index.ts

1import {2  detectCardForm,3  detectLoginFields,4  findOTPDigitBoxGroup,5  getDeepActiveInput,6  getPageDomain,7  isAnyCredentialForm,8  isEmailFirstForm,9  isLoginForm,10  isSignupForm,11  isTOTPField,12  isVisible,13} from "./detect";14import {15  CardSelectorEntry,16  injectFieldIcon,17  SelectorEntry,18  showAutofillSelector,19  showCardSelector,20  showPasskeyAvailable,21  showPasskeyProGate,22  showPasskeyRegistrationOffer,23  showRememberSiteToast,24  showTOTPSelector,25} from "./inject";26import { detectBrowser } from "../shared/browser";27import { FIREFOX_USE_CONTENT_SCRIPT_PROXY } from "../shared/passkey-flags";28import { fillCardForm, fillFields, fillOTPDigitBoxes, fillTOTPCode, setNativeValue } from "./fill";29import { resolveAutofillInteractionTargets } from "./interaction";30import { setupSaveDetection } from "./save";31import { contentMLDetector } from "./content-ml-detector";32import { detectPasswordPolicy } from "./policy";33import type { FieldPrediction } from "../shared/ml";34import type { SavedIdentity, VaultEntry } from "../shared/types";3536// WeakMap (not WeakSet) — we keep the per-input cleanup callback as the value37// so we can tear down listeners if we ever need to re-process the same field.38// When the input is GC'd (SPA nav, React re-render), the map entry goes with39// it and we can re-inject without leaking the old handler.40const processedInputs = new WeakMap<HTMLInputElement, () => void>();41const AUTOFILL_FIELD_TYPES = new Set(["password", "username", "email"]);4243let currentDismiss: (() => void) | null = null;44// Field whose selector is currently open — used to avoid dismiss+reopen flicker45let currentAnchorField: HTMLInputElement | null = null;46// Prevents two concurrent handleFieldInteraction calls for the same field47const pendingInteractions = new WeakSet<HTMLInputElement>();48// Tracks the last field the user explicitly dismissed (Escape / click-outside / Tab).49// Suppresses spurious reopens until focus moves to a different field. Layer 150// of the dismissal model — see Projects.md §4.12.51let lastDismissedField: HTMLInputElement | null = null;5253// ── Dismissal lock (Layer 2) ────────────────────────────────────────54// After any user-initiated dismiss, briefly block ALL reopens regardless of55// which field is focused. Catches the case where a page rapidly moves focus56// between fields after Escape — without this, focus moving to a SECOND field57// in <100ms would re-trigger the popup before the user finished dismissing.58const DISMISS_LOCK_MS = 800;59let dismissLock = false;60let dismissLockTimer: ReturnType<typeof setTimeout> | null = null;61// Set when the inline popup was summoned specifically for a passkey-unlock62// flow. The VAULT_UNLOCKED handler checks this to skip re-triggering autofill63// (the passkey toast handles the next step instead).64let passkeySummonActive = false;65// Set while the passkey approval toast is visible. Prevents handleFieldInteraction66// from opening the autofill selector alongside it. Cleared by a window message67// posted by inject.tsx when the toast closes (and by DISMISS_PASSKEY_TOAST).68let passkeyToastActive = false;69function startDismissLock(): void {70  dismissLock = true;71  if (dismissLockTimer) clearTimeout(dismissLockTimer);72  dismissLockTimer = setTimeout(() => { dismissLock = false; }, DISMISS_LOCK_MS);73}74function canOpen(): boolean { return !dismissLock; }7576// ── Fill-success lock ───────────────────────────────────────────────77// After Peach autofills a form, the popup must NOT reappear on the filled78// fields, on the submit button (some sites refocus it briefly), or on any79// field in that form — even when host-page DOM mutations or the form's own80// validation flow refocus an input. Implemented as a WeakSet of forms plus81// a page-level timestamp:82//   - filledForms: every form Peach has filled this page session. Survives83//     until the form leaves the DOM (WeakSet GC).84//   - pageFilledAt: timestamp of last fill. Used as a 3s belt-and-suspenders85//     window for fields that aren't inside a <form> element (some SPAs).86// SPA navigation resets pageFilledAt via the urlObserver below; filledForms87// self-empties as old form elements get GC'd.88const filledForms = new WeakSet<HTMLFormElement>();89let pageFilledAt: number | null = null;90const PAGE_FILL_GRACE_MS = 3000;9192function recordFillSuccess(...fields: (HTMLInputElement | null | undefined)[]): void {93  for (const f of fields) {94    if (!f) continue;95    const form = f.closest("form");96    if (form) filledForms.add(form);97  }98  pageFilledAt = Date.now();99}100101function wasAlreadyFilled(field: HTMLInputElement): boolean {102  const form = field.closest("form");103  if (form && filledForms.has(form)) return true;104  if (pageFilledAt !== null && Date.now() - pageFilledAt < PAGE_FILL_GRACE_MS) return true;105  return false;106}107108function clearFillStateForExplicitSummon(field: HTMLInputElement): void {109  const form = field.closest("form");110  if (form) filledForms.delete(form);111  pageFilledAt = null;112}113114// Some sites briefly focus the submit button when the user clicks it (visual115// feedback, blur/focus dance for validation animations). Catch those at the116// focusin layer so we don't re-trigger handleFieldInteraction for an event117// target that was never going to be a credential field anyway.118function isSubmitButton(el: EventTarget | null): boolean {119  if (!(el instanceof HTMLElement)) return false;120  if (el instanceof HTMLButtonElement && el.type !