bitwarden-estensione-browser/src/services/autofill.service.ts

import { CipherService } from 'jslib-common/abstractions/cipher.service';
import { EventService } from 'jslib-common/abstractions/event.service';
import { LogService } from 'jslib-common/abstractions/log.service';
import { TotpService } from 'jslib-common/abstractions/totp.service';
import { UserService } from 'jslib-common/abstractions/user.service';

import { AutofillService as AutofillServiceInterface } from './abstractions/autofill.service';

import { CipherRepromptType } from 'jslib-common/enums/cipherRepromptType';
import { CipherType } from 'jslib-common/enums/cipherType';
import { EventType } from 'jslib-common/enums/eventType';
import { FieldType } from 'jslib-common/enums/fieldType';

import { CipherView } from 'jslib-common/models/view/cipherView';

import AutofillField from '../models/autofillField';
import AutofillPageDetails from '../models/autofillPageDetails';
import AutofillScript from '../models/autofillScript';

import { BrowserApi } from '../browser/browserApi';

const CardAttributes: string[] = ['autoCompleteType', 'data-stripe', 'htmlName', 'htmlID', 'label-tag',
    'placeholder', 'label-left', 'label-top', 'data-recurly'];

const CardAttributesExtended: string[] = [...CardAttributes, 'label-right'];

const IdentityAttributes: string[] = ['autoCompleteType', 'data-stripe', 'htmlName', 'htmlID', 'label-tag',
    'placeholder', 'label-left', 'label-top', 'data-recurly'];

const UsernameFieldNames: string[] = [
    // English
    'username', 'user name', 'email', 'email address', 'e-mail', 'e-mail address', 'userid', 'user id',
    'customer id', 'login id',
    // German
    'benutzername', 'benutzer name', 'email adresse', 'e-mail adresse', 'benutzerid', 'benutzer id'];

const FirstnameFieldNames: string[] = [
    // English
    'f-name', 'first-name', 'given-name', 'first-n',
    // German
    'vorname',
];

const LastnameFieldNames: string[] = [
    // English
    'l-name', 'last-name', 's-name', 'surname', 'family-name', 'family-n', 'last-n',
    // German
    'nachname', 'familienname',
];

const ExcludedAutofillTypes: string[] = ['radio', 'checkbox', 'hidden', 'file', 'button', 'image', 'reset', 'search'];

// Each index represents a language. These three arrays should all be the same length.
// 0: English, 1: Danish, 2: German/Dutch, 3: French/Spanish/Italian, 4: Russian, 5: Portuguese
const MonthAbbr = ['mm', 'mm', 'mm', 'mm', 'mm', 'mm'];
const YearAbbrShort = ['yy', 'åå', 'jj', 'aa', 'гг', 'rr'];
const YearAbbrLong = ['yyyy', 'åååå', 'jjjj', 'aa', 'гггг', 'rrrr'];

const OperationDelays = new Map<string, number>([
    ['buzzsprout.com', 100],
]);

