise<void> {444  // No saved entries for this site → signup/new-account mode.445  // Fetch vault identities for the identity-first surface and locate446  // the confirm-password field so "Copy & fill" can populate it too.447  const isSignup = domainEntries.length === 0;448  let savedIdentities: SavedIdentity[] | undefined;449  let confirmEl: HTMLInputElement | null = null;450  if (isSignup) {451    try {452      const idResp = await chrome.runtime.sendMessage({ type: "GET_IDENTITIES" }).catch(() => null) as453        { ok: boolean; data?: SavedIdentity[] } | null;454      if (idResp?.ok && Array.isArray(idResp.data)) savedIdentities = idResp.data;455    } catch { /* silent fallback */ }456457    const form = (passwordEl ?? usernameEl)?.closest("form") ?? document.body;458    const allPwInputs = Array.from(form.querySelectorAll<HTMLInputElement>("input[type='password']"));459    confirmEl = allPwInputs.find(460      (el) => el !== passwordEl && /confirm|repeat|verify/i.test(el.name + el.id + el.placeholder)461    ) ?? (allPwInputs.length >= 2 ? allPwInputs.find((el) => el !== passwordEl) ?? null : null);462  }463464  currentDismiss?.();465  currentAnchorField = anchorField;466  currentDismiss = showAutofillSelector(467    anchorField,468    domainEntries,469    async (id: string) => {470      currentDismiss = null;471      currentAnchorField = null;472      const entryResponse = await chrome.runtime.sendMessage({473        type: "GET_ENTRY_FOR_FILL",474        payload: { id },475      });476      const entry = (entryResponse as { ok: boolean; data?: VaultEntry }).data;477      if (entry) {478        const filledTOTPField = await handleAutofill(anchorField, usernameEl, passwordEl, entry, emailEl);479        recordFillSuccess(anchorField, usernameEl, passwordEl, filledTOTPField);480        // Offer to remember the current site for this entry only if none of481        // its known domains (primary + additional) match — otherwise the482        // user already mapped it and the prompt would be noise.483        const pageDomain = location.hostname.replace(/^www\./, "");484        const entryDomains = new Set<string>();485        for (const u of [entry.url, ...(entry.additionalUrls ?? [])]) {486          try {487            if (u) entryDomains.add(new URL(u).hostname.replace(/^www\./, ""));488          } catch { /* ignore unparseable */ }489        }490        if (pageDomain && entryDomains.size > 0 && !entryDomains.has(pageDomain)) {491          showRememberSiteToast(pageDomain, entry.id);492        }493      }494    },495    {496      domain,497      searchableEntries,498      isSignup,499      identityKind,500      savedIdentities,501      onFillFields: (username, password, email) => {502        const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;503        fillFields(usernameEl, passwordEl, username, password, form, getPageDomain(), emailEl, email);504        if (password && confirmEl) setNativeValue(confirmEl, password);505        recordFillSuccess(anchorField, usernameEl, passwordEl);506      },507      onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },508    }509  );510}511512async function openTOTPSelector(anchorField: HTMLInputElement, otpDigitBoxes?: HTMLInputElement[]): Promise<void> {513  if (!canOpen()) return;514  if (currentDismiss && currentAnchorField === anchorField) return;515  if (anchorField !== lastDismissedField) lastDismissedField = null;516  if (anchorField === lastDismissedField) return;517  if (wasAlreadyFilled(anchorField)) return;518519  const domain = getPageDomain();520  const result = await fetchTOTPEntries(domain);521522  if (result.locked) {523    currentDismiss?.();524    currentAnchorField = anchorField;525    currentDismiss = showAutofillSelector(526      anchorField,527      [],528      () => {},529      {530        domain,531        locked: true,532        onUnlocked: () => void openTOTPSelector(anchorField),533        onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },534      }535    );536    return;537  }538539  if (result.entries.length === 0) {540    lastDismissedField = anchorField;541    startDismissLock();542    showToast("No 2FA entries for this site — add a code in Peach first");543    return;544  }545546  currentDismiss?.