index.ts

1import {2  detectCardForm,3  detectLoginFields,4  getDeepActiveInput,5  getPageDomain,6  isLoginForm,7  isSignupForm,8  isTOTPField,9  isVisible,10} from "./detect";11import {12  CardSelectorEntry,13  injectFieldIcon,14  SelectorEntry,15  showAutofillSelector,16  showCardSelector,17  showPasskeyAvailable,18  showPasskeyProGate,19  showPasskeyRegistrationOffer,20  showRememberSiteToast,21  showTOTPSelector,22} from "./inject";23import { detectBrowser } from "../shared/browser";24import { FIREFOX_USE_CONTENT_SCRIPT_PROXY } from "../shared/passkey-flags";25import { fillCardForm, fillFields, setNativeValue } from "./fill";26import { setupSaveDetection } from "./save";27import { contentMLDetector } from "./content-ml-detector";28import { detectPasswordPolicy } from "./policy";29import type { FieldPrediction } from "../shared/ml";30import { generateTOTP } from "../crypto/totp";31import type { SavedIdentity, VaultEntry } from "../shared/types";3233// WeakMap (not WeakSet) — we keep the per-input cleanup callback as the value34// so we can tear down listeners if we ever need to re-process the same field.35// When the input is GC'd (SPA nav, React re-render), the map entry goes with36// it and we can re-inject without leaking the old handler.37const processedInputs = new WeakMap<HTMLInputElement, () => void>();38const AUTOFILL_FIELD_TYPES = new Set(["password", "username", "email"]);3940let currentDismiss: (() => void) | null = null;41// Field whose selector is currently open — used to avoid dismiss+reopen flicker42let currentAnchorField: HTMLInputElement | null = null;43// Prevents two concurrent handleFieldInteraction calls for the same field44const pendingInteractions = new WeakSet<HTMLInputElement>();45// Tracks the last field the user explicitly dismissed (Escape / click-outside / Tab).46// Suppresses spurious reopens until focus moves to a different field. Layer 147// of the dismissal model — see Projects.md §4.12.48let lastDismissedField: HTMLInputElement | null = null;4950// ── Dismissal lock (Layer 2) ────────────────────────────────────────51// After any user-initiated dismiss, briefly block ALL reopens regardless of52// which field is focused. Catches the case where a page rapidly moves focus53// between fields after Escape — without this, focus moving to a SECOND field54// in <100ms would re-trigger the popup before the user finished dismissing.55const DISMISS_LOCK_MS = 800;56let dismissLock = false;57let dismissLockTimer: ReturnType<typeof setTimeout> | null = null;58// Set when the inline popup was summoned specifically for a passkey-unlock59// flow. The VAULT_UNLOCKED handler checks this to skip re-triggering autofill60// (the passkey toast handles the next step instead).61let passkeySummonActive = false;62// Set while the passkey approval toast is visible. Prevents handleFieldInteraction63// from opening the autofill selector alongside it. Cleared by a window message64// posted by inject.tsx when the toast closes (and by DISMISS_PASSKEY_TOAST).65let passkeyToastActive = false;66function startDismissLock(): void {67  dismissLock = true;68  if (dismissLockTimer) clearTimeout(dismissLockTimer);69  dismissLockTimer = setTimeout(() => { dismissLock = false; }, DISMISS_LOCK_MS);70}71function canOpen(): boolean { return !dismissLock; }7273// ── Fill-success lock ───────────────────────────────────────────────74// After Peach autofills a form, the popup must NOT reappear on the filled75// fields, on the submit button (some sites refocus it briefly), or on any76// field in that form — even when host-page DOM mutations or the form's own77// validation flow refocus an input. Implemented as a WeakSet of forms plus78// a page-level timestamp:79//   - filledForms: every form Peach has filled this page session. Survives80//     until the form leaves the DOM (WeakSet GC).81//   - pageFilledAt: timestamp of last fill. Used as a 3s belt-and-suspenders82//     window for fields that aren't inside a <form> element (some SPAs).83// SPA navigation resets pageFilledAt via the urlObserver below; filledForms84// self-empties as old form elements get GC'd.85const filledForms = new WeakSet<HTMLFormElement>();86let pageFilledAt: number | null = null;87const PAGE_FILL_GRACE_MS = 3000;8889function recordFillSuccess(...fields: (HTMLInputElement | null | undefined)[]): void {90  for (const f of fields) {91    if (!f) continue;92    const form = f.closest("form");93    if (form) filledForms.add(form);94  }95  pageFilledAt = Date.now();96}9798function wasAlreadyFilled(field: HTMLInputElement): boolean {99  const form = field.closest("form");100  if (form && filledForms.has(form)) return true;101  if (pageFilledAt !== null && Date.now() - pageFilledAt < PAGE_FILL_GRACE_MS) return true;102  return false;103}104105function clearFillStateForExplicitSummon(field: HTMLInputElement): void {106  const form = field.closest("form");107  if (form) filledForms.delete(form);108  pageFilledAt = null;109}110111// Some sites briefly focus the submit button when the user clicks it (visual112// feedback, blur/focus dance for validation animations). Catch those at the113// focusin layer so we don't re-trigger handleFieldInteraction for an event114// target that was never going to be a credential field anyway.115function isSubmitButton(el: EventTarget | null): boolean {116  if (!(el instanceof HTMLElement)) return false;117  if (el instanceof HTMLButtonElement && el.type !