/* tslint:disable */
const IsoCountries: { [id: string]: string; } = {
    afghanistan: "AF", "aland islands": "AX", albania: "AL", algeria: "DZ", "american samoa": "AS", andorra: "AD",
    angola: "AO", anguilla: "AI", antarctica: "AQ", "antigua and barbuda": "AG", argentina: "AR", armenia: "AM",
    aruba: "AW", australia: "AU", austria: "AT", azerbaijan: "AZ", bahamas: "BS", bahrain: "BH", bangladesh: "BD",
    barbados: "BB", belarus: "BY", belgium: "BE", belize: "BZ", benin: "BJ", bermuda: "BM", bhutan: "BT",
    bolivia: "BO", "bosnia and herzegovina": "BA", botswana: "BW", "bouvet island": "BV", brazil: "BR",
    "british indian ocean territory": "IO", "brunei darussalam": "BN", bulgaria: "BG", "burkina faso": "BF",
    burundi: "BI", cambodia: "KH", cameroon: "CM", canada: "CA", "cape verde": "CV", "cayman islands": "KY",
    "central african republic": "CF", chad: "TD", chile: "CL", china: "CN", "christmas island": "CX",
    "cocos (keeling) islands": "CC", colombia: "CO", comoros: "KM", congo: "CG", "congo, democratic republic": "CD",
    "cook islands": "CK", "costa rica": "CR", "cote d'ivoire": "CI", croatia: "HR", cuba: "CU", cyprus: "CY",
    "czech republic": "CZ", denmark: "DK", djibouti: "DJ", dominica: "DM", "dominican republic": "DO", ecuador: "EC",
    egypt: "EG", "el salvador": "SV", "equatorial guinea": "GQ", eritrea: "ER", estonia: "EE", ethiopia: "ET",
    "falkland islands": "FK", "faroe islands": "FO", fiji: "FJ", finland: "FI", france: "FR", "french guiana": "GF",
    "french polynesia": "PF", "french southern territories": "TF", gabon: "GA", gambia: "GM", georgia: "GE",
    germany: "DE", ghana: "GH", gibraltar: "GI", greece: "GR", greenland: "GL", grenada: "GD", guadeloupe: "GP",
    guam: "GU", guatemala: "GT", guernsey: "GG", guinea: "GN", "guinea-bissau": "GW", guyana: "GY", haiti: "HT",
    "heard island & mcdonald islands": "HM", "holy see (vatican city state)": "VA", honduras: "HN", "hong kong": "HK",
    hungary: "HU", iceland: "IS", india: "IN", indonesia: "ID", "iran, islamic republic of": "IR", iraq: "IQ",
    ireland: "IE", "isle of man": "IM", israel: "IL", italy: "IT", jamaica: "JM", japan: "JP", jersey: "JE",
    jordan: "JO", kazakhstan: "KZ", kenya: "KE", kiribati: "KI", "republic of korea": "KR", "south korea": "KR",
    "democratic people's republic of korea": "KP", "north korea": "KP", kuwait: "KW", kyrgyzstan: "KG",
    "lao people's democratic republic": "LA", latvia: "LV", lebanon: "LB", lesotho: "LS", liberia: "LR",
    "libyan arab jamahiriya": "LY", liechtenstein: "LI", lithuania: "LT", luxembourg: "LU", macao: "MO",
    macedonia: "MK", madagascar: "MG", malawi: "MW", malaysia: "MY", maldives: "MV", mali: "ML", malta: "MT",
    "marshall islands": "MH", martinique: "MQ", mauritania: "MR", mauritius: "MU", mayotte: "YT", mexico: "MX",
    "micronesia, federated states of": "FM", moldova: "MD", monaco: "MC", mongolia: "MN", montenegro: "ME",
    montserrat: "MS", morocco: "MA", mozambique: "MZ", myanmar: "MM", namibia: "NA", nauru: "NR", nepal: "NP",
    netherlands: "NL", "netherlands antilles": "AN", "new caledonia": "NC", "new zealand": "NZ", nicaragua: "NI",
    niger: "NE", nigeria: "NG", niue: "NU", "norfolk island": "NF", "northern mariana islands": "MP", norway: "NO",
    oman: "OM", pakistan: "PK", palau: "PW", "palestinian territory, occupied": "PS", panama: "PA",
    "papua new guinea": "PG", paraguay: "PY", peru: "PE", philippines: "PH", pitcairn: "PN", poland: "PL",
    portugal: "PT", "puerto rico": "PR", qatar: "QA", reunion: "RE", romania: "RO", "russian federation": "RU",
    rwanda: "RW", "saint barthelemy": "BL", "saint helena": "SH", "saint kitts and nevis": "KN", "saint lucia": "LC",
    "saint martin": "MF", "saint pierre and miquelon": "PM", "saint vincent and grenadines": "VC", samoa: "WS",
    "san marino": "SM", "sao tome and principe": "ST", "saudi arabia": "SA", senegal: "SN", serbia: "RS",
    seychelles: "SC", "sierra leone": "SL", singapore: "SG", slovakia: "SK", slovenia: "SI", "solomon islands": "SB",
    somalia: "SO", "south africa": "ZA", "south georgia and sandwich isl.": "GS", spain: "ES", "sri lanka": "LK",
    sudan: "SD", suriname: "SR", "svalbard and jan mayen": "SJ", swaziland: "SZ", sweden: "SE", switzerland: "CH",
    "syrian arab republic": "SY", taiwan: "TW", tajikistan: "TJ", tanzania: "TZ", thailand: "TH", "timor-leste": "TL",
    togo: "TG", tokelau: "TK", tonga: "TO", "trinidad and tobago": "TT", tunisia: "TN", turkey: "TR",
    turkmenistan: "TM", "turks and caicos islands": "TC", tuvalu: "TV", uganda: "UG", ukraine: "UA",
    "united arab emirates": "AE", "united kingdom": "GB", "united states": "US",
    "united states outlying islands": "UM", uruguay: "UY", uzbekistan: "UZ", vanuatu: "VU", venezuela: "VE",
    vietnam: "VN", "virgin islands, british": "VG", "virgin islands, u.s.": "VI", "wallis and futuna": "WF",
    "western sahara": "EH", yemen: "YE", zambia: "ZM", zimbabwe: "ZW",
};