();547  currentAnchorField = anchorField;548  currentDismiss = showTOTPSelector(549    anchorField,550    result.entries,551    async (id: string) => {552      try {553        const entryResponse = await chrome.runtime.sendMessage({554          type: "GET_ENTRY_FOR_FILL",555          payload: { id },556        }).catch(() => null) as { ok: boolean; data?: VaultEntry } | null;557        const entry = entryResponse?.ok ? entryResponse.data : undefined;558        const code = (entry as { totpCode?: string } | undefined)?.totpCode;559        if (!code) return;560        if (otpDigitBoxes && otpDigitBoxes.length > 1) {561          fillOTPDigitBoxes(otpDigitBoxes, code);562        } else {563          setNativeValue(anchorField, code);564        }565        recordFillSuccess(anchorField);566        showToast("2FA code filled");567      } finally {568        currentDismiss = null;569        currentAnchorField = null;570      }571    },572    {573      domain,574      onDismiss: () => {575        lastDismissedField = anchorField;576        startDismissLock();577        currentDismiss = null;578        currentAnchorField = null;579      },580    }581  );582}583584585async function handleFieldInteraction(586  anchorField?: HTMLInputElement | null,587  explicitSummon = false588): Promise<void> {589  const field = anchorField ?? getDeepActiveInput();590  if (!field) return;591  if (!isVisible(field)) return;592593  // Passkey toast is visible — don't open the credential selector alongside it.594  if (passkeyToastActive) return;595596  // Layer 2: post-dismiss global lock. Catches rapid focus moves between597  // fields immediately after Escape/click-outside.598  if (!canOpen()) return;599600  // If a selector is already open for this exact field, don't flicker it.601  if (currentDismiss && currentAnchorField === field) return;602603  // If focus moved to a different field, the previous per-field dismiss lock604  // no longer applies.605  if (field !== lastDismissedField) lastDismissedField = null;606  // Layer 1: the user explicitly dismissed this field's selector — don't607  // reopen it until focus has genuinely moved away and come back.608  if (field === lastDismissedField) return;609610  // Fill-success lock: Peach already filled this form (or fired a fill611  // anywhere on the page within the grace window). Sites often refocus an612  // input on submit click, on validation, or on a transition to a success613  // state — none of those should re-open the popup.614  if (wasAlreadyFilled(field)) return;615616  // Prevent two concurrent calls for the same field (e.g. focusin + icon click617  // firing simultaneously — the second call would dismiss the first's selector).618  if (pendingInteractions.has(field)) return;619  pendingInteractions.add(field);620621  try {622    // Multi-digit OTP entry: individual maxLength=1 boxes get no icon (too small)623    // but the TOTP selector opens on focus and fills every box at once.624    const otpGroup = findOTPDigitBoxGroup(field);625    if (otpGroup) {626      await openTOTPSelector(otpGroup[0]!, otpGroup);627      return;628    }629630    if (isTOTPField(field)) {631      const formFields = detectLoginFields();632      if (!isLoginForm(formFields) && !isSignupForm(formFields)) {633        await openTOTPSelector(field);634        return;635      }636    }637638    const fieldType = field.type.toLowerCase();639640    const mlPromise = contentMLDetector.predictBatch([field]).then((preds) => {641      return preds[0] ?? null;642    });643644    const mlPrediction = await new Promise<FieldPrediction | null>((resolve) => {645      const timeout = setTimeout(() => resolve(null), 150);646      mlPromise.then((pred) => {647        clearTimeout(timeout);648        resolve(pred);649      });650    });651652    if (passkeyToastActive) return;653654    if (!explicitSummon && fieldType !== "password" && mlPrediction && mlPrediction.type !