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        // MV-1: vault-wide search list is a cross-domain summon — the user253        // explicitly picked this entry to fill on this page.254        const resp = await chrome.runtime.sendMessage({ type: "GET_ENTRY_FOR_FILL", payload: { id: entry.id, explicitSummon: true } });255        const r = resp as { ok: boolean; data?: { password?: string } };256        if (r.ok && r.data?.password) {257          let alreadyWritten = false;258          try {259            await navigator.clipboard.writeText(r.data.password);260            alreadyWritten = true;261          } catch (err) {262            console.warn("[Peach] clipboard write denied:", err);263          }264          const copyResp = await chrome.runtime.sendMessage({265            type: "COPY",266            payload: { text: r.data.password, label: "Password", alreadyWritten },267          }) as { ok?: boolean } | undefined;268          if (alreadyWritten || copyResp?.ok) {269            showToast("Password copied");270          } else {271            showToast("Could not copy password — clipboard blocked");272          }273        } else {274          showToast("Could not copy password");275        }276        close();277        document.removeEventListener("keydown", onKeyDown, true);278      };279      list.appendChild(row);280    }281  }282283  searchInput.oninput = () => { query = searchInput.value; render(); };284285  fetchAutofillEntries(getPageDomain(), true).then(result => {286    if (result.locked) { showToast("Vault is locked — open Peach to unlock"); close(); return; }287    allEntries = result.entries;288    render();289    searchInput.focus();290  });291}292293function findTOTPField(root: Document | Element = document): HTMLInputElement | null {294  const inputs = root.querySelectorAll<HTMLInputElement>("input");295  for (const input of inputs) {296    if (isTOTPField(input)) return input;297  }298  return null;299}300301function findSameLoginTOTPField(passwordEl: HTMLInputElement): HTMLInputElement | null {302  const form = passwordEl.closest("form");303  return findTOTPField(form ?? document);304}305306307async function handleAutofill(308  _field: HTMLInputElement,309  usernameEl: HTMLInputElement | null,310  passwordEl: HTMLInputElement | null,311  entry: VaultEntry,312  emailEl?: HTMLInputElement | null313): Promise<HTMLInputElement | null> {314  if (!entry.username && !entry.password && !entry.email) return null;315  const pageDomain = getPageDomain();316  const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;317  // Fill the email field with entry.email if set; fall back to entry.username when318  // it looks like an email address (sites that store email-as-username and have a319  // separate email field on signup forms).320  const emailValue = entry.email ?? (entry.username?.includes("@") ? entry.username : "");321  fillFields(usernameEl, passwordEl, entry.username ?? "", entry.password ?? "", form, pageDomain, emailEl, emailValue);322  let filledTOTPField: HTMLInputElement | null = null;323324  if (entry.canary) {325    chrome.runtime.sendMessage({326      type: "FIRE_CANARY_PING",327      payload: {328        webhookUrl: entry.canary.webhookUrl,329        entryTitle: entry.title,330        trigger: "autofilled",331      },332    }).catch(() => {});333    chrome.runtime.sendMessage({334      type: "UPDATE_ENTRY",335      payload: {336        id: entry.id,337        patch: {338          canary: {339            ...entry.canary,340            lastPinged: Date.now(),341            pingCount: (entry.canary.pingCount ?? 0) + 1,342          },343        },344      },345    }).catch(() => {});346  }347348  // The background sends a freshly-generated 6-digit code (totpCode), never the349  // base32 seed (SEV-3-C). Fill the code straight in.350  const totpCode = (entry as { totpCode?: string }).totpCode;351  if (totpCode) {352    const code = totpCode;353    const totpField = passwordEl ? findSameLoginTOTPField(passwordEl) : null;354    if (fillTOTPCode(totpField, code)) {355      filledTOTPField = totpField;356    }357    let alreadyWritten = false;358    try {359      await navigator.clipboard.writeText(code);360      alreadyWritten = true;361    } catch (err) {362      console.warn("[Peach] clipboard write denied:", err);363    }364    const response = await chrome.runtime.sendMessage({365      type: "COPY",366      payload: { text: code, label: "TOTP", alreadyWritten },367    });368    if (filledTOTPField) {369      showToast("2FA code filled");370    } else if (alreadyWritten || (response as { ok?: boolean }).ok) {371      // Don't render the live code into the light-DOM toast — the page can read372      // it from the DOM and consume the one-time code (audit LOW). The code is373      // already on the clipboard; just confirm.374      showToast("2FA code copied");375    } else {376      showToast("Could not copy TOTP — clipboard blocked");377    }378  }379380  return filledTOTPField;381}382383async function fetchAutofillEntries(384  domain: string,385  includeAll = false386): Promise<{ entries: SelectorEntry[]; locked: boolean }> {387  const response = await chrome.runtime.sendMessage({388    type: "AUTOFILL_QUERY",389    payload: { domain, includeAll },390  });391  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };392  if (!res.ok && res.error === "vault_locked") {393    return { entries: [], locked: true };394  }395  return { entries: res.data ?? [], locked: false };396}397398async function fetchTOTPEntries(399  domain: string400): Promise<{ entries: SelectorEntry[]; locked: boolean }> {401  const response = await chrome.runtime.sendMessage({402    type: "AUTOFILL_QUERY",403    payload: { domain, kind: "totp" },404  });405  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };406  if (!res.ok && res.error === "vault_locked") {407    return { entries: [], locked: true };408  }409  return { entries: res.data ?? [], locked: false };410}411412413function resolveAutofillFieldType(414  el: HTMLInputElement,415  predictedType?: FieldPrediction["type"] | null416): "password" | "username" | "email" | null {417  if (418    predictedType === "password" ||419    predictedType === "username" ||420    predictedType === "email"421  ) {422    return predictedType;423  }424425  const detected = detectLoginFields().find((field) => field.el === el)?.type;426  if (detected && AUTOFILL_FIELD_TYPES.has(detected)) {427    return detected;428  }429430  const htmlType = el.type.toLowerCase();431  if (htmlType === "password") return "password";432  if (htmlType === "email") return "email";433  return null;434}435436async function openAutofillSelector(437  anchorField: HTMLInputElement,438  usernameEl: HTMLInputElement | null,439  passwordEl: HTMLInputElement | null,440  domainEntries: SelectorEntry[],441  searchableEntries: SelectorEntry[],442  domain: string,443  identityKind: "email" | "username",444  emailEl?: HTMLInputElement | null445): Promise<void> {446  // No saved entries for this site → signup/new-account mode.447  // Fetch vault identities for the identity-first surface and locate448  // the confirm-password field so "Copy & fill" can populate it too.449  const isSignup = domainEntries.length === 0;450  let savedIdentities: SavedIdentity[] | undefined;451  let confirmEl: HTMLInputElement | null = null;452  if (isSignup) {453    try {454      const idResp = await chrome.runtime.sendMessage({ type: "GET_IDENTITIES" }).catch(() => null) as455        { ok: boolean; data?: SavedIdentity[] } | null;456      if (idResp?.ok && Array.isArray(idResp.data)) savedIdentities = idResp.data;457    } catch { /* silent fallback */ }458459    const form = (passwordEl ?? usernameEl)?.closest("form") ?? document.body;460    const allPwInputs = Array.from(form.querySelectorAll<HTMLInputElement>("input[type='password']"));461    confirmEl = allPwInputs.find(462      (el) => el !== passwordEl && /confirm|repeat|verify/i.test(el.name + el.id + el.placeholder)463    ) ?? (allPwInputs.length >= 2 ? allPwInputs.find((el) => el !== passwordEl) ?? null : null);464  }465466  currentDismiss?.();467  currentAnchorField = anchorField;468  currentDismiss = showAutofillSelector(469    anchorField,470    domainEntries,471    async (id: string) => {472      currentDismiss = null;473      currentAnchorField = null;474      const entryResponse = await chrome.runtime.sendMessage({475        type: "GET_ENTRY_FOR_FILL",476        payload: { id },477      });478      const entry = (entryResponse as { ok: boolean; data?: VaultEntry }).data;479      if (entry) {480        const filledTOTPField = await handleAutofill(anchorField, usernameEl, passwordEl, entry, emailEl);481        recordFillSuccess(anchorField, usernameEl, passwordEl, filledTOTPField);482        // Offer to remember the current site for this entry only if none of483        // its known domains (primary + additional) match — otherwise the484        // user already mapped it and the prompt would be noise.485        const pageDomain = location.hostname.replace(/^www\./, "");486        const entryDomains = new Set<string>();487        for (const u of [entry.url, ...(entry.additionalUrls ?? [])]) {488          try {489            if (u) entryDomains.add(new URL(u).hostname.replace(/^www\./, ""));490          } catch { /* ignore unparseable */ }491        }492        if (pageDomain && entryDomains.size > 0 && !entryDomains.has(pageDomain)) {493          showRememberSiteToast(pageDomain, entry.id);494        }495      }496    },497    {498      domain,499      searchableEntries,500      isSignup,501      identityKind,502      hasEmailField: !!emailEl,503      savedIdentities,504      onFillFields: (username, password, email) => {505        const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;506        fillFields(usernameEl, passwordEl, username, password, form, getPageDomain(), emailEl, email);507        if (password && confirmEl) setNativeValue(confirmEl, password);508        recordFillSuccess(anchorField, usernameEl, passwordEl);509      },510      onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },511    }512  );513}514515async function openTOTPSelector(anchorField: HTMLInputElement, otpDigitBoxes?: HTMLInputElement[]): Promise<void> {516  if (!canOpen()) return;517  if (currentDismiss && currentAnchorField === anchorField) return;518  if (anchorField !