== "button") return true;121  if (el instanceof HTMLInputElement && el.type === "submit") return true;122  if (el.getAttribute("type") === "submit") return true;123  const text = (el.textContent?.trim() ?? el.getAttribute("value") ?? "").toLowerCase();124  if (!text || text.length > 24) return false;125  return /^(submit|sign[ -]?in|log[ -]?in|continue|next|go)$/i.test(text);126}127128function debounce<T extends (...args: unknown[]) => void>(129  fn: T,130  ms: number131): (...args: Parameters<T>) => void {132  let timer: ReturnType<typeof setTimeout>;133  return (...args: Parameters<T>) => {134    clearTimeout(timer);135    timer = setTimeout(() => fn(...args), ms);136  };137}138139function showToast(message: string): void {140  const toast = document.createElement("div");141  toast.style.cssText = `142    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);143    background: #131109; color: #F0E8D8; padding: 8px 16px;144    border-radius: 8px; font-family: 'IBM Plex Mono', monospace;145    font-size: 11px; z-index: 2147483647; opacity: 0;146    transition: opacity 200ms ease;147    border: 1px solid rgba(240,232,216,0.07);148    pointer-events: none;149  `;150  toast.textContent = message;151  document.body.appendChild(toast);152  requestAnimationFrame(() => { toast.style.opacity = "1"; });153  setTimeout(() => {154    toast.style.opacity = "0";155    setTimeout(() => toast.remove(), 200);156  }, 2000);157}158159function showSearchPalette(): void {160  const host = document.createElement("div");161  host.style.cssText = "position:fixed;top:80px;left:50%;transform:translateX(-50%);z-index:2147483647;width:340px;";162  document.body.appendChild(host);163  const shadow = host.attachShadow({ mode: "closed" });164165  const style = document.createElement("style");166  style.textContent = `167    .p{background:#131109;border:1px solid rgba(240,232,216,.12);border-radius:12px;168      font-family:'IBM Plex Mono',monospace;font-size:12px;color:#F0E8D8;169      box-shadow:0 8px 24px rgba(0,0,0,.5);overflow:hidden}170    .h{padding:10px 12px 8px;border-bottom:1px solid rgba(240,232,216,.08);171      font-size:11px;color:rgba(240,232,216,.5);display:flex;justify-content:space-between;align-items:center}172    .x{background:none;border:none;color:rgba(240,232,216,.4);cursor:pointer;font-size:14px;padding:0;line-height:1}173    .s{padding:8px 12px}174    .s input{width:100%;box-sizing:border-box;background:rgba(240,232,216,.06);175      border:1px solid rgba(240,232,216,.12);border-radius:6px;color:#F0E8D8;176      padding:6px 8px;font-family:inherit;font-size:12px;outline:none}177    .l{max-height:220px;overflow-y:auto}178    .e{padding:8px 12px;cursor:pointer;display:flex;flex-direction:column;gap:2px}179    .e:hover{background:rgba(240,232,216,.06)}180    .et{font-size:12px}181    .eu{font-size:10px;color:rgba(240,232,216,.45)}182    .em{padding:12px;color:rgba(240,232,216,.4);text-align:center}183  `;184185  let allEntries: SelectorEntry[] = [];186  let query = "";187188  const panel = document.createElement("div");189  panel.className = "p";190191  const hdr = document.createElement("div");192  hdr.className = "h";193  const hdrText = document.createElement("span");194  hdrText.textContent = "No form detected — search your vault";195  const closeBtn = document.createElement("button");196  closeBtn.className = "x";197  closeBtn.textContent = "✕";198  hdr.appendChild(hdrText);199  hdr.appendChild(closeBtn);200201  const searchWrap = document.createElement("div");202  searchWrap.className = "s";203  const searchInput = document.createElement("input");204  searchInput.placeholder = "search...";205  searchWrap.appendChild(searchInput);206207  const list = document.createElement("div");208  list.className = "l";209210  panel.appendChild(hdr);211  panel.appendChild(searchWrap);212  panel.appendChild(list);213  shadow.appendChild(style);214  shadow.appendChild(panel);215216  function close() { host.remove(); }217218  closeBtn.onclick = close;219220  function onKeyDown(e: KeyboardEvent) {221    if (e.key === "Escape") { close(); document.removeEventListener("keydown", onKeyDown, true); }222  }223  document.addEventListener("keydown", onKeyDown, true);224225  function render() {226    const q = query.toLowerCase();227    const filtered = q228      ? allEntries.filter(e => e.title.toLowerCase().includes(q) || (e.username ?? "").toLowerCase().includes(q))229      : allEntries;230    list.innerHTML = "";231    if (filtered.length === 0) {232      const em = document.createElement("div");233      em.className = "em";234      em.textContent = query ? "no matches" : "vault is empty";235      list.appendChild(em);236      return;237    }238    for (const entry of filtered.slice(0, 20)) {239      const row = document.createElement("div");240      row.className = "e";241      const title = document.createElement("div");242      title.className = "et";243      title.textContent = entry.title;244      row.appendChild(title);245      if (entry.username) {246        const user = document.createElement("div");247        user.className = "eu";248        user.textContent = entry.username;249        row.appendChild(user);250      }251      row.onclick = async () => {252        const resp = await chrome.runtime.sendMessage({ type: "GET_ENTRY_FOR_FILL", payload: { id: entry.id } });253        const r = resp as { ok: boolean; data?: { password?: string } };254        if (r.ok && r.data?.password) {255          let alreadyWritten = false;256          try {257            await navigator.clipboard.writeText(r.data.password);258            alreadyWritten = true;259          } catch (err) {260            console.warn("[Peach] clipboard write denied:", err);261          }262          const copyResp = await chrome.runtime.sendMessage({263            type: "COPY",264            payload: { text: r.data.password, label: "Password", alreadyWritten },265          }) as { ok?: boolean } | undefined;266          if (alreadyWritten || copyResp?.ok) {267            showToast("Password copied");268          } else {269            showToast("Could not copy password — clipboard blocked");270          }271        } else {272          showToast("Could not copy password");273        }274        close();275        document.removeEventListener("keydown", onKeyDown, true);276      };277      list.appendChild(row);278    }279  }280281  searchInput.oninput = () => { query = searchInput.value; render(); };282283  fetchAutofillEntries(getPageDomain(), true).then(result => {284    if (result.locked) { showToast("Vault is locked — open Peach to unlock"); close(); return; }285    allEntries = result.entries;286    render();287    searchInput.focus();288  });289}290291function findTOTPField(root: Document | Element = document): HTMLInputElement | null {292  const inputs = root.querySelectorAll<HTMLInputElement>("input");293  for (const input of inputs) {294    if (isTOTPField(input)) return input;295  }296  return null;297}298299function findSameLoginTOTPField(passwordEl: HTMLInputElement): HTMLInputElement | null {300  const form = passwordEl.closest("form");301  return findTOTPField(form ?? document);302}303304305async function handleAutofill(306  _field: HTMLInputElement,307  usernameEl: HTMLInputElement | null,308  passwordEl: HTMLInputElement | null,309  entry: VaultEntry,310  emailEl?: HTMLInputElement | null311): Promise<HTMLInputElement | null> {312  if (!entry.username && !entry.password && !entry.email) return null;313  const pageDomain = getPageDomain();314  const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;315  // Fill the email field with entry.email if set; fall back to entry.username when316  // it looks like an email address (sites that store email-as-username and have a317  // separate email field on signup forms).318  const emailValue = entry.email ?? (entry.username?.includes("@") ? entry.username : "");319  fillFields(usernameEl, passwordEl, entry.username ?? "", entry.password ?? "", form, pageDomain, emailEl, emailValue);320  let filledTOTPField: HTMLInputElement | null = null;321322  if (entry.canary) {323    chrome.runtime.sendMessage({324      type: "FIRE_CANARY_PING",325      payload: {326        webhookUrl: entry.canary.webhookUrl,327        entryTitle: entry.title,328        trigger: "autofilled",329      },330    }).catch(() => {});331    chrome.runtime.sendMessage({332      type: "UPDATE_ENTRY",333      payload: {334        id: entry.id,335        patch: {336          canary: {337            ...entry.canary,338            lastPinged: Date.now(),339            pingCount: (entry.canary.pingCount ?? 0) + 1,340          },341        },342      },343    }).catch(() => {});344  }345346  // The background sends a freshly-generated 6-digit code (totpCode), never the347  // base32 seed (SEV-3-C). Fill the code straight in.348  const totpCode = (entry as { totpCode?: string }).totpCode;349  if (totpCode) {350    const code = totpCode;351    const totpField = passwordEl ? findSameLoginTOTPField(passwordEl) : null;352    if (fillTOTPCode(totpField, code)) {353      filledTOTPField = totpField;354    }355    let alreadyWritten = false;356    try {357      await navigator.clipboard.writeText(code);358      alreadyWritten = true;359    } catch (err) {360      console.warn("[Peach] clipboard write denied:", err);361    }362    const response = await chrome.runtime.sendMessage({363      type: "COPY",364      payload: { text: code, label: "TOTP", alreadyWritten },365    });366    if (filledTOTPField) {367      showToast("2FA code filled");368    } else if (alreadyWritten || (response as { ok?: boolean }).ok) {369      // Don't render the live code into the light-DOM toast — the page can read370      // it from the DOM and consume the one-time code (audit LOW). The code is371      // already on the clipboard; just confirm.372      showToast("2FA code copied");373    } else {374      showToast("Could not copy TOTP — clipboard blocked");375    }376  }377378  return filledTOTPField;379}380381async function fetchAutofillEntries(382  domain: string,383  includeAll = false384): Promise<{ entries: SelectorEntry[]; locked: boolean }> {385  const response = await chrome.runtime.sendMessage({386    type: "AUTOFILL_QUERY",387    payload: { domain, includeAll },388  });389  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };390  if (!res.ok && res.error === "vault_locked") {391    return { entries: [], locked: true };392  }393  return { entries: res.data ?? [], locked: false };394}395396async function fetchTOTPEntries(397  domain: string398): Promise<{ entries: SelectorEntry[]; locked: boolean }> {399  const response = await chrome.runtime.sendMessage({400    type: "AUTOFILL_QUERY",401    payload: { domain, kind: "totp" },402  });403  const res = response as { ok: boolean; data?: SelectorEntry[]; error?: string };404  if (!res.ok && res.error === "vault_locked") {405    return { entries: [], locked: true };406  }407  return { entries: res.data ?? [], locked: false };408}409410411function resolveAutofillFieldType(412  el: HTMLInputElement,413  predictedType?: FieldPrediction["type"] | null414): "password" | "username" | "email" | null {415  if (416    predictedType === "password" ||417    predictedType === "username" ||418    predictedType === "email"419  ) {420    return predictedType;421  }422423  const detected = detectLoginFields().find((field) => field.el === el)?.type;424  if (detected && AUTOFILL_FIELD_TYPES.has(detected)) {425    return detected;426  }427428  const htmlType = el.type.toLowerCase();429  if (htmlType === "password") return "password";430  if (htmlType === "email") return "email";431  return null;432}433434async function openAutofillSelector(435  anchorField: HTMLInputElement,436  usernameEl: HTMLInputElement | null,437  passwordEl: HTMLInputElement | null,438  domainEntries: SelectorEntry[],439  searchableEntries: SelectorEntry[],440  domain: string,441  identityKind: "email" | "username",442  emailEl?: HTMLInputElement | null443): Promise<void> {444  // No saved entries for this site → signup/new-account mode.445  // Fetch vault identities for the identity-first surface and locate446  // the confirm-password field so "Copy & fill" can populate it too.447  const isSignup = domainEntries.length === 0;448  let savedIdentities: SavedIdentity[] | undefined;449  let confirmEl: HTMLInputElement | null = null;450  if (isSignup) {451    try {452      const idResp = await chrome.runtime.sendMessage({ type: "GET_IDENTITIES" }).catch(() => null) as453        { ok: boolean; data?: SavedIdentity[] } | null;454      if (idResp?.ok && Array.isArray(idResp.data)) savedIdentities = idResp.data;455    } catch { /* silent fallback */ }456457    const form = (passwordEl ?? usernameEl)?.closest("form") ?? document.body;458    const allPwInputs = Array.from(form.querySelectorAll<HTMLInputElement>("input[type='password']"));459    confirmEl = allPwInputs.find(460      (el) => el !== passwordEl && /confirm|repeat|verify/i.test(el.name + el.id + el.placeholder)461    ) ?? (allPwInputs.length >= 2 ? allPwInputs.find((el) => el !== passwordEl) ?? null : null);462  }463464  currentDismiss?.