== "button") return true;118  if (el instanceof HTMLInputElement && el.type === "submit") return true;119  if (el.getAttribute("type") === "submit") return true;120  const text = (el.textContent?.trim() ?? el.getAttribute("value") ?? "").toLowerCase();121  if (!text || text.length > 24) return false;122  return /^(submit|sign[ -]?in|log[ -]?in|continue|next|go)$/i.test(text);123}124125function debounce<T extends (...args: unknown[]) => void>(126  fn: T,127  ms: number128): (...args: Parameters<T>) => void {129  let timer: ReturnType<typeof setTimeout>;130  return (...args: Parameters<T>) => {131    clearTimeout(timer);132    timer = setTimeout(() => fn(...args), ms);133  };134}135136function showToast(message: string): void {137  const toast = document.createElement("div");138  toast.style.cssText = `139    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);140    background: #131109; color: #F0E8D8; padding: 8px 16px;141    border-radius: 8px; font-family: 'IBM Plex Mono', monospace;142    font-size: 11px; z-index: 2147483647; opacity: 0;143    transition: opacity 200ms ease;144    border: 1px solid rgba(240,232,216,0.07);145    pointer-events: none;146  `;147  toast.textContent = message;148  document.body.appendChild(toast);149  requestAnimationFrame(() => { toast.style.opacity = "1"; });150  setTimeout(() => {151    toast.style.opacity = "0";152    setTimeout(() => toast.remove(), 200);153  }, 2000);154}155156function showSearchPalette(): void {157  const host = document.createElement("div");158  host.style.cssText = "position:fixed;top:80px;left:50%;transform:translateX(-50%);z-index:2147483647;width:340px;";159  document.body.appendChild(host);160  const shadow = host.attachShadow({ mode: "closed" });161162  const style = document.createElement("style");163  style.textContent = `164    .p{background:#131109;border:1px solid rgba(240,232,216,.12);border-radius:12px;165      font-family:'IBM Plex Mono',monospace;font-size:12px;color:#F0E8D8;166      box-shadow:0 8px 24px rgba(0,0,0,.5);overflow:hidden}167    .h{padding:10px 12px 8px;border-bottom:1px solid rgba(240,232,216,.08);168      font-size:11px;color:rgba(240,232,216,.5);display:flex;justify-content:space-between;align-items:center}169    .x{background:none;border:none;color:rgba(240,232,216,.4);cursor:pointer;font-size:14px;padding:0;line-height:1}170    .s{padding:8px 12px}171    .s input{width:100%;box-sizing:border-box;background:rgba(240,232,216,.06);172      border:1px solid rgba(240,232,216,.12);border-radius:6px;color:#F0E8D8;173      padding:6px 8px;font-family:inherit;font-size:12px;outline:none}174    .l{max-height:220px;overflow-y:auto}175    .e{padding:8px 12px;cursor:pointer;display:flex;flex-direction:column;gap:2px}176    .e:hover{background:rgba(240,232,216,.06)}177    .et{font-size:12px}178    .eu{font-size:10px;color:rgba(240,232,216,.45)}179    .em{padding:12px;color:rgba(240,232,216,.4);text-align:center}180  `;181182  let allEntries: SelectorEntry[] = [];183  let query = "";184185  const panel = document.createElement("div");186  panel.className = "p";187188  const hdr = document.createElement("div");189  hdr.className = "h";190  const hdrText = document.createElement("span");191  hdrText.textContent = "No form detected — search your vault";192  const closeBtn = document.createElement("button");193  closeBtn.className = "x";194  closeBtn.textContent = "✕";195  hdr.appendChild(hdrText);196  hdr.appendChild(closeBtn);197198  const searchWrap = document.createElement("div");199  searchWrap.className = "s";200  const searchInput = document.createElement("input");201  searchInput.placeholder = "search...";202  searchWrap.appendChild(searchInput);203204  const list = document.createElement("div");205  list.className = "l";206207  panel.appendChild(hdr);208  panel.appendChild(searchWrap);209  panel.appendChild(list);210  shadow.appendChild(style);211  shadow.appendChild(panel);212213  function close() { host.remove(); }214215  closeBtn.onclick = close;216217  function onKeyDown(e: KeyboardEvent) {218    if (e.key === "Escape") { close(); document.removeEventListener("keydown", onKeyDown, true); }219  }220  document.addEventListener("keydown", onKeyDown, true);221222  function render() {223    const q = query.toLowerCase();224    const filtered = q225      ? allEntries.filter(e => e.title.toLowerCase().includes(q) || (e.username ?? "").toLowerCase().includes(q))226      : allEntries;227    list.innerHTML = "";228    if (filtered.length === 0) {229      const em = document.createElement("div");230      em.className = "em";231      em.textContent = query ? "no matches" : "vault is empty";232      list.appendChild(em);233      return;234    }235    for (const entry of filtered.slice(0, 20)) {236      const row = document.createElement("div");237      row.className = "e";238      const title = document.createElement("div");239      title.className = "et";240      title.textContent = entry.title;241      row.appendChild(title);242      if (entry.username) {243        const user = document.createElement("div");244        user.className = "eu";245        user.textContent = entry.username;246        row.appendChild(user);247      }248      row.onclick = async () => {249        const resp = await chrome.runtime.sendMessage({ type: "GET_ENTRY_FOR_FILL", payload: { id: entry.id } });250        const r = resp as { ok: boolean; data?: { password?: string } };251        if (r.ok && r.data?.password) {252          let alreadyWritten = false;253          try {254            await navigator.clipboard.writeText(r.data.password);255            alreadyWritten = true;256          } catch (err) {257            console.warn("[Peach] clipboard write denied:", err);258          }259          const copyResp = await chrome.runtime.sendMessage({260            type: "COPY",261            payload: { text: r.data.password, label: "Password", alreadyWritten },262          }) as { ok?: boolean } | undefined;263          if (alreadyWritten || copyResp?.ok) {264            showToast("Password copied");265          } else {266            showToast("Could not copy password — clipboard blocked");267          }268        } else {269          showToast("Could not copy password");270        }271        close();272        document.removeEventListener("keydown", onKeyDown, true);273      };274      list.appendChild(row);275    }276  }277278  searchInput.oninput = () => { query = searchInput.value; render(); };279280  fetchAutofillEntries(getPageDomain(), true).then(result => {281    if (result.locked) { showToast("Vault is