== "username" && mlPrediction.type !== "email") {655      return;656    }657658    const autofillFieldType = resolveAutofillFieldType(field, mlPrediction?.type);659    if (autofillFieldType) {660      reattachListeners(field, autofillFieldType);661    }662663    let fields = detectLoginFields();664    const targets = resolveAutofillInteractionTargets(field, fields, explicitSummon);665    if (!targets.shouldOpen) {666      return;667    }668669    const domain = getPageDomain();670    const firstResult = await fetchAutofillEntries(domain);671    if (passkeyToastActive) return;672673    // Vault is locked — show an inline unlock prompt.674    // Re-triggering after unlock is handled by the VAULT_UNLOCKED message so675    // there is no double-trigger race between onUnlocked and the broadcast.676    if (firstResult.locked) {677      currentDismiss?.();678      currentAnchorField = field;679      currentDismiss = showAutofillSelector(680        field,681        [],682        () => {},683        { domain, locked: true, onDismiss: () => { lastDismissedField = field; startDismissLock(); } }684      );685      return;686    }687688    const entries = firstResult.entries;689    // Always fetch the vault-wide list so the inline popup's search affordance690    // can reach entries that don't match this domain — the user may have a691    // valid login filed under a different URL (e.g. corp account on a vanity692    // domain) and still want to fill it here.693    const allEntries = (await fetchAutofillEntries(domain, true)).entries;694695    if (passkeyToastActive) return;696697    const pwField = fields.find((f) => f.type === "password");698    // For email-first flows there is no password field on this step — that is expected.699    if (!explicitSummon && !pwField && !isEmailFirstForm(fields)) return;700    const usernameEl = targets.usernameEl;701    const passwordEl = targets.passwordEl;702    const emailEl = targets.emailEl;703704    await openAutofillSelector(705      field,706      usernameEl,707      passwordEl,708      entries,709      allEntries,710      domain,711      autofillFieldType === "email" ? "email" : "username",712      emailEl,713    );714  } finally {715    pendingInteractions.delete(field);716  }717}718719async function onFocusIn(e: Event): Promise<void> {720  // Submit-button focus: catch the brief refocus some sites do when the721  // user clicks the login/submit button. Without this guard, that focus722  // event reaches handleFieldInteraction → getDeepActiveInput, and on723  // pages where the button is also a labelled <input> we briefly attempt724  // to open the popup over the very button the user just clicked.725  if (isSubmitButton(e.target)) return;726  await handleFieldInteraction();727}728729function reattachListeners(730  el: HTMLInputElement,731  detectedType?: "password" | "username" | "email",732  contextFields?: ReturnType<typeof detectLoginFields>733): void {734  if (processedInputs.has(el)) return;735  if (!resolveAutofillFieldType(el, detectedType)) return;736  // Only inject icon when a credential form is present on the page737  const fields = contextFields ?? detectLoginFields();738  if (!isAnyCredentialForm(fields)) return;739740  const cleanup = injectFieldIcon(el, () => {741    currentDismiss?.();742    currentDismiss = null;743    lastDismissedField = null; // icon click is an explicit user open — clear per-field lock744    dismissLock = false; // ...and the global lock745    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }746    clearFillStateForExplicitSummon(el);747    el.focus({ preventScroll: true });748    void handleFieldInteraction(el, true);749  });750  processedInputs.set(el, cleanup);751}752753const debouncedReattach = debounce(() => {754  const allFields = detectLoginFields();755  if (!isAnyCredentialForm(allFields)) return;756  const newFields = allFields.filter(757    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)758  );759  for (const f of newFields) {760    reattachListeners(f.el, f.type, allFields);761  }762  // 200ms debounce — below this, Peach