();465  currentAnchorField = anchorField;466  currentDismiss = showAutofillSelector(467    anchorField,468    domainEntries,469    async (id: string) => {470      currentDismiss = null;471      currentAnchorField = null;472      const entryResponse = await chrome.runtime.sendMessage({473        type: "GET_ENTRY_FOR_FILL",474        payload: { id },475      });476      const entry = (entryResponse as { ok: boolean; data?: VaultEntry }).data;477      if (entry) {478        const filledTOTPField = await handleAutofill(anchorField, usernameEl, passwordEl, entry, emailEl);479        recordFillSuccess(anchorField, usernameEl, passwordEl, filledTOTPField);480        // Offer to remember the current site for this entry only if none of481        // its known domains (primary + additional) match — otherwise the482        // user already mapped it and the prompt would be noise.483        const pageDomain = location.hostname.replace(/^www\./, "");484        const entryDomains = new Set<string>();485        for (const u of [entry.url, ...(entry.additionalUrls ?? [])]) {486          try {487            if (u) entryDomains.add(new URL(u).hostname.replace(/^www\./, ""));488          } catch { /* ignore unparseable */ }489        }490        if (pageDomain && entryDomains.size > 0 && !entryDomains.has(pageDomain)) {491          showRememberSiteToast(pageDomain, entry.id);492        }493      }494    },495    {496      domain,497      searchableEntries,498      isSignup,499      identityKind,500      hasEmailField: !!emailEl,501      savedIdentities,502      onFillFields: (username, password, email) => {503        const form = (passwordEl ?? usernameEl)?.closest("form") as HTMLFormElement | null ?? null;504        fillFields(usernameEl, passwordEl, username, password, form, getPageDomain(), emailEl, email);505        if (password && confirmEl) setNativeValue(confirmEl, password);506        recordFillSuccess(anchorField, usernameEl, passwordEl);507      },508      onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },509    }510  );511}512513async function openTOTPSelector(anchorField: HTMLInputElement, otpDigitBoxes?: HTMLInputElement[]): Promise<void> {514  if (!canOpen()) return;515  if (currentDismiss && currentAnchorField === anchorField) return;516  if (anchorField !== lastDismissedField) lastDismissedField = null;517  if (anchorField === lastDismissedField) return;518  if (wasAlreadyFilled(anchorField)) return;519520  const domain = getPageDomain();521  const result = await fetchTOTPEntries(domain);522523  if (result.locked) {524    currentDismiss?.();525    currentAnchorField = anchorField;526    currentDismiss = showAutofillSelector(527      anchorField,528      [],529      () => {},530      {531        domain,532        locked: true,533        onUnlocked: () => void openTOTPSelector(anchorField),534        onDismiss: () => { lastDismissedField = anchorField; startDismissLock(); },535      }536    );537    return;538  }539540  if (result.entries.length === 0) {541    lastDismissedField = anchorField;542    startDismissLock();543    showToast("No 2FA entries for this site — add a code in Peach first");544    return;545  }546547  currentDismiss?.();548  currentAnchorField = anchorField;549  currentDismiss = showTOTPSelector(550    anchorField,551    result.entries,552    async (id: string) => {553      try {554        const entryResponse = await chrome.runtime.sendMessage({555          type: "GET_ENTRY_FOR_FILL",556          payload: { id },557        }).catch(() => null) as { ok: boolean; data?: VaultEntry } | null;558        const entry = entryResponse?.ok ? entryResponse.data : undefined;559        const code = (entry as { totpCode?: string } | undefined)?.totpCode;560        if (!code) return;561        if (otpDigitBoxes && otpDigitBoxes.length > 1) {562          fillOTPDigitBoxes(otpDigitBoxes, code);563        } else {564          setNativeValue(anchorField, code);565        }566        recordFillSuccess(anchorField);567        showToast("2FA code filled");568      } finally {569        currentDismiss = null;570        currentAnchorField = null;571      }572    },573    {574      domain,575      onDismiss: () => {576        lastDismissedField = anchorField;577        startDismissLock();578        currentDismiss = null;579        currentAnchorField = null;580      },581    }582  );583}584585586async function handleFieldInteraction(587  anchorField?: HTMLInputElement | null,588  explicitSummon = false589): Promise<void> {590  const field = anchorField ?? getDeepActiveInput();591  if (!field) return;592  if (!isVisible(field)) return;593594  // Passkey toast is visible — don't open the credential selector alongside it.595  if (passkeyToastActive) return;596597  // Layer 2: post-dismiss global lock. Catches rapid focus moves between598  // fields immediately after Escape/click-outside.599  if (!canOpen()) return;600601  // If a selector is already open for this exact field, don't flicker it.602  if (currentDismiss && currentAnchorField === field) return;603604  // If focus moved to a different field, the previous per-field dismiss lock605  // no longer applies.606  if (field !== lastDismissedField) lastDismissedField = null;607  // Layer 1: the user explicitly dismissed this field's selector — don't608  // reopen it until focus has genuinely moved away and come back.609  if (field === lastDismissedField) return;610611  // Fill-success lock: Peach already filled this form (or fired a fill612  // anywhere on the page within the grace window). Sites often refocus an613  // input on submit click, on validation, or on a transition to a success614  // state — none of those should re-open the popup.615  if (wasAlreadyFilled(field)) return;616617  // Prevent two concurrent calls for the same field (e.g. focusin + icon click618  // firing simultaneously — the second call would dismiss the first's selector).619  if (pendingInteractions.has(field)) return;620  pendingInteractions.add(field);621622  try {623    // Multi-digit OTP entry: individual maxLength=1 boxes get no icon (too small)624    // but the TOTP selector opens on focus and fills every box at once.625    const otpGroup = findOTPDigitBoxGroup(field);626    if (otpGroup) {627      await openTOTPSelector(otpGroup[0]!, otpGroup);628      return;629    }630631    if (isTOTPField(field)) {632      const formFields = detectLoginFields();633      if (!isLoginForm(formFields) && !isSignupForm(formFields)) {634        await openTOTPSelector(field);635        return;636      }637    }638639    const fieldType = field.type.toLowerCase();640641    const mlPromise = contentMLDetector.predictBatch([field]).then((preds) => {642      return preds[0] ?? null;643    });644645    const mlPrediction = await new Promise<FieldPrediction | null>((resolve) => {646      const timeout = setTimeout(() => resolve(null), 150);647      mlPromise.then((pred) => {648        clearTimeout(timeout);649        resolve(pred);650      });651    });652653    if (passkeyToastActive) return;654655    if (!explicitSummon && fieldType !