const IsoStates: { [id: string]: string; } = {
    alabama: 'AL', alaska: 'AK', 'american samoa': 'AS', arizona: 'AZ', arkansas: 'AR', california: 'CA',
    colorado: 'CO', connecticut: 'CT', delaware: 'DE', 'district of columbia': 'DC',
    'federated states of micronesia': 'FM', florida: 'FL', georgia: 'GA', guam: 'GU', hawaii: 'HI', idaho: 'ID',
    illinois: 'IL', indiana: 'IN', iowa: 'IA', kansas: 'KS', kentucky: 'KY', louisiana: 'LA', maine: 'ME',
    'marshall islands': 'MH', maryland: 'MD', massachusetts: 'MA', michigan: 'MI', minnesota: 'MN', mississippi: 'MS',
    missouri: 'MO', montana: 'MT', nebraska: 'NE', nevada: 'NV', 'new hampshire': 'NH', 'new jersey': 'NJ',
    'new mexico': 'NM', 'new york': 'NY', 'north carolina': 'NC', 'north dakota': 'ND',
    'northern mariana islands': 'MP', ohio: 'OH', oklahoma: 'OK', oregon: 'OR', palau: 'PW', pennsylvania: 'PA',
    'puerto rico': 'PR', 'rhode island': 'RI', 'south carolina': 'SC', 'south dakota': 'SD', tennessee: 'TN',
    texas: 'TX', utah: 'UT', vermont: 'VT', 'virgin islands': 'VI', virginia: 'VA', washington: 'WA',
    'west virginia': 'WV', wisconsin: 'WI', wyoming: 'WY',
};

var IsoProvinces: { [id: string]: string; } = {
    alberta: 'AB', 'british columbia': 'BC', manitoba: 'MB', 'new brunswick': 'NB', 'newfoundland and labrador': 'NL',
    'nova scotia': 'NS', ontario: 'ON', 'prince edward island': 'PE', quebec: 'QC', saskatchewan: 'SK',
};
/* tslint:enable */

export default class AutofillService implements AutofillServiceInterface {

    constructor(private cipherService: CipherService, private userService: UserService,
        private totpService: TotpService, private eventService: EventService,
        private logService: LogService) { }

    getFormsWithPasswordFields(pageDetails: AutofillPageDetails): any[] {
        const formData: any[] = [];

        const passwordFields = this.loadPasswordFields(pageDetails, true, true, false, false);
        if (passwordFields.length === 0) {
            return formData;
        }

        for (const formKey in pageDetails.forms) {
            if (!pageDetails.forms.hasOwnProperty(formKey)) {
                continue;
            }

            const formPasswordFields = passwordFields.filter(pf => formKey === pf.form);
            if (formPasswordFields.length > 0) {
                let uf = this.findUsernameField(pageDetails, formPasswordFields[0], false, false, false);
                if (uf == null) {
                    // not able to find any viewable username fields. maybe there are some "hidden" ones?
                    uf = this.findUsernameField(pageDetails, formPasswordFields[0], true, true, false);
                }
                formData.push({
                    form: pageDetails.forms[formKey],
                    password: formPasswordFields[0],
                    username: uf,
                    passwords: formPasswordFields,
                });
            }
        }