== lastDismissedField) lastDismissedField = null;519  if (anchorField === lastDismissedField) return;520  if (wasAlreadyFilled(anchorField)) return;521522  const domain = getPageDomain();523  const result = await fetchTOTPEntries(domain);524525  if (result.locked) {526    currentDismiss?.();527    currentAnchorField = anchorField;528    currentDismiss = showAutofillSelector(529      anchorField,530      [],531      () => {},532      {533        domain,534        locked: true,535        onUnlocked: () => void openTOTPSelector(anchorField),536        onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },537      }538    );539    return;540  }541542  if (result.entries.length === 0) {543    lastDismissedField = anchorField;544    startDismissLock();545    showToast("No 2FA entries for this site — add a code in Peach first");546    return;547  }548549  currentDismiss?.();550  currentAnchorField = anchorField;551  currentDismiss = showTOTPSelector(552    anchorField,553    result.entries,554    async (id: string) => {555      try {556        const entryResponse = await chrome.runtime.sendMessage({557          type: "GET_ENTRY_FOR_FILL",558          payload: { id },559        }).catch(() => null) as { ok: boolean; data?: VaultEntry } | null;560        const entry = entryResponse?.ok ? entryResponse.data : undefined;561        const code = (entry as { totpCode?: string } | undefined)?.totpCode;562        if (!code) return;563        if (otpDigitBoxes && otpDigitBoxes.length > 1) {564          fillOTPDigitBoxes(otpDigitBoxes, code);565        } else {566          setNativeValue(anchorField, code);567        }568        recordFillSuccess(anchorField);569        showToast("2FA code filled");570      } finally {571        currentDismiss = null;572        currentAnchorField = null;573      }574    },575    {576      domain,577      onDismiss: () => {578        lastDismissedField = anchorField;579        startDismissLock();580        currentDismiss = null;581        currentAnchorField = null;582      },583    }584  );585}586587588async function handleFieldInteraction(589  anchorField?: HTMLInputElement | null,590  explicitSummon = false591): Promise<void> {592  const field = anchorField ?? getDeepActiveInput();593  if (!field) return;594  if (!isVisible(field)) return;595596  // Passkey toast is visible — don't open the credential selector alongside it.597  if (passkeyToastActive) return;598599  // Layer 2: post-dismiss global lock. Catches rapid focus moves between600  // fields immediately after Escape/click-outside.601  if (!canOpen()) return;602603  // If a selector is already open for this exact field, don't flicker it.604  if (currentDismiss && currentAnchorField === field) return;605606  // If focus moved to a different field, the previous per-field dismiss lock607  // no longer applies.608  if (field !== lastDismissedField) lastDismissedField = null;609  // Layer 1: the user explicitly dismissed this field's selector — don't610  // reopen it until focus has genuinely moved away and come back.611  if (field === lastDismissedField) return;612613  // Fill-success lock: Peach already filled this form (or fired a fill614  // anywhere on the page within the grace window). Sites often refocus an615  // input on submit click, on validation, or on a transition to a success616  // state — none of those should re-open the popup.617  if (wasAlreadyFilled(field)) return;618619  // Prevent two concurrent calls for the same field (e.g. focusin + icon click620  // firing simultaneously — the second call would dismiss the first's selector).621  if (pendingInteractions.has(field)) return;622  pendingInteractions.add(field);623624  try {625    // Multi-digit OTP entry: individual maxLength=1 boxes get no icon (too small)626    // but the TOTP selector opens on focus and fills every box at once.627    const otpGroup = findOTPDigitBoxGroup(field);628    if (otpGroup) {629      await openTOTPSelector(otpGroup[0]!, otpGroup);630      return;631    }632633    if (isTOTPField(field)) {634      const formFields = detectLoginFields();635      if (!isLoginForm(formFields) && !isSignupForm(formFields)) {636        await openTOTPSelector(field);637        return;638      }639    }640641    const fieldType = field.type.toLowerCase();642643    const mlPromise = contentMLDetector.predictBatch([field]).then((preds) => {644      return preds[0] ?? null;645    });646647    const mlPrediction = await new Promise<FieldPrediction | null>((resolve) => {648      const timeout = setTimeout(() => resolve(null), 150);649      mlPromise.then((pred) => {650        clearTimeout(timeout);651        resolve(pred);652      });653    });654655    if (passkeyToastActive) return;656657    if (!explicitSummon && fieldType !