and the host page's reactive layer763  // fight over the same layout properties every frame on React/Vue/Angular764  // login forms (v1.4.14 regression, Projects.md §4.7). Do not lower.765}, 200);766767function setupMutationObserver(): void {768  const observer = new MutationObserver(debouncedReattach);769  observer.observe(document.body, {770    childList: true,771    subtree: true,772    attributes: true,773    attributeFilter: ["type", "autocomplete", "name", "id", "placeholder", "hidden"],774  });775}776777function initialScan(aggressionLevel = 0, isFinalPass = false) {778  const allFields = detectLoginFields();779  const hasKnownForm = isAnyCredentialForm(allFields);780781  if (aggressionLevel === 0 && !hasKnownForm) return;782783  const newFields = allFields.filter(784    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)785  );786787  for (const f of newFields) {788    reattachListeners(f.el, f.type, allFields);789  }790791  // Level 2, final pass: inject icon on any visible password field even if792  // the form-context gate in reattachListeners would normally skip it.793  if (aggressionLevel >= 2 && isFinalPass && newFields.length === 0) {794    const pwInputs = document.querySelectorAll<HTMLInputElement>('input[type="password"]');795    for (const el of pwInputs) {796      if (isVisible(el) && !processedInputs.has(el)) {797        const cleanup = injectFieldIcon(el, () => {798          currentDismiss?.();799          currentDismiss = null;800          lastDismissedField = null;801          dismissLock = false;802          if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }803          clearFillStateForExplicitSummon(el);804          el.focus({ preventScroll: true });805          void handleFieldInteraction(el, true);806        });807        processedInputs.set(el, cleanup);808      }809    }810  }811}812813// ── TOTP-only fields ───────────────────────────────────────────────────────814// After a username/password submission, many sites swap the whole form for a815// lone "verification code" input. The credential selector intentionally gates816// on login/signup forms, so TOTP fields need a narrow path of their own.817const processedTOTPInputs = new WeakMap<HTMLInputElement, () => void>();818819function hasLoginOrSignupForm(): boolean {820  const fields = detectLoginFields();821  return isAnyCredentialForm(fields);822}823824function injectTOTPFieldIcon(field: HTMLInputElement): void {825  if (processedTOTPInputs.has(field)) return;826  const cleanup = injectFieldIcon(field, () => {827    currentDismiss?.();828    currentDismiss = null;829    currentAnchorField = null;830    lastDismissedField = null;831    dismissLock = false;832    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }833    clearFillStateForExplicitSummon(field);834    field.focus({ preventScroll: true });835    void openTOTPSelector(field);836  });837  processedTOTPInputs.set(field, cleanup);838}839840function scanTOTPFields(): void {841  if (hasLoginOrSignupForm()) return;842  const inputs = document.querySelectorAll<HTMLInputElement>("input");843  for (const input of inputs) {844    if (!isTOTPField(input)) continue;845    injectTOTPFieldIcon(input);846  }847}848849function setupTOTPAutofill(): void {850  setTimeout(scanTOTPFields, 0);851  setTimeout(scanTOTPFields, 500);852  setTimeout(scanTOTPFields, 1500);853854  const debouncedScan = debounce(scanTOTPFields, 200);855  new MutationObserver(debouncedScan).observe(document.body, {856    childList: true,857    subtree: true,858    attributes: true,859    attributeFilter: ["autocomplete", "name", "id", "placeholder", "hidden"],860  });861862  document.addEventListener("focusin", (e) => {863    const target = e.target;864    if (!