locked — open Peach to unlock"); close(); return; }282    allEntries = result.entries;283    render();284    searchInput.focus();285  });286}287288function findTOTPField(): HTMLInputElement | null {289  const inputs = document.querySelectorAll<HTMLInputElement>("input");290  for (const input of inputs) {291    if (isTOTPField(input)) return input;292  }293  return null;294}295296async function autofillTOTP(totpField: HTMLInputElement, totpSecret: string): Promise<void> {297  await new Promise((r) => setTimeout(r, 400));298  if (totpField.value === "" || totpField.value.trim() === "") {299    const { code } = generateTOTP(totpSecret);300    setNativeValue(totpField, code);301    showToast("TOTP autofilled");302  }303}304305306async function handleAutofill(307  _field: HTMLInputElement,308  usernameEl: HTMLInputElement | null,309  passwordEl: HTMLInputElement,310  entry: VaultEntry311): Promise<void> {312  if (!entry.username && !entry.password) return;313  const pageDomain = getPageDomain();314  const form = passwordEl.closest("form") as HTMLFormElement | null;315  fillFields(usernameEl, passwordEl, entry.username ?? "", entry.password ?? "", form, pageDomain);316317  if (entry.canary) {318    chrome.runtime.sendMessage({319      type: "FIRE_CANARY_PING",320      payload: {321        webhookUrl: entry.canary.webhookUrl,322        entryTitle: entry.title,323        trigger: "autofilled",324      },325    }).catch(() => {});326    chrome.runtime.sendMessage({327      type: "UPDATE_ENTRY",328      payload: {329        id: entry.id,330        patch: {331          canary: {332            ...entry.canary,333            lastPinged: Date.now(),334            pingCount: (entry.canary.pingCount ?? 0) + 1,335          },336        },337      },338    }).catch(() => {});339  }340341  if (entry.totp) {342    const { code } = generateTOTP(entry.totp);343    let alreadyWritten = false;344    try {345      await navigator.clipboard.writeText(code);346      alreadyWritten = true;347    } catch (err) {348      console.warn("[Peach] clipboard write denied:", err);349    }350    const response = await chrome.runtime.sendMessage({351      type: "COPY",352      payload: { text: code, label: "TOTP", alreadyWritten },353    });354    if (alreadyWritten || (response as { ok?: boolean }).ok) {355      showToast("TOTP copied · " + code);356    } else {357      showToast("Could not copy TOTP — clipboard blocked");358    }359    const totpField = findTOTPField();360    if (totpField) {361      autofillTOTP(totpField, entry.totp);362    }363  }364}365366async function fetchAutofillEntries(367  domain: string,368  includeAll = false369): Promise<{ entries: SelectorEntry[]; locked: boolean }> {370  const response = await chrome.runtime.sendMessage({371    type: "AUTOFILL_QUERY",372    payload: { domain, includeAll },373  });374  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };375  if (!res.ok && res.error === "vault_locked") {376    return { entries: [], locked: true };377  }378  return { entries: res.data ?? [], locked: false };379}380381async function fetchTOTPEntries(382  domain: string383): Promise<{ entries: SelectorEntry[]; locked: boolean }> {384  const response = await chrome.runtime.sendMessage({385    type: "AUTOFILL_QUERY",386    payload: { domain, kind: "totp" },387  });388  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };389  if (!res.ok && res.error === "vault_locked") {390    return { entries: [], locked: true };391  }392  return { entries: res.data ?? [], locked: false };393}394395396function resolveAutofillFieldType(397  el: HTMLInputElement,398  predictedType?: FieldPrediction["type"] | null399): "password" | "username" | "email" | null {400  if (401    predictedType === "password" ||402    predictedType === "username" ||403    predictedType === "email"404  ) {405    return predictedType;406  }407408  const detected = detectLoginFields().find((field) => field.el === el)?.type;409  if (detected && AUTOFILL_FIELD_TYPES.has(detected)) {410    return detected;411  }412413  const htmlType = el.type.toLowerCase();414  if (htmlType === "password") return "password";415  if (htmlType === "email") return "email";416  return null;417}418419async function openAutofillSelector(420  anchorField: HTMLInputElement,421  usernameEl: HTMLInputElement | null,422  passwordEl: HTMLInputElement,423  domainEntries: SelectorEntry[],424  searchableEntries: SelectorEntry[],425  domain: string426): Promise<void> {427  // No saved entries for this site → signup/new-account mode.428  // Fetch vault identities for the identity-first surface and locate429  // the confirm-password field so "Copy & fill" can populate it too.430  const isSignup = domainEntries.length === 0;431  let savedIdentities: SavedIdentity[] | undefined;432  let confirmEl: HTMLInputElement | null = null;433  if (isSignup) {434    try {435      const idResp = await chrome.runtime.sendMessage({ type: "GET_IDENTITIES" }).catch(() => null) as436        { ok: boolean; data?: SavedIdentity[] } | null;437      if (idResp?.ok && Array.isArray(idResp.data)) savedIdentities = idResp.data;438    } catch { /* silent fallback */ }439440    const form = passwordEl.closest("form") ?? document.body;441    const allPwInputs = Array.from(form.querySelectorAll<HTMLInputElement>("input[type='password']"));442    confirmEl = allPwInputs.find(443      (el) => el !== passwordEl && /confirm|repeat|verify/i.test(el.name + el.id + el.placeholder)444    ) ?? (allPwInputs.length >= 2 ? allPwInputs.find((el) => el !== passwordEl) ?? null : null);445  }446447  currentDismiss?.