== "password" && mlPrediction && mlPrediction.type !== "username" && mlPrediction.type !== "email") {656      return;657    }658659    const autofillFieldType = resolveAutofillFieldType(field, mlPrediction?.type);660    if (autofillFieldType) {661      reattachListeners(field, autofillFieldType);662    }663664    let fields = detectLoginFields();665    const targets = resolveAutofillInteractionTargets(field, fields, explicitSummon);666    if (!targets.shouldOpen) {667      return;668    }669670    const domain = getPageDomain();671    const firstResult = await fetchAutofillEntries(domain);672    if (passkeyToastActive) return;673674    // Vault is locked — show an inline unlock prompt.675    // Re-triggering after unlock is handled by the VAULT_UNLOCKED message so676    // there is no double-trigger race between onUnlocked and the broadcast.677    if (firstResult.locked) {678      currentDismiss?.();679      currentAnchorField = field;680      currentDismiss = showAutofillSelector(681        field,682        [],683        () => {},684        { domain, locked: true, onDismiss: () => { lastDismissedField = field; startDismissLock(); } }685      );686      return;687    }688689    const entries = firstResult.entries;690    // Always fetch the vault-wide list so the inline popup's search affordance691    // can reach entries that don't match this domain — the user may have a692    // valid login filed under a different URL (e.g. corp account on a vanity693    // domain) and still want to fill it here.694    const allEntries = (await fetchAutofillEntries(domain, true)).entries;695696    if (passkeyToastActive) return;697698    const pwField = fields.find((f) => f.type === "password");699    // For email-first flows there is no password field on this step — that is expected.700    if (!explicitSummon && !pwField && !isEmailFirstForm(fields)) return;701    const usernameEl = targets.usernameEl;702    const passwordEl = targets.passwordEl;703    const emailEl = targets.emailEl;704705    await openAutofillSelector(706      field,707      usernameEl,708      passwordEl,709      entries,710      allEntries,711      domain,712      autofillFieldType === "email" ? "email" : "username",713      emailEl,714    );715  } finally {716    pendingInteractions.delete(field);717  }718}719720async function onFocusIn(e: Event): Promise<void> {721  // Submit-button focus: catch the brief refocus some sites do when the722  // user clicks the login/submit button. Without this guard, that focus723  // event reaches handleFieldInteraction → getDeepActiveInput, and on724  // pages where the button is also a labelled <input> we briefly attempt725  // to open the popup over the very button the user just clicked.726  if (isSubmitButton(e.target)) return;727  await handleFieldInteraction();728}729730function reattachListeners(731  el: HTMLInputElement,732  detectedType?: "password" | "username" | "email",733  contextFields?: ReturnType<typeof detectLoginFields>734): void {735  if (processedInputs.has(el)) return;736  if (!resolveAutofillFieldType(el, detectedType)) return;737  // Only inject icon when a credential form is present on the page738  const fields = contextFields ?? detectLoginFields();739  if (!isAnyCredentialForm(fields)) return;740741  const cleanup = injectFieldIcon(el, () => {742    currentDismiss?.();743    currentDismiss = null;744    lastDismissedField = null; // icon click is an explicit user open — clear per-field lock745    dismissLock = false; // ...and the global lock746    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }747    clearFillStateForExplicitSummon(el);748    el.focus({ preventScroll: true });749    void handleFieldInteraction(el, true);750  });751  processedInputs.set(el, cleanup);752}753754const debouncedReattach = debounce(() => {755  const allFields = detectLoginFields();756  if (!isAnyCredentialForm(allFields)) return;757  const newFields = allFields.filter(758    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)759  );760  for (const f of newFields) {761    reattachListeners(f.el, f.type, allFields);762  }763  // 200ms debounce — below this, Peach and the host page's reactive layer764  // fight over the same layout properties every frame on React/Vue/Angular765  // login forms (v1.4.14 regression, Projects.md §4.7). Do not lower.766}, 200);767768function setupMutationObserver(): void {769  const observer = new MutationObserver(debouncedReattach);770  observer.observe(document.body, {771    childList: true,772    subtree: true,773    attributes: true,774    attributeFilter: ["type", "autocomplete", "name", "id", "placeholder", "hidden"],775  });776}777778function initialScan(aggressionLevel = 0, isFinalPass = false) {779  const allFields = detectLoginFields();780  const hasKnownForm = isAnyCredentialForm(allFields);781782  if (aggressionLevel === 0 && !hasKnownForm) return;783784  const newFields = allFields.filter(785    (f) => AUTOFILL_FIELD_TYPES.has(f.type) && !processedInputs.has(f.el)786  );787788  for (const f of newFields) {789    reattachListeners(f.el, f.type, allFields);790  }791792  // Level 2, final pass: inject icon on any visible password field even if793  // the form-context gate in reattachListeners would normally skip it.794  if (aggressionLevel >= 2 && isFinalPass && newFields.length === 0) {795    const pwInputs = document.querySelectorAll<HTMLInputElement>('input[type="password"]');796    for (const el of pwInputs) {797      if (isVisible(el) && !processedInputs.has(el)) {798        const cleanup = injectFieldIcon(el, () => {799          currentDismiss?.