(target instanceof HTMLInputElement)) return;865    if (hasLoginOrSignupForm()) return;866    if (!isTOTPField(target)) return;867    injectTOTPFieldIcon(target);868  }, true);869}870871document.addEventListener("focusin", onFocusIn);872873setupMutationObserver();874setupTOTPAutofill();875setupSaveDetection();876setupCardAutofill();877878// SPA navigation reset: the content script does not reload across in-app879// route changes (history.pushState, hash navigation, framework routers).880// When the URL changes we clear the page-level fill timestamp so the next881// page works normally; filledForms (a WeakSet) self-empties as old form882// elements leave the DOM. subtree:false because route swaps reliably883// mutate document.body's direct children — subtree:true would fire on884// every internal DOM update and cost us a re-check per mutation.885let lastObservedUrl = location.href;886new MutationObserver(() => {887  if (location.href !== lastObservedUrl) {888    lastObservedUrl = location.href;889    pageFilledAt = null;890  }891}).observe(document.body, { childList: true, subtree: false });892893// Async init: check recall map before running the initial scans so we can894// apply the right aggression level for domains the user has needed before.895(async () => {896  let aggressionLevel = 0;897  try {898    const resp = await chrome.runtime.sendMessage({ type: "GET_SETTINGS" });899    const s = (resp as { ok: boolean; data?: { manualSummonDomains?: Record<string, { summonCount: number }> } }).data;900    const domain = getPageDomain();901    const record = domain ? s?.manualSummonDomains?.[domain] : undefined;902    aggressionLevel = !record ? 0 : record.summonCount >= 2 ? 2 : 1;903  } catch { /* SW may be starting up; proceed with normal scan */ }904905  setTimeout(() => initialScan(aggressionLevel, false), 0);906  setTimeout(() => initialScan(aggressionLevel, false), 500);907  setTimeout(() => initialScan(aggressionLevel, true), 1500);908})();909910// ── Card autofill (State 7) ─────────────────────────────────────────911// Card forms get a parallel injection path. The login icon-injection gate912// in reattachListeners deliberately skips non-text fields, so we wire913// cards independently rather than retrofit AUTOFILL_FIELD_TYPES — keeping914// card detection contained makes the boundary easy to follow.915const processedCardInputs = new WeakMap<HTMLInputElement, () => void>();916let currentCardDismiss: (() => void) | null = null;917let currentCardAnchor: HTMLInputElement | null = null;918let lastDismissedCardField: HTMLInputElement | null = null;919920async function fetchSavedCards(): Promise<CardSelectorEntry[]> {921  const resp = await chrome.runtime.sendMessage({922    type: "AUTOFILL_QUERY",923    payload: { domain: getPageDomain(), kind: "card" },924  }).catch(() => null);925  const r = resp as { ok: boolean; data?: CardSelectorEntry[] } | null;926  return r?.ok ? (r.data ?? []) : [];927}928929async function openCardSelector(anchor: HTMLInputElement): Promise<void> {930  if (!canOpen()) return;931  if (currentCardDismiss && currentCardAnchor === anchor) return;932  if (anchor === lastDismissedCardField) return;933  if (anchor !== lastDismissedCardField) lastDismissedCardField = null;934  if (wasAlreadyFilled(anchor)) return;935936  const cards = await fetchSavedCards();937  if (cards.length === 0) return; // no saved cards → nothing to offer938939  const cardForm = detectCardForm();940  if (!cardForm?.number) return;941942  currentCardDismiss?.();943  currentCardAnchor = anchor;944  currentCardDismiss = showCardSelector(945    anchor,946    cards,947    {948      domain: getPageDomain(),949      onFill: (entry) => {950        if (!cardForm) return;951        fillCardForm(cardForm, {952          cardNumber: entry.cardNumber ?? "",953          expMonth: entry.expMonth ?? "",954          expYear: entry.expYear ?? "",955          cvc: entry.cvc ?? "",956          cardholderName: entry.cardholderName ?? "",957        });958        // All four card field types share the same form — recording the959        // number field's form is sufficient to suppress reopens on any of960        // them via wasAlreadyFilled().961        recordFillSuccess(cardForm.number, cardForm.cvc, cardForm.expiryCombo, cardForm.name);962        currentCardDismiss = null;963        currentCardAnchor = null;964      },965      onDismiss: () => {966        lastDismissedCardField = anchor;967        startDismissLock();968        currentCardDismiss = null;969        currentCardAnchor = null;970      },971    }972  );973}974975function injectCardIcon(field: HTMLInputElement): void {976  if (processedCardInputs.has(field)) return;977  const cleanup = injectFieldIcon(field, () => {978    currentCardDismiss?.