();448  currentAnchorField = anchorField;449  currentDismiss = showAutofillSelector(450    anchorField,451    domainEntries,452    async (id: string) => {453      currentDismiss = null;454      currentAnchorField = null;455      const entryResponse = await chrome.runtime.sendMessage({456        type: "GET_ENTRY_FOR_FILL",457        payload: { id },458      });459      const entry = (entryResponse as { ok: boolean; data?: VaultEntry }).data;460      if (entry) {461        await handleAutofill(anchorField, usernameEl, passwordEl, entry);462        recordFillSuccess(anchorField, usernameEl, passwordEl);463        // Offer to remember the current site for this entry only if none of464        // its known domains (primary + additional) match — otherwise the465        // user already mapped it and the prompt would be noise.466        const pageDomain = location.hostname.replace(/^www\./, "");467        const entryDomains = new Set<string>();468        for (const u of [entry.url, ...(entry.additionalUrls ?? [])]) {469          try {470            if (u) entryDomains.add(new URL(u).hostname.replace(/^www\./, ""));471          } catch { /* ignore unparseable */ }472        }473        if (pageDomain && entryDomains.size > 0 && !entryDomains.has(pageDomain)) {474          showRememberSiteToast(pageDomain, entry.id);475        }476      }477    },478    {479      domain,480      searchableEntries,481      isSignup,482      savedIdentities,483      onFillFields: (username, password) => {484        const form = passwordEl.closest("form") as HTMLFormElement | null;485        fillFields(usernameEl, passwordEl, username, password, form, getPageDomain());486        if (password && confirmEl) setNativeValue(confirmEl, password);487        recordFillSuccess(anchorField, usernameEl, passwordEl);488      },489      onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },490    }491  );492}493494async function openTOTPSelector(anchorField: HTMLInputElement): Promise<void> {495  if (!canOpen()) return;496  if (currentDismiss && currentAnchorField === anchorField) return;497  if (anchorField !== lastDismissedField) lastDismissedField = null;498  if (anchorField === lastDismissedField) return;499  if (wasAlreadyFilled(anchorField)) return;500501  const domain = getPageDomain();502  const result = await fetchTOTPEntries(domain);503504  if (result.locked) {505    currentDismiss?.();506    currentAnchorField = anchorField;507    currentDismiss = showAutofillSelector(508      anchorField,509      [],510      () => {},511      {512        domain,513        locked: true,514        onUnlocked: () => void openTOTPSelector(anchorField),515        onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },516      }517    );518    return;519  }520521  if (result.entries.length === 0) return;522523  currentDismiss?.();524  currentAnchorField = anchorField;525  currentDismiss = showTOTPSelector(526    anchorField,527    result.entries,528    async (id: string) => {529      try {530        const entryResponse = await chrome.runtime.sendMessage({531          type: "GET_ENTRY_FOR_FILL",532          payload: { id },533        }).catch(() => null) as { ok: boolean; data?: VaultEntry } | null;534        const entry = entryResponse?.ok ? entryResponse.data : undefined;535        if (!entry?.totp) return;536        const { code } = generateTOTP(entry.totp);537        setNativeValue(anchorField, code);538        recordFillSuccess(anchorField);539        showToast("2FA code filled");540      } finally {541        currentDismiss = null;542        currentAnchorField = null;543      }544    },545    {546      domain,547      onDismiss: () => {548        lastDismissedField = anchorField;549        startDismissLock();550        currentDismiss = null;551        currentAnchorField = null;552      },553    }554  );555}556557558async function handleFieldInteraction(anchorField?: HTMLInputElement | null): Promise<void> {559  const field = anchorField ?? getDeepActiveInput();560  if (!field) return;561  if (!isVisible(field)) return;562563  // Passkey toast is visible — don't open the credential selector alongside it.564  if (passkeyToastActive) return;565566  // Layer 2: post-dismiss global lock. Catches rapid focus moves between567  // fields immediately after Escape/click-outside.568  if (!canOpen()) return;569570  // If a selector is already open for this exact field, don't flicker it.571  if (currentDismiss && currentAnchorField === field) return;572573  // If focus moved to a different field, the previous per-field dismiss lock574  // no longer applies.575  if (field !== lastDismissedField) lastDismissedField = null;576  // Layer 1: the user explicitly dismissed this field's selector — don't577  // reopen it until focus has genuinely moved away and come back.578  if (field === lastDismissedField) return;579580  // Fill-success lock: Peach already filled this form (or fired a fill581  // anywhere on the page within the grace window). Sites often refocus an582  // input on submit click, on validation, or on a transition to a success583  // state — none of those should re-open the popup.584  if (wasAlreadyFilled(field)) return;585586  // Prevent two concurrent calls for the same field (e.g. focusin + icon click587  // firing simultaneously — the second call would dismiss the first's selector).588  if (pendingInteractions.has(field)) return;589  pendingInteractions.add(field);590591  try {592    if (isTOTPField(field)) {593      const formFields = detectLoginFields();594      if (!isLoginForm(formFields) && !isSignupForm(formFields)) {595        await openTOTPSelector(field);596        return;597      }598    }599600    const fieldType = field.type.toLowerCase();601602    const mlPromise = contentMLDetector.predictBatch([field]).then((preds) => {603      return preds[0] ?? null;604    });605606    const mlPrediction = await new Promise<FieldPrediction | null>((resolve) => {607      const timeout = setTimeout(() => resolve(null), 150);608      mlPromise.then((pred) => {609        clearTimeout(timeout);610        resolve(pred);611      });612    });613614    if (passkeyToastActive) return;615616    if (fieldType !== "password" && mlPrediction && mlPrediction.type !== "username" && mlPrediction.type !