== "password" && mlPrediction && mlPrediction.type !== "username" && mlPrediction.type !== "email") {658      return;659    }660661    const autofillFieldType = resolveAutofillFieldType(field, mlPrediction?.type);662    if (autofillFieldType) {663      reattachListeners(field, autofillFieldType);664    }665666    let fields = detectLoginFields();667    const targets = resolveAutofillInteractionTargets(field, fields, explicitSummon);668    if (!targets.shouldOpen) {669      return;670    }671672    const domain = getPageDomain();673    const firstResult = await fetchAutofillEntries(domain);674    if (passkeyToastActive) return;675676    // Vault is locked — show an inline unlock prompt.677    // Re-triggering after unlock is handled by the VAULT_UNLOCKED message so678    // there is no double-trigger race between onUnlocked and the broadcast.679    if (firstResult.locked) {680      currentDismiss?.();681      currentAnchorField = field;682      currentDismiss = showAutofillSelector(683        field,684        [],685        () => {},686        { domain, locked: true, onDismiss: () => { lastDismissedField = field; startDismissLock(); } }687      );688      return;689    }690691    const entries = firstResult.entries;692    // Always fetch the vault-wide list so the inline popup's search affordance693    // can reach entries that don't match this domain — the user may have a694    // valid login filed under a different URL (e.g. corp account on a vanity695    // domain) and still want to fill it here.696    const allEntries = (await fetchAutofillEntries(domain, true)).entries;697698    if (passkeyToastActive) return;699700    const pwField = fields.find((f) => f.type === "password");701    // For email-first flows there is no password field on this step — that is expected.702    if (!explicitSummon && !pwField && !isEmailFirstForm(fields)) return;703    const usernameEl = targets.usernameEl;704    const passwordEl = targets.passwordEl;705    const emailEl = targets.emailEl;706707    await openAutofillSelector(708      field,709      usernameEl,710      passwordEl,711      entries,712      allEntries,713      domain,714      autofillFieldType === "email" ? "email" : "username",715      emailEl,716    );717  } finally {718    pendingInteractions.delete(field);719  }720}721722async function onFocusIn(e: Event): Promise<void> {723  // Submit-button focus: catch the brief refocus some sites do when the724  // user clicks the login/submit button. Without this guard, that focus725  // event reaches handleFieldInteraction → getDeepActiveInput, and on726  // pages where the button is also a labelled <input> we briefly attempt727  // to open the popup over the very button the user just clicked.728  if (isSubmitButton(e.target)) return;729  await handleFieldInteraction();730}731732function reattachListeners(733  el: HTMLInputElement,734  detectedType?: "password" | "username" | "email",735  contextFields?: ReturnType<typeof detectLoginFields>736): void {737  if (processedInputs.has(el)) return;738  if (!resolveAutofillFieldType(el, detectedType)) return;739  // Only inject icon when a credential form is present on the page740  const fields = contextFields ?? detectLoginFields();741  if (!isAnyCredentialForm(fields)) return;742743  const cleanup = injectFieldIcon(el, () => {744    currentDismiss?.();745    currentDismiss = null;746    lastDismissedField = null; // icon click is an explicit user open — clear per-field lock747    dismissLock = false; // ...and the global lock748    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }749    clearFillStateForExplicitSummon(el);750    el.focus({ preventScroll: true });751    void handleFieldInteraction(el, true);752  });753  processedInputs.set(el, cleanup);754}755756const debouncedReattach = debounce(() => {757  const allFields = detectLoginFields();758  if (!isAnyCredentialForm(allFields)) return;759  const newFields = allFields.filter(760    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)761  );762  for (const f of newFields) {763    reattachListeners(f.el, f.type, allFields);764  }765  // 200ms debounce — below this, Peach and the host page's reactive layer766  // fight over the same layout properties every frame on React/Vue/Angular767  // login forms (v1.4.14 regression, Projects.md §4.7). Do not lower.768}, 200);769770function setupMutationObserver(): void {771  const observer = new MutationObserver(debouncedReattach);772  observer.observe(document.body, {773    childList: true,774    subtree: true,775    attributes: true,776    attributeFilter: ["type", "autocomplete", "name", "id", "placeholder", "hidden"],777  });778}779780function initialScan(aggressionLevel = 0, isFinalPass = false) {781  