();979    currentCardDismiss = null;980    lastDismissedCardField = null;981    dismissLock = false;982    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }983    clearFillStateForExplicitSummon(field);984    field.focus({ preventScroll: true });985    void openCardSelector(field);986  });987  processedCardInputs.set(field, cleanup);988}989990function setupCardAutofill(): void {991  function scan() {992    const cardForm = detectCardForm();993    if (!cardForm?.number) return;994    if (!isVisible(cardForm.number)) return;995    injectCardIcon(cardForm.number);996  }997998  // Initial detection sweep — same retry cadence as login fields so999  // late-hydrating SPA checkout pages get caught.1000  setTimeout(scan, 0);1001  setTimeout(scan, 500);1002  setTimeout(scan, 1500);10031004  // Re-scan on DOM mutation (separate from the login MutationObserver1005  // because card forms typically appear on a single navigation event,1006  // not field-by-field — coarser observation is sufficient here).1007  let pending = false;1008  new MutationObserver(() => {1009    if (pending) return;1010    pending = true;1011    setTimeout(() => { pending = false; scan(); }, 200);1012  }).observe(document.body, { childList: true, subtree: true });10131014  // Field-focus path: on focus of a cc-number input, ensure icon is1015  // present and consider opening the selector when the user explicitly1016  // clicks into the card number field.1017  document.addEventListener("focusin", (e) => {1018    const target = e.target;1019    if (!(target instanceof HTMLInputElement)) return;1020    const cardForm = detectCardForm();1021    if (cardForm?.number === target) {1022      injectCardIcon(target);1023    }1024  }, true);1025}10261027chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {1028  // Ignore anything not originating from our own background/service worker.1029  if (sender.id !== chrome.runtime.id) return;1030  if (msg?.type === "GET_SITE_PASSWORD_POLICY") {1031    const policy = detectPasswordPolicy();1032    sendResponse({ ok: true, data: policy });1033    return true;1034  }1035  if (msg?.type === "PING") {1036    sendResponse({ ok: true });1037    return true;1038  }1039  if (msg?.type === "SUMMON_AUTOFILL") {1040    const source = (msg as { type: string; source?: string }).source;1041    const isShortcut = source === "shortcut";1042    const isPasskeyUnlock = source === "passkey-unlock";10431044    const activeInput = getDeepActiveInput();1045    const fields = detectLoginFields();1046    const hasForm = isAnyCredentialForm(fields);10471048    if (hasForm) {1049      // Prefer the currently focused field if it's a login field, otherwise1050      // fall back to the first password field, then username/email.1051      const inForm = activeInput && fields.some(f => f.el === activeInput);1052      const target = inForm1053        ? activeInput1054        : (fields.find(f => f.type === "password")?.el1055            ?? fields.find(f => f.type === "username" || f.type === "email")?.el);1056      if (target) {1057        // Explicit user summon (shortcut or extension button) — bypass all1058        // suppression layers. The user is asking for the popup right now.1059        clearFillStateForExplicitSummon(target);1060        dismissLock = false;1061        if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1062        lastDismissedField = null;1063        void handleFieldInteraction(target);1064      }1065    } else if (isPasskeyUnlock) {1066      // Vault is locked during a passkey GET request. Show the inline unlock1067      // prompt anchored to whatever element is focused on the page (typically1068      // the passkey/sign-in button the user just tapped).1069      const anchor = (document.activeElement instanceof HTMLElement && document.activeElement !