== "email") {617      return;618    }619620    const autofillFieldType = resolveAutofillFieldType(field, mlPrediction?.type);621    if (autofillFieldType) {622      reattachListeners(field, autofillFieldType);623    }624625    let fields = detectLoginFields();626    const loginForm = isLoginForm(fields);627    const signupForm = isSignupForm(fields);628    if (!loginForm && !signupForm) {629      return;630    }631632    const domain = getPageDomain();633    const firstResult = await fetchAutofillEntries(domain);634    if (passkeyToastActive) return;635636    // Vault is locked — show an inline unlock prompt.637    // Re-triggering after unlock is handled by the VAULT_UNLOCKED message so638    // there is no double-trigger race between onUnlocked and the broadcast.639    if (firstResult.locked) {640      currentDismiss?.();641      currentAnchorField = field;642      currentDismiss = showAutofillSelector(643        field,644        [],645        () => {},646        { domain, locked: true, onDismiss: () => { lastDismissedField = field; startDismissLock(); } }647      );648      return;649    }650651    const entries = firstResult.entries;652    const allEntries = entries.length === 0653      ? (await fetchAutofillEntries(domain, true)).entries654      : entries;655656    if (passkeyToastActive) return;657658    let usernameEl: HTMLInputElement | null = null;659    const userField = fields.find((f) => f.type === "username" || f.type === "email");660    if (userField) usernameEl = userField.el;661    const pwField = fields.find((f) => f.type === "password");662    if (!pwField) return;663    const passwordEl = pwField.el;664665    await openAutofillSelector(field, usernameEl, passwordEl, entries, allEntries, domain);666  } finally {667    pendingInteractions.delete(field);668  }669}670671async function onFocusIn(e: Event): Promise<void> {672  // Submit-button focus: catch the brief refocus some sites do when the673  // user clicks the login/submit button. Without this guard, that focus674  // event reaches handleFieldInteraction → getDeepActiveInput, and on675  // pages where the button is also a labelled <input> we briefly attempt676  // to open the popup over the very button the user just clicked.677  if (isSubmitButton(e.target)) return;678  await handleFieldInteraction();679}680681function reattachListeners(682  el: HTMLInputElement,683  detectedType?: "password" | "username" | "email",684  contextFields?: ReturnType<typeof detectLoginFields>685): void {686  if (processedInputs.has(el)) return;687  if (!resolveAutofillFieldType(el, detectedType)) return;688  // Only inject icon when a real login/signup form is present on the page689  const fields = contextFields ?? detectLoginFields();690  if (!isLoginForm(fields) && !isSignupForm(fields)) return;691692  const cleanup = injectFieldIcon(el, () => {693    currentDismiss?.();694    currentDismiss = null;695    lastDismissedField = null; // icon click is an explicit user open — clear per-field lock696    dismissLock = false; // ...and the global lock697    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }698    clearFillStateForExplicitSummon(el);699    el.focus({ preventScroll: true });700    void handleFieldInteraction(el);701  });702  processedInputs.set(el, cleanup);703}704705const debouncedReattach = debounce(() => {706  const allFields = detectLoginFields();707  // Don't inject anything if there's no real login/signup form on this page708  if (!isLoginForm(allFields) && !isSignupForm(allFields)) return;709  const newFields = allFields.filter(710    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)711  );712  for (const f of newFields) {713    reattachListeners(f.el, f.type, allFields);714  }715  // 200ms debounce — below this, Peach and the host page's reactive layer716  // fight over the same layout properties every frame on React/Vue/Angular717  // login forms (v1.4.14 regression, Projects.md §4.7). Do not lower.718}, 200);719720function setupMutationObserver(): void {721  const observer = new MutationObserver(debouncedReattach);722  observer.observe(document.body, {723    childList: true,724    subtree: true,725    attributes: true,726    attributeFilter: ["type", "autocomplete", "name", "id", "placeholder", "hidden"],727  });728}729730function initialScan(aggressionLevel = 0, isFinalPass = false) {731  const allFields = detectLoginFields();732  const hasKnownForm = isLoginForm(allFields) || isSignupForm(allFields);733734  if (aggressionLevel === 0 && !hasKnownForm) return;735736  const newFields = allFields.filter(737    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)738  );739740  for (const f of newFields) {741    reattachListeners(f.el, f.type, allFields);742  }743744  // Level 2, final pass: inject icon on any visible password field even if745  // the form-context gate in reattachListeners would normally skip it.746  if (aggressionLevel >= 2 && isFinalPass && newFields.length === 0) {747    const pwInputs = document.querySelectorAll<HTMLInputElement>('input[type="password"]');748    for (const el of pwInputs) {749      if (isVisible(el) && !processedInputs.has(el)) {750        const cleanup = injectFieldIcon(el, () => {751          currentDismiss?.();752          currentDismiss = null;753          lastDismissedField = null;754          dismissLock = false;755          if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }756          clearFillStateForExplicitSummon(el);757          el.focus({ preventScroll: true });758          void handleFieldInteraction(el);759        });760        processedInputs.set(el, cleanup);761      }762    }763  }764}765766// ── TOTP-only fields ───────────────────────────────────────────────────────767// After a username/password submission, many sites swap the whole form for a768// lone "verification code" input. The credential selector intentionally gates769// on login/signup forms, so TOTP fields need a narrow path of their own.770const processedTOTPInputs = new WeakMap<HTMLInputElement, () => void>();771772function hasLoginOrSignupForm(): boolean {773  const fields = detectLoginFields();774  return isLoginForm(fields) || isSignupForm(fields);775}776777function injectTOTPFieldIcon(field: HTMLInputElement): void {778  if (processedTOTPInputs.has(field)) return;779  const cleanup = injectFieldIcon(field, () => {780    currentDismiss?.