const allFields = detectLoginFields();782  const hasKnownForm = isAnyCredentialForm(allFields);783784  if (aggressionLevel === 0 && !hasKnownForm) return;785786  const newFields = allFields.filter(787    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)788  );789790  for (const f of newFields) {791    reattachListeners(f.el, f.type, allFields);792  }793794  // Level 2, final pass: inject icon on any visible password field even if795  // the form-context gate in reattachListeners would normally skip it.796  if (aggressionLevel >= 2 && isFinalPass && newFields.length === 0) {797    const pwInputs = document.querySelectorAll<HTMLInputElement>('input[type="password"]');798    for (const el of pwInputs) {799      if (isVisible(el) && !processedInputs.has(el)) {800        const cleanup = injectFieldIcon(el, () => {801          currentDismiss?.();802          currentDismiss = null;803          lastDismissedField = null;804          dismissLock = false;805          if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }806          clearFillStateForExplicitSummon(el);807          el.focus({ preventScroll: true });808          void handleFieldInteraction(el, true);809        });810        processedInputs.set(el, cleanup);811      }812    }813  }814}815816// ── TOTP-only fields ───────────────────────────────────────────────────────817// After a username/password submission, many sites swap the whole form for a818// lone "verification code" input. The credential selector intentionally gates819// on login/signup forms, so TOTP fields need a narrow path of their own.820const processedTOTPInputs = new WeakMap<HTMLInputElement, () => void>();821822function hasLoginOrSignupForm(): boolean {823  const fields = detectLoginFields();824  return isAnyCredentialForm(fields);825}826827function injectTOTPFieldIcon(field: HTMLInputElement): void {828  if (processedTOTPInputs.has(field)) return;829  const cleanup = injectFieldIcon(field, () => {830    currentDismiss?.();831    currentDismiss = null;832    currentAnchorField = null;833    lastDismissedField = null;834    dismissLock = false;835    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }836    clearFillStateForExplicitSummon(field);837    field.focus({ preventScroll: true });838    void openTOTPSelector(field);839  });840  processedTOTPInputs.set(field, cleanup);841}842843function scanTOTPFields(): void {844  if (hasLoginOrSignupForm()) return;845  const inputs = document.querySelectorAll<HTMLInputElement>("input");846  for (const input of inputs) {847    if (!isTOTPField(input)) continue;848    injectTOTPFieldIcon(input);849  }850}851852function setupTOTPAutofill(): void {853  setTimeout(scanTOTPFields, 0);854  setTimeout(scanTOTPFields, 500);855  setTimeout(scanTOTPFields, 1500);856857  const debouncedScan = debounce(scanTOTPFields, 200);858  new MutationObserver(debouncedScan).observe(document.body, {859    childList: true,860    subtree: true,861    attributes: true,862    attributeFilter: ["autocomplete", "name", "id", "placeholder", "hidden"],863  });864865  document.addEventListener("focusin", (e) => {866    const target = e.target;867    if (!(target instanceof HTMLInputElement)) return;868    if (hasLoginOrSignupForm()) return;869    if (!isTOTPField(target)) return;870    injectTOTPFieldIcon(target);871  }, true);872}873874document.addEventListener("focusin", onFocusIn);875876setupMutationObserver();877setupTOTPAutofill();878setupSaveDetection();879setupCardAutofill();880881// SPA navigation reset: the content script does not reload across in-app882// route changes (history.pushState, hash navigation, framework routers).883// When the URL changes we clear the page-level fill timestamp so the next884// page works normally; filledForms (a WeakSet) self-empties as old form885// elements leave the DOM. subtree:false because route swaps reliably886// mutate document.body's direct children — subtree:true would fire on887// every internal DOM update and cost us a re-check per mutation.888let lastObservedUrl = location.href;889new MutationObserver(() => {890  if (location.href !== lastObservedUrl) {891    lastObservedUrl = location.href;892    pageFilledAt = null;893  }894}).observe(document.body, { childList: true, subtree: false });895896// Async init: check recall map before running the initial scans so we can897// apply the right aggression level for domains the user has needed before.898(async () => {899  let aggressionLevel = 0;900  try {901    const resp = await chrome.runtime.sendMessage({ type: "GET_SETTINGS" });902    const s = (resp as { ok: boolean; data?: { manualSummonDomains?: Record<string, { summonCount: number }> } }).data;903    const domain = getPageDomain();904    const record = domain ? s?.manualSummonDomains?.[domain] : undefined;905    aggressionLevel = !record ? 0 : record.summonCount >= 2 ? 