();800          currentDismiss = null;801          lastDismissedField = null;802          dismissLock = false;803          if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }804          clearFillStateForExplicitSummon(el);805          el.focus({ preventScroll: true });806          void handleFieldInteraction(el, true);807        });808        processedInputs.set(el, cleanup);809      }810    }811  }812}813814// ── TOTP-only fields ───────────────────────────────────────────────────────815// After a username/password submission, many sites swap the whole form for a816// lone "verification code" input. The credential selector intentionally gates817// on login/signup forms, so TOTP fields need a narrow path of their own.818const processedTOTPInputs = new WeakMap<HTMLInputElement, () => void>();819820function hasLoginOrSignupForm(): boolean {821  const fields = detectLoginFields();822  return isAnyCredentialForm(fields);823}824825function injectTOTPFieldIcon(field: HTMLInputElement): void {826  if (processedTOTPInputs.has(field)) return;827  const cleanup = injectFieldIcon(field, () => {828    currentDismiss?.();829    currentDismiss = null;830    currentAnchorField = null;831    lastDismissedField = null;832    dismissLock = false;833    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }834    clearFillStateForExplicitSummon(field);835    field.focus({ preventScroll: true });836    void openTOTPSelector(field);837  });838  processedTOTPInputs.set(field, cleanup);839}840841function scanTOTPFields(): void {842  if (hasLoginOrSignupForm()) return;843  const inputs = document.querySelectorAll<HTMLInputElement>("input");844  for (const input of inputs) {845    if (!isTOTPField(input)) continue;846    injectTOTPFieldIcon(input);847  }848}849850function setupTOTPAutofill(): void {851  setTimeout(scanTOTPFields, 0);852  setTimeout(scanTOTPFields, 500);853  setTimeout(scanTOTPFields, 1500);854855  const debouncedScan = debounce(scanTOTPFields, 200);856  new MutationObserver(debouncedScan).observe(document.body, {857    childList: true,858    subtree: true,859    attributes: true,860    attributeFilter: ["autocomplete", "name", "id", "placeholder", "hidden"],861  });862863  document.addEventListener("focusin", (e) => {864    const target = e.target;865    if (!(target instanceof HTMLInputElement)) return;866    if (hasLoginOrSignupForm()) return;867    if (!isTOTPField(target)) return;868    injectTOTPFieldIcon(target);869  }, true);870}871872document.addEventListener("focusin", onFocusIn);873874setupMutationObserver();875setupTOTPAutofill();876setupSaveDetection();877setupCardAutofill();878879// SPA navigation reset: the content script does not reload across in-app880// route changes (history.pushState, hash navigation, framework routers).881// When the URL changes we clear the page-level fill timestamp so the next882// page works normally; filledForms (a WeakSet) self-empties as old form883// elements leave the DOM. subtree:false because route swaps reliably884// mutate document.body's direct children — subtree:true would fire on885// every internal DOM update and cost us a re-check per mutation.886let lastObservedUrl = location.href;887new MutationObserver(() => {888  if (location.href !== lastObservedUrl) {889    lastObservedUrl = location.href;890    pageFilledAt = null;891  }892}).observe(document.body, { childList: true, subtree: false });893894// Async init: check recall map before running the initial scans so we can895// apply the right aggression level for domains the user has needed before.896(async () => {897  let aggressionLevel = 0;898  try {899    const resp = await chrome.runtime.sendMessage({ type: "GET_SETTINGS" });900    const s = (resp as { ok: boolean; data?: { manualSummonDomains?: Record<string, { summonCount: number }> } }).data;901    const domain = getPageDomain();902    const record = domain ? s?.manualSummonDomains?.[domain] : undefined;903    aggressionLevel = !record ? 0 : record.summonCount >= 2 ? 2 : 1;904  } catch { /* SW may be starting up; proceed with normal scan */ }905906  setTimeout(() => initialScan(aggressionLevel, false), 0);907  setTimeout(() => initialScan(aggressionLevel, false), 500);908  setTimeout(() => initialScan(aggressionLevel, true), 1500);909})();910911// ── Card autofill (State 7) ─────────────────────────────────────────912// Card forms get a parallel injection path. The login icon-injection gate913// in reattachListeners deliberately skips non-text fields, so we wire914// cards independently rather than retrofit AUTOFILL_FIELD_TYPES — keeping915// card detection contained makes the boundary easy to follow.916const processedCardInputs = new WeakMap<HTMLInputElement, () => void>();917let currentCardDismiss: (() => void) | null = null;918let currentCardAnchor: HTMLInputElement | null = null;919let lastDismissedCardField: HTMLInputElement | null = null;920921async function fetchSavedCards(): Promise<CardSelectorEntry[]> {922  const resp = await chrome.runtime.sendMessage({923    type: "AUTOFILL_QUERY",924    payload: { domain: getPageDomain(), kind: "card" },925  }).catch(() => null);926  const r = resp as { ok: boolean; data?: CardSelectorEntry[] } | null;927  return r?.ok ? (r.data ?? []) : [];928}929930async function openCardSelector(anchor: HTMLInputElement): Promise<void> {931  if (!canOpen()) return;932  if (currentCardDismiss && currentCardAnchor === anchor) return;933  if (anchor === lastDismissedCardField) return;934  if (anchor !== lastDismissedCardField) lastDismissedCardField = null;935  if (wasAlreadyFilled(anchor)) return;936937  const cards = await fetchSavedCards();938  if (cards.length === 0) return; // no saved cards → nothing to offer939940  const cardForm = detectCardForm();941  if (!cardForm?.number) return;942943  currentCardDismiss?.();944  currentCardAnchor = anchor;945  currentCardDismiss = showCardSelector(946    anchor,947    cards,948    {949      domain: getPageDomain(),950      onFill: (entry) => {951        if (!cardForm) return;952        fillCardForm(cardForm, {953          cardNumber: entry.cardNumber ?? "",954          expMonth: entry.expMonth ?? "",955          expYear: entry.expYear ?? "",956          cvc: entry.cvc ?? "",957          cardholderName: entry.cardholderName ?? "",958        });959        // All four card field types share the same form — recording the960        // number field's form is sufficient to suppress reopens on any of961        // them via wasAlreadyFilled().962        recordFillSuccess(cardForm.number, cardForm.cvc, cardForm.expiryCombo, cardForm.name);963        currentCardDismiss = null;964        currentCardAnchor = null;965      },966      onDismiss: () => {967        lastDismissedCardField = anchor;968        startDismissLock();969        currentCardDismiss = null;970        currentCardAnchor = null;971      },972    }973  );974}975976function injectCardIcon(field: HTMLInputElement): void {977  if (processedCardInputs.has(field)) return;978  const cleanup = injectFieldIcon(field, () => {979    currentCardDismiss?.