== document.body)1070        ? document.activeElement as unknown as HTMLInputElement1071        : null;1072      if (anchor) {1073        currentDismiss?.();1074        currentAnchorField = null;1075        passkeySummonActive = true;1076        currentDismiss = showAutofillSelector(anchor, [], () => {}, {1077          domain: getPageDomain(),1078          locked: true,1079          onDismiss: () => { passkeySummonActive = false; },1080        });1081      }1082    } else if (isShortcut) {1083      // Shortcut on a page with no login form — show clipboard-copy search mode.1084      showSearchPalette();1085    }10861087    // Record this domain for the recall system when triggered via shortcut.1088    if (isShortcut) {1089      const domain = getPageDomain();1090      if (domain) {1091        chrome.runtime.sendMessage({ type: "RECORD_MANUAL_SUMMON", payload: { domain } }).catch(() => {});1092      }1093    }10941095    sendResponse({ ok: hasForm || isShortcut || isPasskeyUnlock });1096    return true;1097  }1098  if (msg?.type === "PASSKEY_PRO_GATE") {1099    // Background rejected a passkey request for a free user. Show State 111100    // so they know what happened and can choose to upgrade.1101    showPasskeyProGate();1102    sendResponse({ ok: true });1103    return true;1104  }1105  if (msg?.type === "SHOW_PASSKEY_TOAST") {1106    // Block autofill selector for the lifetime of the toast and dismiss anything open.1107    passkeyToastActive = true;1108    if (currentDismiss) {1109      currentDismiss();1110      currentDismiss = null;1111      currentAnchorField = null;1112    }1113    return false; // inject.tsx owns the toast and calls sendResponse1114  }1115  if (msg?.type === "DISMISS_PASSKEY_TOAST") {1116    passkeyToastActive = false;1117    return false; // inject.tsx handles the actual dismissal1118  }1119  if (msg?.type === "VAULT_UNLOCKED") {1120    if (passkeySummonActive) {1121      // This unlock was for a pending passkey GET request. Just dismiss the1122      // inline popup — the passkey approval toast takes over from here.1123      passkeySummonActive = false;1124      if (currentDismiss) {1125        currentDismiss();1126        currentDismiss = null;1127        currentAnchorField = null;1128      }1129      sendResponse({ ok: true });1130      return true;1131    }1132    // Normal autofill path: close the locked-state prompt and re-open with1133    // fresh entry data at the same anchor field.1134    const savedField = currentAnchorField;1135    if (currentDismiss) {1136      currentDismiss();1137      currentDismiss = null;1138      currentAnchorField = null;1139    }1140    void handleFieldInteraction(savedField ?? undefined);1141    sendResponse({ ok: true });1142    return true;1143  }1144  return true;1145});11461147// inject.tsx posts this when the passkey toast closes (approve, deny, or timeout)1148// so we know it's safe to allow autofill again.1149window.addEventListener("message", (e: MessageEvent) => {1150  // Reject postMessages from cross-frame senders — only the same window's1151  // injected toast may flip this flag.1152  if (e.source !== window) return;1153  const d = e.data as { source?: string; type?: string } | undefined;1154  if (d?.source === "peach-passkey-toast" && d?.type === "toast-closed") {1155    passkeyToastActive = false;1156  }1157});11581159// ── Firefox passkey detection bridge (legacy observer path) ─────────────1160//1161// Pre-v2.12.0 the MAIN-world `passkeys-firefox.ts` was an observer — it1162// emitted `peach-passkey-firefox` postMessages so this content script could1163// surface State 12 (an inline "Save passkey to Peach" offer). v2.12.01164// replaced the observer with a full interception proxy (the page never1165// reaches a real navigator.credentials.create on Firefox anymore), and the1166// approval UI is opened by the background as part of the ceremony itself.1167// When the proxy is active the offer would be redundant noise, so the1168// listener gates on the flag. Once the proxy is removed (Firefox ships1169// webAuthenticationProxy) this whole block goes too.1170if (!FIREFOX_USE_CONTENT_SCRIPT_PROXY) {1171  let lastPasskeyOfferAt = 0;1172  const PASSKEY_OFFER_COOLDOWN_MS = 30_000;11731174  window.addEventListener("message", (event: MessageEvent) => {1175    if (event.source !