2 : 1;906  } catch { /* SW may be starting up; proceed with normal scan */ }907908  setTimeout(() => initialScan(aggressionLevel, false), 0);909  setTimeout(() => initialScan(aggressionLevel, false), 500);910  setTimeout(() => initialScan(aggressionLevel, true), 1500);911})();912913// ── Card autofill (State 7) ─────────────────────────────────────────914// Card forms get a parallel injection path. The login icon-injection gate915// in reattachListeners deliberately skips non-text fields, so we wire916// cards independently rather than retrofit AUTOFILL_FIELD_TYPES — keeping917// card detection contained makes the boundary easy to follow.918const processedCardInputs = new WeakMap<HTMLInputElement, () => void>();919let currentCardDismiss: (() => void) | null = null;920let currentCardAnchor: HTMLInputElement | null = null;921let lastDismissedCardField: HTMLInputElement | null = null;922923async function fetchSavedCards(): Promise<CardSelectorEntry[]> {924  const resp = await chrome.runtime.sendMessage({925    type: "AUTOFILL_QUERY",926    payload: { domain: getPageDomain(), kind: "card" },927  }).catch(() => null);928  const r = resp as { ok: boolean; data?: CardSelectorEntry[] } | null;929  return r?.ok ? (r.data ?? []) : [];930}931932async function openCardSelector(anchor: HTMLInputElement): Promise<void> {933  if (!canOpen()) return;934  if (currentCardDismiss && currentCardAnchor === anchor) return;935  if (anchor === lastDismissedCardField) return;936  if (anchor !== lastDismissedCardField) lastDismissedCardField = null;937  if (wasAlreadyFilled(anchor)) return;938939  const cards = await fetchSavedCards();940  if (cards.length === 0) return; // no saved cards → nothing to offer941942  const cardForm = detectCardForm();943  if (!cardForm?.number) return;944945  currentCardDismiss?.();946  currentCardAnchor = anchor;947  currentCardDismiss = showCardSelector(948    anchor,949    cards,950    {951      domain: getPageDomain(),952      onFill: (entry) => {953        if (!cardForm) return;954        fillCardForm(cardForm, {955          cardNumber: entry.cardNumber ?? "",956          expMonth: entry.expMonth ?? "",957          expYear: entry.expYear ?? "",958          cvc: entry.cvc ?? "",959          cardholderName: entry.cardholderName ?? "",960        });961        // All four card field types share the same form — recording the962        // number field's form is sufficient to suppress reopens on any of963        // them via wasAlreadyFilled().964        recordFillSuccess(cardForm.number, cardForm.cvc, cardForm.expiryCombo, cardForm.name);965        currentCardDismiss = null;966        currentCardAnchor = null;967      },968      onDismiss: () => {969        lastDismissedCardField = anchor;970        startDismissLock();971        currentCardDismiss = null;972        currentCardAnchor = null;973      },974    }975  );976}977978function injectCardIcon(field: HTMLInputElement): void {979  if (processedCardInputs.has(field)) return;980  const cleanup = injectFieldIcon(field, () => {981    currentCardDismiss?.();982    currentCardDismiss = null;983    lastDismissedCardField = null;984    dismissLock = false;985    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }986    clearFillStateForExplicitSummon(field);987    field.focus({ preventScroll: true });988    void openCardSelector(field);989  });990  processedCardInputs.set(field, cleanup);991}992993function setupCardAutofill(): void {994  function scan() {995    const cardForm = detectCardForm();996    if (!cardForm?.number) return;997    if (!isVisible(cardForm.number)) return;998    injectCardIcon(cardForm.number);999  }10001001  // Initial detection sweep — same retry cadence as login fields so1002  // late-hydrating SPA checkout pages get caught.1003  setTimeout(scan, 0);1004  setTimeout(scan, 500);1005  setTimeout(scan, 1500);10061007  // Re-scan on DOM mutation (separate from the login MutationObserver1008  // because card forms typically appear on a single navigation event,1009  // not field-by-field — coarser observation is sufficient here).1010  let pending = false;1011  new MutationObserver(() => {1012    if (pending) return;1013    pending = true;1014    setTimeout(() => { pending = false; scan(); }, 200);1015  }).observe(document.body, { childList: true, subtree: true });10161017  // Field-focus path: on focus of a cc-number input, ensure icon is1018  // present and consider opening the selector when the user explicitly1019  // clicks into the card number field.1020  document.addEventListener("focusin", (e) => {1021    const target = e.target;1022    if (!(target instanceof HTMLInputElement)) return;1023    const cardForm = detectCardForm();1024    if (cardForm?.number === target) {1025      injectCardIcon(target);1026    }1027  }, true);1028}10291030chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {1031  // Ignore anything not originating from our own background/service worker.1032  if (sender.id !