();781    currentDismiss = null;782    currentAnchorField = null;783    lastDismissedField = null;784    dismissLock = false;785    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }786    clearFillStateForExplicitSummon(field);787    field.focus({ preventScroll: true });788    void openTOTPSelector(field);789  });790  processedTOTPInputs.set(field, cleanup);791}792793function scanTOTPFields(): void {794  if (hasLoginOrSignupForm()) return;795  const inputs = document.querySelectorAll<HTMLInputElement>("input");796  for (const input of inputs) {797    if (!isTOTPField(input)) continue;798    injectTOTPFieldIcon(input);799  }800}801802function setupTOTPAutofill(): void {803  setTimeout(scanTOTPFields, 0);804  setTimeout(scanTOTPFields, 500);805  setTimeout(scanTOTPFields, 1500);806807  const debouncedScan = debounce(scanTOTPFields, 200);808  new MutationObserver(debouncedScan).observe(document.body, {809    childList: true,810    subtree: true,811    attributes: true,812    attributeFilter: ["autocomplete", "name", "id", "placeholder", "hidden"],813  });814815  document.addEventListener("focusin", (e) => {816    const target = e.target;817    if (!(target instanceof HTMLInputElement)) return;818    if (hasLoginOrSignupForm()) return;819    if (!isTOTPField(target)) return;820    injectTOTPFieldIcon(target);821  }, true);822}823824document.addEventListener("focusin", onFocusIn);825826setupMutationObserver();827setupTOTPAutofill();828setupSaveDetection();829setupCardAutofill();830831// SPA navigation reset: the content script does not reload across in-app832// route changes (history.pushState, hash navigation, framework routers).833// When the URL changes we clear the page-level fill timestamp so the next834// page works normally; filledForms (a WeakSet) self-empties as old form835// elements leave the DOM. subtree:false because route swaps reliably836// mutate document.body's direct children — subtree:true would fire on837// every internal DOM update and cost us a re-check per mutation.838let lastObservedUrl = location.href;839new MutationObserver(() => {840  if (location.href !== lastObservedUrl) {841    lastObservedUrl = location.href;842    pageFilledAt = null;843  }844}).observe(document.body, { childList: true, subtree: false });845846// Async init: check recall map before running the initial scans so we can847// apply the right aggression level for domains the user has needed before.848(async () => {849  let aggressionLevel = 0;850  try {851    const resp = await chrome.runtime.sendMessage({ type: "GET_SETTINGS" });852    const s = (resp as { ok: boolean; data?: { manualSummonDomains?: Record<string, { summonCount: number }> } }).data;853    const domain = getPageDomain();854    const record = domain ? s?.manualSummonDomains?.[domain] : undefined;855    aggressionLevel = !record ? 0 : record.summonCount >= 2 ? 2 : 1;856  } catch { /* SW may be starting up; proceed with normal scan */ }857858  setTimeout(() => initialScan(aggressionLevel, false), 0);859  setTimeout(() => initialScan(aggressionLevel, false), 500);860  setTimeout(() => initialScan(aggressionLevel, true), 1500);861})();862863// ── Card autofill (State 7) ─────────────────────────────────────────864// Card forms get a parallel injection path. The login icon-injection gate865// in reattachListeners deliberately skips non-text fields, so we wire866// cards independently rather than retrofit AUTOFILL_FIELD_TYPES — keeping867// card detection contained makes the boundary easy to follow.868const processedCardInputs = new WeakMap<HTMLInputElement, () => void>();869let currentCardDismiss: (() => void) | null = null;870let currentCardAnchor: HTMLInputElement | null = null;871let lastDismissedCardField: HTMLInputElement | null = null;872873async function fetchSavedCards(): Promise<CardSelectorEntry[]> {874  const resp = await chrome.runtime.sendMessage({875    type: "AUTOFILL_QUERY",876    payload: { domain: getPageDomain(), kind: "card" },877  }).catch(() => null);878  const r = resp as { ok: boolean; data?: CardSelectorEntry[] } | null;879  return r?.ok ? (r.data ?? []) : [];880}881882async function openCardSelector(anchor: HTMLInputElement): Promise<void> {883  if (!canOpen()) return;884  if (currentCardDismiss && currentCardAnchor === anchor) return;885  if (anchor === lastDismissedCardField) return;886  if (anchor !== lastDismissedCardField) lastDismissedCardField = null;887  if (wasAlreadyFilled(anchor)) return;888889  const cards = await fetchSavedCards();890  if (cards.length === 0) return; // no saved cards → nothing to offer891892  const cardForm = detectCardForm();893  if (!cardForm?.number) return;894895  currentCardDismiss?.();896  currentCardAnchor = anchor;897  currentCardDismiss = showCardSelector(898    anchor,899    cards,900    {901      domain: getPageDomain(),902      onFill: (entry) => {903        if (!cardForm) return;904        fillCardForm(cardForm, {905          cardNumber: entry.cardNumber ?? "",906          expMonth: entry.expMonth ?? "",907          expYear: entry.expYear ?? "",908          cvc: entry.cvc ?? "",909          cardholderName: entry.cardholderName ?? "",910        });911        // All four card field types share the same form — recording the912        // number field's form is sufficient to suppress reopens on any of913        // them via wasAlreadyFilled().914        recordFillSuccess(cardForm.number, cardForm.cvc, cardForm.expiryCombo, cardForm.name);915        currentCardDismiss = null;916        currentCardAnchor = null;917      },918      onDismiss: () => {919        lastDismissedCardField = anchor;920        startDismissLock();921        currentCardDismiss = null;922        currentCardAnchor = null;923      },924    }925  );926}927928function injectCardIcon(field: HTMLInputElement): void {929  if (processedCardInputs.has(field)) return;930  const cleanup = injectFieldIcon(field, () => {931    currentCardDismiss?.