== window) return;1176    const data = event.data as { source?: string; type?: string; rpId?: string; rpName?: string; userName?: string; userDisplayName?: string } | undefined;1177    if (!data || data.source !== "peach-passkey-firefox") return;1178    if (detectBrowser() !== "firefox") return;1179    if (data.type !== "create") return;11801181    // Cooldown: a single page interaction can fire multiple credentials.create1182    // calls. Show the offer at most once per 30 seconds per page session.1183    const now = Date.now();1184    if (now - lastPasskeyOfferAt < PASSKEY_OFFER_COOLDOWN_MS) return;1185    lastPasskeyOfferAt = now;11861187    const domain = location.hostname.replace(/^www\./, "");1188    chrome.runtime.sendMessage({1189      type: "GET_PASSKEY_OFFER_DECLINED",1190      payload: { domain },1191    }).then((res: { ok: boolean; data?: boolean } | undefined) => {1192      if (res?.data === true) return;1193      const rpId = data.rpId ?? domain;1194      showPasskeyRegistrationOffer({1195        rpId,1196        rpName: data.rpName,1197        userName: data.userName,1198        userDisplayName: data.userDisplayName,1199      });1200    }).catch(() => {});1201  });1202}12031204// Surface State 11 (passkey-available) only when it adds value:1205//   - Cross-browser entry: Chrome passkey on Firefox or vice versa — neither1206//     browser will auto-route, so the banner explains the re-register need.1207//   - Firefox + same-browser entry: Firefox has no equivalent of1208//     webAuthenticationProxy, so without a banner the user has no signal that1209//     Peach is the source.1210// On Chrome with a same-browser entry: skip — webAuthenticationProxy handles1211// the page's own credentials.get transparently and the popup approval view1212// already surfaces it. A banner here would just be noise.1213//1214// Dedupe across navigation: each navigation re-injects this content script.1215// chrome.storage.session keyed by domain is the natural per-tab/per-session1216// memory; session storage clears when the user closes the browser.1217{1218  function checkPasskeyAvailability() {1219    const domain = location.hostname.replace(/^www\./, "");1220    if (!domain) return;1221    const sessionKey = `peach_state11_shown:${domain}`;1222    chrome.storage.session?.get(sessionKey).then((stored) => {1223      if (stored && (stored as Record<string, unknown>)[sessionKey]) return;1224      chrome.runtime.sendMessage({1225        type: "GET_PASSKEY_FOR_DOMAIN",1226        payload: { domain },1227      }).then((res: { ok: boolean; data?: { rpId: string; userName: string; browser?: "chrome" | "firefox" } | null } | undefined) => {1228        const data = res?.data;1229        if (!data) return;1230        const current = detectBrowser();1231        const isCrossBrowser =1232          data.browser && current !== "unknown" && data.browser !== current;1233        const valuableOnFirefox = current === "firefox";1234        if (!isCrossBrowser && !valuableOnFirefox) return;1235        chrome.storage.session?.set({ [sessionKey]: Date.now() }).catch(() => {});1236        showPasskeyAvailable({1237          rpId: data.rpId,1238          userName: data.userName,1239          fromBrowser: data.browser,1240          currentBrowser: current,1241        });1242      }).catch(() => {});1243    }).catch(() => {});1244  }12451246  // Defer until DOM is interactive — content_scripts run at document_idle but1247  // some pages still mutate visibly afterwards. A short delay also avoids1248  // surfacing the State 11 toast while the user is in the middle of typing.1249  if (document.readyState === "loading") {1250    document.addEventListener("DOMContentLoaded", () => setTimeout(checkPasskeyAvailability, 800));1251  } else {1252    setTimeout(checkPasskeyAvailability, 800);1253  }1254}