== chrome.runtime.id) return;1033  if (msg?.type === "GET_SITE_PASSWORD_POLICY") {1034    const policy = detectPasswordPolicy();1035    sendResponse({ ok: true, data: policy });1036    return true;1037  }1038  if (msg?.type === "PING") {1039    sendResponse({ ok: true });1040    return true;1041  }1042  if (msg?.type === "SUMMON_AUTOFILL") {1043    const source = (msg as { type: string; source?: string }).source;1044    const isShortcut = source === "shortcut";1045    const isPasskeyUnlock = source === "passkey-unlock";10461047    const activeInput = getDeepActiveInput();1048    const fields = detectLoginFields();1049    const hasForm = isAnyCredentialForm(fields);10501051    if (hasForm) {1052      // Prefer the currently focused field if it's a login field, otherwise1053      // fall back to the first password field, then username/email.1054      const inForm = activeInput && fields.some(f => f.el === activeInput);1055      const target = inForm1056        ? activeInput1057        : (fields.find(f => f.type === "password")?.el1058            ?? fields.find(f => f.type === "username" || f.type === "email")?.el);1059      if (target) {1060        // Explicit user summon (shortcut or extension button) — bypass all1061        // suppression layers. The user is asking for the popup right now.1062        clearFillStateForExplicitSummon(target);1063        dismissLock = false;1064        if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1065        lastDismissedField = null;1066        void handleFieldInteraction(target);1067      }1068    } else if (isPasskeyUnlock) {1069      // Vault is locked during a passkey GET request. Show the inline unlock1070      // prompt anchored to whatever element is focused on the page (typically1071      // the passkey/sign-in button the user just tapped).1072      const anchor = (document.activeElement instanceof HTMLElement && document.activeElement !== document.body)1073        ? document.activeElement as unknown as HTMLInputElement1074        : null;1075      if (anchor) {1076        currentDismiss?.();1077        currentAnchorField = null;1078        passkeySummonActive = true;1079        currentDismiss = showAutofillSelector(anchor, [], () => {}, {1080          domain: getPageDomain(),1081          locked: true,1082          onDismiss: () => { passkeySummonActive = false; },1083        });1084      }1085    } else if (isShortcut) {1086      // Shortcut on a page with no login form — show clipboard-copy search mode.1087      showSearchPalette();1088    }10891090    // Record this domain for the recall system when triggered via shortcut.1091    if (isShortcut) {1092      const domain = getPageDomain();1093      if (domain) {1094        chrome.runtime.sendMessage({ type: "RECORD_MANUAL_SUMMON", payload: { domain } }).catch(() => {});1095      }1096    }10971098    sendResponse({ ok: hasForm || isShortcut || isPasskeyUnlock });1099    return true;1100  }1101  if (msg?.type === "PASSKEY_PRO_GATE") {1102    // Background rejected a passkey request for a free user. Show State 111103    // so they know what happened and can choose to upgrade.1104    showPasskeyProGate();1105    sendResponse({ ok: true });1106    return true;1107  }1108  if (msg?.type === "SHOW_PASSKEY_TOAST") {1109    // Block autofill selector for the lifetime of the toast and dismiss anything open.1110    passkeyToastActive = true;1111    if (currentDismiss) {1112      currentDismiss();1113      currentDismiss = null;1114      currentAnchorField = null;1115    }1116    return false; // inject.tsx owns the toast and calls sendResponse1117  }1118  if (msg?.type === "DISMISS_PASSKEY_TOAST") {1119    passkeyToastActive = false;1120    return false; // inject.tsx handles the actual dismissal1121  }1122  if (msg?.type === "VAULT_UNLOCKED") {1123    if (passkeySummonActive) {1124      // This unlock was for a pending passkey GET request. Just dismiss the1125      // inline popup — the passkey approval toast takes over from here.1126      passkeySummonActive = false;1127      if (currentDismiss) {1128        currentDismiss();1129        currentDismiss = null;1130        currentAnchorField = null;1131      }1132      sendResponse({ ok: true });1133      return true;1134    }1135    // Normal autofill path: close the locked-state prompt and re-open with1136    // fresh entry data at the same anchor field.1137    const savedField = currentAnchorField;1138    if (currentDismiss) {1139      currentDismiss();1140      currentDismiss = null;1141      currentAnchorField = null;1142    }1143    void handleFieldInteraction(savedField ?? undefined);1144    sendResponse({ ok: true });1145    return true;1146  }1147  return true;1148});11491150// inject.tsx posts this when the passkey toast closes (approve, deny, or timeout)1151// so we know it's safe to allow autofill again.1152window.addEventListener("message", (e: MessageEvent) => {1153  // Reject postMessages from cross-frame senders — only the same window's1154  // injected toast may flip this flag.1155  if (e.source !