();932    currentCardDismiss = null;933    lastDismissedCardField = null;934    dismissLock = false;935    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }936    clearFillStateForExplicitSummon(field);937    field.focus({ preventScroll: true });938    void openCardSelector(field);939  });940  processedCardInputs.set(field, cleanup);941}942943function setupCardAutofill(): void {944  function scan() {945    const cardForm = detectCardForm();946    if (!cardForm?.number) return;947    if (!isVisible(cardForm.number)) return;948    injectCardIcon(cardForm.number);949  }950951  // Initial detection sweep — same retry cadence as login fields so952  // late-hydrating SPA checkout pages get caught.953  setTimeout(scan, 0);954  setTimeout(scan, 500);955  setTimeout(scan, 1500);956957  // Re-scan on DOM mutation (separate from the login MutationObserver958  // because card forms typically appear on a single navigation event,959  // not field-by-field — coarser observation is sufficient here).960  let pending = false;961  new MutationObserver(() => {962    if (pending) return;963    pending = true;964    setTimeout(() => { pending = false; scan(); }, 200);965  }).observe(document.body, { childList: true, subtree: true });966967  // Field-focus path: on focus of a cc-number input, ensure icon is968  // present and consider opening the selector when the user explicitly969  // clicks into the card number field.970  document.addEventListener("focusin", (e) => {971    const target = e.target;972    if (!(target instanceof HTMLInputElement)) return;973    const cardForm = detectCardForm();974    if (cardForm?.number === target) {975      injectCardIcon(target);976    }977  }, true);978}979980chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {981  // Ignore anything not originating from our own background/service worker.982  if (sender.id !== chrome.runtime.id) return;983  if (msg?.type === "GET_SITE_PASSWORD_POLICY") {984    const policy = detectPasswordPolicy();985    sendResponse({ ok: true, data: policy });986    return true;987  }988  if (msg?.type === "PING") {989    sendResponse({ ok: true });990    return true;991  }992  if (msg?.type === "SUMMON_AUTOFILL") {993    const source = (msg as { type: string; source?: string }).source;994    const isShortcut = source === "shortcut";995    const isPasskeyUnlock = source === "passkey-unlock";996997    const activeInput = getDeepActiveInput();998    const fields = detectLoginFields();999    const hasForm = isLoginForm(fields) || isSignupForm(fields);10001001    if (hasForm) {1002      // Prefer the currently focused field if it's a login field, otherwise1003      // fall back to the first password field, then username/email.1004      const inForm = activeInput && fields.some(f => f.el === activeInput);1005      const target = inForm1006        ? activeInput1007        : (fields.find(f => f.type === "password")?.el1008            ?? fields.find(f => f.type === "username" || f.type === "email")?.el);1009      if (target) {1010        // Explicit user summon (shortcut or extension button) — bypass all1011        // suppression layers. The user is asking for the popup right now.1012        clearFillStateForExplicitSummon(target);1013        dismissLock = false;1014        if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1015        lastDismissedField = null;1016        void handleFieldInteraction(target);1017      }1018    } else if (isPasskeyUnlock) {1019      // Vault is locked during a passkey GET request. Show the inline unlock1020      // prompt anchored to whatever element is focused on the page (typically1021      // the passkey/sign-in button the user just tapped).1022      const anchor = (document.activeElement instanceof HTMLElement && document.activeElement !== document.body)1023        ? document.activeElement as unknown as HTMLInputElement1024        : null;1025      if (anchor) {1026        currentDismiss?.();1027        currentAnchorField = null;1028        passkeySummonActive = true;1029        currentDismiss = showAutofillSelector(anchor, [], () => {}, {1030          domain: getPageDomain(),1031          locked: true,1032          onDismiss: () => { passkeySummonActive = false; },1033        });1034      }1035    } else if (isShortcut) {1036      // Shortcut on a page with no login form — show clipboard-copy search mode.1037      showSearchPalette();1038    }10391040    // Record this domain for the recall system when triggered via shortcut.1041    if (isShortcut) {1042      const domain = getPageDomain();1043      if (domain) {1044        chrome.runtime.sendMessage({ type: "RECORD_MANUAL_SUMMON", payload: { domain } }).catch(() => {});1045      }1046    }10471048    sendResponse({ ok: hasForm || isShortcut || isPasskeyUnlock });1049    return true;1050  }1051  if (msg?.type === "PASSKEY_PRO_GATE") {1052    // Background rejected a passkey request for a free user. Show State 111053    // so they know what happened and can choose to upgrade.1054    showPasskeyProGate();1055    sendResponse({ ok: true });1056    return true;1057  }1058  if (msg?.type === "SHOW_PASSKEY_TOAST") {1059    // Block autofill selector for the lifetime of the toast and dismiss anything open.1060    passkeyToastActive = true;1061    if (currentDismiss) {1062      currentDismiss();1063      currentDismiss = null;1064      currentAnchorField = null;1065    }1066    return false; // inject.tsx owns the toast and calls sendResponse1067  }1068  if (msg?.type === "DISMISS_PASSKEY_TOAST") {1069    passkeyToastActive = false;1070    return false; // inject.tsx handles the actual dismissal1071  }1072  if (msg?.type === "VAULT_UNLOCKED") {1073    if (passkeySummonActive) {1074      // This unlock was for a pending passkey GET request. Just dismiss the1075      // inline popup — the passkey approval toast takes over from here.1076      passkeySummonActive = false;1077      if (currentDismiss) {1078        currentDismiss();1079        currentDismiss = null;1080        currentAnchorField = null;1081      }1082      sendResponse({ ok: true });1083      return true;1084    }1085    // Normal autofill path: close the locked-state prompt and re-open with1086    // fresh entry data at the same anchor field.1087    const savedField = currentAnchorField;1088    if (currentDismiss) {1089      currentDismiss();1090      currentDismiss = null;1091      currentAnchorField = null;1092    }1093    void handleFieldInteraction(savedField ?? undefined);1094    sendResponse({ ok: true });1095    return true;1096  }1097  return true;1098});10991100// inject.tsx posts this when the passkey toast closes (approve, deny, or timeout)1101// so we know it's safe to allow autofill again.1102window.addEventListener("message", (e: MessageEvent) => {1103  // Reject postMessages from cross-frame senders — only the same window's1104  // injected toast may flip this flag.1105  if (e.source !== window) return;1106  const d = e.data as { source?: string; type?: string } | undefined;1107  if (d?.source === "peach-passkey-toast" && d?.type === "toast-closed") {1108    passkeyToastActive = false;1109  }1110});11111112// ── Firefox passkey detection bridge (legacy observer path) ─────────────1113//1114// Pre-v2.12.0 the MAIN-world `passkeys-firefox.ts` was an observer — it1115// emitted `peach-passkey-firefox` postMessages so this content script could1116// surface State 12 (an inline "Save passkey to Peach" offer). v2.12.01117// replaced the observer with a full interception proxy (the page never1118// reaches a real navigator.credentials.create on Firefox anymore), and the1119// approval UI is opened by the background as part of the ceremony itself.1120// When the proxy is active the offer would be redundant noise, so the1121// listener gates on the flag. Once the proxy is removed (Firefox ships1122// webAuthenticationProxy) this whole block goes too.1123if (!FIREFOX_USE_CONTENT_SCRIPT_PROXY) {1124  let lastPasskeyOfferAt = 0;1125  const PASSKEY_OFFER_COOLDOWN_MS = 30_000;11261127  window.addEventListener("message", (event: MessageEvent) => {1128    if (event.source !== window) return;1129    const data = event.data as { source?: string; type?: string; rpId?: string; rpName?: string; userName?: string; userDisplayName?: string } | undefined;1130    if (!data || data.source !== "peach-passkey-firefox") return;1131    if (detectBrowser() !== "firefox") return;1132    if (data.type !== "create") return;11331134    // Cooldown: a single page interaction can fire multiple credentials.create1135    // calls. Show the offer at most once per 30 seconds per page session.1136    const now = Date.now();1137    if (now - lastPasskeyOfferAt < PASSKEY_OFFER_COOLDOWN_MS) return;1138    lastPasskeyOfferAt = now;11391140    const domain = location.hostname.replace(/^www\./, "");1141    chrome.runtime.sendMessage({1142      type: "GET_PASSKEY_OFFER_DECLINED",1143      payload: { domain },1144    }).then((res: { ok: boolean; data?: boolean } | undefined) => {1145      if (res?.data === true) return;1146      const rpId = data.rpId ?? domain;1147      showPasskeyRegistrationOffer({1148        rpId,1149        rpName: data.rpName,1150        userName: data.userName,1151        userDisplayName: data.userDisplayName,1152      });1153    }).catch(() => {});1154  });1155}11561157// Surface State 11 (passkey-available) only when it adds value:1158//   - Cross-browser entry: Chrome passkey on Firefox or vice versa — neither1159//     browser will auto-route, so the banner explains the re-register need.1160//   - Firefox + same-browser entry: Firefox has no equivalent of1161//     webAuthenticationProxy, so without a banner the user has no signal that1162//     Peach is the source.1163// On Chrome with a same-browser entry: skip — webAuthenticationProxy handles1164// the page's own credentials.get transparently and the popup approval view1165// already surfaces it. A banner here would just be noise.1166//1167// Dedupe across navigation: each navigation re-injects this content script.1168// chrome.storage.session keyed by domain is the natural per-tab/per-session1169// memory; session storage clears when the user closes the browser.1170{1171  function checkPasskeyAvailability() {1172    const domain = location.hostname.replace(/^www\./, "");1173    if (!domain) return;1174    const sessionKey = `peach_state11_shown:${domain}`;1175    chrome.storage.session?.get(sessionKey).then((stored) => {1176      if (stored && (stored as Record<string, unknown>)[sessionKey]) return;1177      chrome.runtime.sendMessage({1178        type: "GET_PASSKEY_FOR_DOMAIN",1179        payload: { domain },1180      }).then((res: { ok: boolean; data?: { rpId: string; userName: string; browser?: "chrome" | "firefox" } | null } | undefined) => {1181        const data = res?.data;1182        if (!data) return;1183        const current = detectBrowser();1184        const isCrossBrowser =1185          data.browser && current !== "unknown" && data.browser !== current;1186        const valuableOnFirefox = current === "firefox";1187        if (!isCrossBrowser && !valuableOnFirefox) return;1188        chrome.storage.session?.set({ [sessionKey]: Date.now() }).catch(() => {});1189        showPasskeyAvailable({1190          rpId: data.rpId,1191          userName: data.userName,1192          fromBrowser: data.browser,1193          currentBrowser: current,1194        });1195      }).catch(() => {});1196    }).catch(() => {});1197  }11981199  // Defer until DOM is interactive — content_scripts run at document_idle but1200  // some pages still mutate visibly afterwards. A short delay also avoids1201  // surfacing the State 11 toast while the user is in the middle of typing.1202  if (document.readyState === "loading") {1203    document.addEventListener("DOMContentLoaded", () => setTimeout(checkPasskeyAvailability, 800));1204  } else {1205    setTimeout(checkPasskeyAvailability, 800);1206  }1207}