();980    currentCardDismiss = null;981    lastDismissedCardField = null;982    dismissLock = false;983    if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }984    clearFillStateForExplicitSummon(field);985    field.focus({ preventScroll: true });986    void openCardSelector(field);987  });988  processedCardInputs.set(field, cleanup);989}990991function setupCardAutofill(): void {992  function scan() {993    const cardForm = detectCardForm();994    if (!cardForm?.number) return;995    if (!isVisible(cardForm.number)) return;996    injectCardIcon(cardForm.number);997  }998999  // Initial detection sweep — same retry cadence as login fields so1000  // late-hydrating SPA checkout pages get caught.1001  setTimeout(scan, 0);1002  setTimeout(scan, 500);1003  setTimeout(scan, 1500);10041005  // Re-scan on DOM mutation (separate from the login MutationObserver1006  // because card forms typically appear on a single navigation event,1007  // not field-by-field — coarser observation is sufficient here).1008  let pending = false;1009  new MutationObserver(() => {1010    if (pending) return;1011    pending = true;1012    setTimeout(() => { pending = false; scan(); }, 200);1013  }).observe(document.body, { childList: true, subtree: true });10141015  // Field-focus path: on focus of a cc-number input, ensure icon is1016  // present and consider opening the selector when the user explicitly1017  // clicks into the card number field.1018  document.addEventListener("focusin", (e) => {1019    const target = e.target;1020    if (!(target instanceof HTMLInputElement)) return;1021    const cardForm = detectCardForm();1022    if (cardForm?.number === target) {1023      injectCardIcon(target);1024    }1025  }, true);1026}10271028chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {1029  // Ignore anything not originating from our own background/service worker.1030  if (sender.id !== chrome.runtime.id) return;1031  if (msg?.type === "GET_SITE_PASSWORD_POLICY") {1032    const policy = detectPasswordPolicy();1033    sendResponse({ ok: true, data: policy });1034    return true;1035  }1036  if (msg?.type === "PING") {1037    sendResponse({ ok: true });1038    return true;1039  }1040  if (msg?.type === "SUMMON_AUTOFILL") {1041    const source = (msg as { type: string; source?: string }).source;1042    const isShortcut = source === "shortcut";1043    const isPasskeyUnlock = source === "passkey-unlock";10441045    const activeInput = getDeepActiveInput();1046    const fields = detectLoginFields();1047    const hasForm = isAnyCredentialForm(fields);10481049    if (hasForm) {1050      // Prefer the currently focused field if it's a login field, otherwise1051      // fall back to the first password field, then username/email.1052      const inForm = activeInput && fields.some(f => f.el === activeInput);1053      const target = inForm1054        ? activeInput1055        : (fields.find(f => f.type === "password")?.el1056            ?? fields.find(f => f.type === "username" || f.type === "email")?.el);1057      if (target) {1058        // Explicit user summon (shortcut or extension button) — bypass all1059        // suppression layers. The user is asking for the popup right now.1060        clearFillStateForExplicitSummon(target);1061        dismissLock = false;1062        if (dismissLockTimer) { clearTimeout(dismissLockTimer); dismissLockTimer = null; }1063        lastDismissedField = null;1064        void handleFieldInteraction(target);1065      }1066    } else if (isPasskeyUnlock) {1067      // Vault is locked during a passkey GET request. Show the inline unlock1068      // prompt anchored to whatever element is focused on the page (typically1069      // the passkey/sign-in button the user just tapped).1070      const anchor = (document.activeElement instanceof HTMLElement && document.activeElement !== document.body)1071        ? document.activeElement as unknown as HTMLInputElement1072        : null;1073      if (anchor) {1074        currentDismiss?.();1075        currentAnchorField = null;1076        passkeySummonActive = true;1077        currentDismiss = showAutofillSelector(anchor, [], () => {}, {1078          domain: getPageDomain(),1079          locked: true,1080          onDismiss: () => { passkeySummonActive = false; },1081        });1082      }1083    } else if (isShortcut) {1084      // Shortcut on a page with no login form — show clipboard-copy search mode.1085      showSearchPalette();1086    }10871088    // Record this domain for the recall system when triggered via shortcut.1089    if (isShortcut) {1090      const domain = getPageDomain();1091      if (domain) {1092        chrome.runtime.sendMessage({ type: "RECORD_MANUAL_SUMMON", payload: { domain } }).catch(() => {});1093      }1094    }10951096    sendResponse({ ok: hasForm || isShortcut || isPasskeyUnlock });1097    return true;1098  }1099  if (msg?.type === "PASSKEY_PRO_GATE") {1100    // Background rejected a passkey request for a free user. Show State 111101    // so they know what happened and can choose to upgrade.1102    showPasskeyProGate();1103    sendResponse({ ok: true });1104    return true;1105  }1106  if (msg?.type === "SHOW_PASSKEY_TOAST") {1107    // Block autofill selector for the lifetime of the toast and dismiss anything open.1108    passkeyToastActive = true;1109    if (currentDismiss) {1110      currentDismiss();1111      currentDismiss = null;1112      currentAnchorField = null;1113    }1114    return false; // inject.tsx owns the toast and calls sendResponse1115  }1116  if (msg?.type === "DISMISS_PASSKEY_TOAST") {1117    passkeyToastActive = false;1118    return false; // inject.tsx handles the actual dismissal1119  }1120  if (msg?.type === "VAULT_UNLOCKED") {1121    if (passkeySummonActive) {1122      // This unlock was for a pending passkey GET request. Just dismiss the1123      // inline popup — the passkey approval toast takes over from here.1124      passkeySummonActive = false;1125      if (currentDismiss) {1126        currentDismiss();1127        currentDismiss = null;1128        currentAnchorField = null;1129      }1130      sendResponse({ ok: true });1131      return true;1132    }1133    // Normal autofill path: close the locked-state prompt and re-open with1134    // fresh entry data at the same anchor field.1135    const savedField = currentAnchorField;1136    if (currentDismiss) {1137      currentDismiss();1138      currentDismiss = null;1139      currentAnchorField = null;1140    }1141    void handleFieldInteraction(savedField ?? undefined);1142    sendResponse({ ok: true });1143    return true;1144  }1145  return true;1146});11471148// inject.tsx posts this when the passkey toast closes (approve, deny, or timeout)1149// so we know it's safe to allow autofill again.1150window.addEventListener("message", (e: MessageEvent) => {1151  // Reject postMessages from cross-frame senders — only the same window's1152  // injected toast may flip this flag.1153  if (e.source !== window) return;1154  const d = e.data as { source?: string; type?: string } | undefined;1155  if (d?.source === "peach-passkey-toast" && d?.type === "toast-closed") {1156    passkeyToastActive = false;1157  }1158});11591160// ── Firefox passkey detection bridge (legacy observer path) ─────────────1161//1162// Pre-v2.12.0 the MAIN-world `passkeys-firefox.ts` was an observer — it1163// emitted `peach-passkey-firefox` postMessages so this content script could1164// surface State 12 (an inline "Save passkey to Peach" offer). v2.12.01165// replaced the observer with a full interception proxy (the page never1166// reaches a real navigator.credentials.create on Firefox anymore), and the1167// approval UI is opened by the background as part of the ceremony itself.1168// When the proxy is active the offer would be redundant noise, so the1169// listener gates on the flag. Once the proxy is removed (Firefox ships1170// webAuthenticationProxy) this whole block goes too.1171if (!FIREFOX_USE_CONTENT_SCRIPT_PROXY) {1172  let lastPasskeyOfferAt = 0;1173  const PASSKEY_OFFER_COOLDOWN_MS = 30_000;11741175  window.addEventListener("message", (event: MessageEvent) => {1176    if (event.source !== window) return;1177    const data = event.data as { source?: string; type?: string; rpId?: string; rpName?: string; userName?: string; userDisplayName?: string } | undefined;1178    if (!data || data.source !== "peach-passkey-firefox") return;1179    if (detectBrowser() !== "firefox") return;1180    if (data.type !== "create") return;11811182    // Cooldown: a single page interaction can fire multiple credentials.create1183    // calls. Show the offer at most once per 30 seconds per page session.1184    const now = Date.now();1185    if (now - lastPasskeyOfferAt < PASSKEY_OFFER_COOLDOWN_MS) return;1186    lastPasskeyOfferAt = now;11871188    const domain = location.hostname.replace(/^www\./, "");1189    chrome.runtime.sendMessage({1190      type: "GET_PASSKEY_OFFER_DECLINED",1191      payload: { domain },1192    }).then((res: { ok: boolean; data?: boolean } | undefined) => {1193      if (res?.data === true) return;1194      const rpId = data.rpId ?? domain;1195      showPasskeyRegistrationOffer({1196        rpId,1197        rpName: data.rpName,1198        userName: data.userName,1199        userDisplayName: data.userDisplayName,1200      });1201    }).catch(() => {});1202  });1203}12041205// Surface State 11 (passkey-available) only when it adds value:1206//   - Cross-browser entry: Chrome passkey on Firefox or vice versa — neither1207//     browser will auto-route, so the banner explains the re-register need.1208//   - Firefox + same-browser entry: Firefox has no equivalent of1209//     webAuthenticationProxy, so without a banner the user has no signal that1210//     Peach is the source.1211// On Chrome with a same-browser entry: skip — webAuthenticationProxy handles1212// the page's own credentials.get transparently and the popup approval view1213// already surfaces it. A banner here would just be noise.1214//1215// Dedupe across navigation: each navigation re-injects this content script.1216// chrome.storage.session keyed by domain is the natural per-tab/per-session1217// memory; session storage clears when the user closes the browser.1218{1219  function checkPasskeyAvailability() {1220    const domain = location.hostname.replace(/^www\./, "");1221    if (!domain) return;1222    const sessionKey = `peach_state11_shown:${domain}`;1223    chrome.storage.session?.get(sessionKey).then((stored) => {1224      if (stored && (stored as Record<string, unknown>)[sessionKey]) return;1225      chrome.runtime.sendMessage({1226        type: "GET_PASSKEY_FOR_DOMAIN",1227        payload: { domain },1228      }).then((res: { ok: boolean; data?: { rpId: string; userName: string; browser?: "chrome" | "firefox" } | null } | undefined) => {1229        const data = res?.data;1230        if (!data) return;1231        const current = detectBrowser();1232        const isCrossBrowser =1233          data.browser && current !== "unknown" && data.browser !== current;1234        const valuableOnFirefox = current === "firefox";1235        if (!isCrossBrowser && !valuableOnFirefox) return;1236        chrome.storage.session?.set({ [sessionKey]: Date.now() }).catch(() => {});1237        showPasskeyAvailable({1238          rpId: data.rpId,1239          userName: data.userName,1240          fromBrowser: data.browser,1241          currentBrowser: current,1242        });1243      }).catch(() => {});1244    }).catch(() => {});1245  }12461247  // Defer until DOM is interactive — content_scripts run at document_idle but1248  // some pages still mutate visibly afterwards. A short delay also avoids1249  // surfacing the State 11 toast while the user is in the middle of typing.1250  if (document.readyState === "loading") {1251    document.addEventListener("DOMContentLoaded", () => setTimeout(checkPasskeyAvailability, 800));1252  } else {1253    setTimeout(checkPasskeyAvailability, 800);1254  }1255}