== window) return;1156  const d = e.data as { source?: string; type?: string } | undefined;1157  if (d?.source === "peach-passkey-toast" && d?.type === "toast-closed") {1158    passkeyToastActive = false;1159  }1160});11611162// ── Firefox passkey detection bridge (legacy observer path) ─────────────1163//1164// Pre-v2.12.0 the MAIN-world `passkeys-firefox.ts` was an observer — it1165// emitted `peach-passkey-firefox` postMessages so this content script could1166// surface State 12 (an inline "Save passkey to Peach" offer). v2.12.01167// replaced the observer with a full interception proxy (the page never1168// reaches a real navigator.credentials.create on Firefox anymore), and the1169// approval UI is opened by the background as part of the ceremony itself.1170// When the proxy is active the offer would be redundant noise, so the1171// listener gates on the flag. Once the proxy is removed (Firefox ships1172// webAuthenticationProxy) this whole block goes too.1173if (!FIREFOX_USE_CONTENT_SCRIPT_PROXY) {1174  let lastPasskeyOfferAt = 0;1175  const PASSKEY_OFFER_COOLDOWN_MS = 30_000;11761177  window.addEventListener("message", (event: MessageEvent) => {1178    if (event.source !== window) return;1179    const data = event.data as { source?: string; type?: string; rpId?: string; rpName?: string; userName?: string; userDisplayName?: string } | undefined;1180    if (!data || data.source !== "peach-passkey-firefox") return;1181    if (detectBrowser() !== "firefox") return;1182    if (data.type !== "create") return;11831184    // Cooldown: a single page interaction can fire multiple credentials.create1185    // calls. Show the offer at most once per 30 seconds per page session.1186    const now = Date.now();1187    if (now - lastPasskeyOfferAt < PASSKEY_OFFER_COOLDOWN_MS) return;1188    lastPasskeyOfferAt = now;11891190    const domain = location.hostname.replace(/^www\./, "");1191    chrome.runtime.sendMessage({1192      type: "GET_PASSKEY_OFFER_DECLINED",1193      payload: { domain },1194    }).then((res: { ok: boolean; data?: boolean } | undefined) => {1195      if (res?.data === true) return;1196      const rpId = data.rpId ?? domain;1197      showPasskeyRegistrationOffer({1198        rpId,1199        rpName: data.rpName,1200        userName: data.userName,1201        userDisplayName: data.userDisplayName,1202      });1203    }).catch(() => {});1204  });1205}12061207// Surface State 11 (passkey-available) only when it adds value:1208//   - Cross-browser entry: Chrome passkey on Firefox or vice versa — neither1209//     browser will auto-route, so the banner explains the re-register need.1210//   - Firefox + same-browser entry: Firefox has no equivalent of1211//     webAuthenticationProxy, so without a banner the user has no signal that1212//     Peach is the source.1213// On Chrome with a same-browser entry: skip — webAuthenticationProxy handles1214// the page's own credentials.get transparently and the popup approval view1215// already surfaces it. A banner here would just be noise.1216//1217// Dedupe across navigation: each navigation re-injects this content script.1218// chrome.storage.session keyed by domain is the natural per-tab/per-session1219// memory; session storage clears when the user closes the browser.1220{1221  function checkPasskeyAvailability() {1222    const domain = location.hostname.replace(/^www\./, "");1223    if (!domain) return;1224    const sessionKey = `peach_state11_shown:${domain}`;1225    chrome.storage.session?.get(sessionKey).then((stored) => {1226      if (stored && (stored as Record<string, unknown>)[sessionKey]) return;1227      chrome.runtime.sendMessage({1228        type: "GET_PASSKEY_FOR_DOMAIN",1229        payload: { domain },1230      }).then((res: { ok: boolean; data?: { rpId: string; userName: string; browser?: "chrome" | "firefox" } | null } | undefined) => {1231        const data = res?.data;1232        if (!data) return;1233        const current = detectBrowser();1234        const isCrossBrowser =1235          data.browser && current !== "unknown" && data.browser !== current;1236        const valuableOnFirefox = current === "firefox";1237        if (!isCrossBrowser && !valuableOnFirefox) return;1238        chrome.storage.session?.set({ [sessionKey]: Date.now() }).catch(() => {});1239        showPasskeyAvailable({1240          rpId: data.rpId,1241          userName: data.userName,1242          fromBrowser: data.browser,1243          currentBrowser: current,1244        });1245      }).catch(() => {});1246    }).catch(() => {});1247  }12481249  // Defer until DOM is interactive — content_scripts run at document_idle but1250  // some pages still mutate visibly afterwards. A short delay also avoids1251  // surfacing the State 11 toast while the user is in the middle of typing.1252  if (document.readyState === "loading") {1253    document.addEventListener("DOMContentLoaded", () => setTimeout(checkPasskeyAvailability, 800));1254  } else {1255    setTimeout(checkPasskeyAvailability, 800);1256  }1257}