        return formData;
    }

    async doAutoFill(options: any) {
        let totpPromise: Promise<string> = null;
        const tab = await this.getActiveTab();
        if (!tab || !options.cipher || !options.pageDetails || !options.pageDetails.length) {
            throw new Error('Nothing to auto-fill.');
        }

        const canAccessPremium = await this.userService.canAccessPremium();
        let didAutofill = false;
        options.pageDetails.forEach((pd: any) => {
            // make sure we're still on correct tab
            if (pd.tab.id !== tab.id || pd.tab.url !== tab.url) {
                return;
            }

            const fillScript = this.generateFillScript(pd.details, {
                skipUsernameOnlyFill: options.skipUsernameOnlyFill || false,
                onlyEmptyFields: options.onlyEmptyFields || false,
                onlyVisibleFields: options.onlyVisibleFields || false,
                fillNewPassword: options.fillNewPassword || false,
                cipher: options.cipher,
            });

            if (!fillScript || !fillScript.script || !fillScript.script.length) {
                return;
            }

            // Add a small delay between operations
            fillScript.properties.delay_between_operations = 20;

            didAutofill = true;
            if (!options.skipLastUsed) {
                this.cipherService.updateLastUsedDate(options.cipher.id);
            }

            BrowserApi.tabSendMessage(tab, {
                command: 'fillForm',
                fillScript: fillScript,
                url: tab.url,
            }, { frameId: pd.frameId });

            if (options.cipher.type !== CipherType.Login || totpPromise || !options.cipher.login.totp ||
                (!canAccessPremium && !options.cipher.organizationUseTotp)) {
                return;
            }

            totpPromise = this.totpService.isAutoCopyEnabled().then(enabled => {
                if (enabled) {
                    return this.totpService.getCode(options.cipher.login.totp);
                }
                return null;
            });
        });

        if (didAutofill) {
            this.eventService.collect(EventType.Cipher_ClientAutofilled, options.cipher.id);
            if (totpPromise != null) {
                return await totpPromise;
            } else {
                return null;
            }
        } else {
            throw new Error('Did not auto-fill.');
        }
    }

    async doAutoFillActiveTab(pageDetails: any, fromCommand: boolean) {
        const tab = await this.getActiveTab();
        if (!tab || !tab.url) {
            return;
        }

        let cipher: CipherView;
        if (fromCommand) {
            cipher = await this.cipherService.getNextCipherForUrl(tab.url);
        } else {
            const lastLaunchedCipher = await this.cipherService.getLastLaunchedForUrl(tab.url, true);
            if (lastLaunchedCipher && Date.now().valueOf() - lastLaunchedCipher.localData?.lastLaunched?.valueOf() < 30000) {
                cipher = lastLaunchedCipher;
            }
            else {
                cipher = await this.cipherService.getLastUsedForUrl(tab.url, true);
            }

            if (cipher == null) {
                return null;
            }
        }

        if (cipher.reprompt !== CipherRepromptType.None) {
            return;
        }

        const totpCode = await this.doAutoFill({
            cipher: cipher,
            pageDetails: pageDetails,
            skipLastUsed: !fromCommand,
            skipUsernameOnlyFill: !fromCommand,
            onlyEmptyFields: !fromCommand,
            onlyVisibleFields: !fromCommand,
            fillNewPassword: fromCommand,
        });

        // Update last used index as autofill has succeed
        if (fromCommand) {
            this.cipherService.updateLastUsedIndexForUrl(tab.url);
        }

        return totpCode;
    }

    // Helpers

    private async getActiveTab(): Promise<any> {
        const tab = await BrowserApi.getTabFromCurrentWindow();
        if (!tab) {
            throw new Error('No tab found.');
        }

        return tab;
    }

    private generateFillScript(pageDetails: AutofillPageDetails, options: any): AutofillScript {
        if (!pageDetails || !options.cipher) {
            return null;
        }

        let fillScript = new AutofillScript(pageDetails.documentUUID);
        const filledFields: { [id: string]: AutofillField; } = {};
        const fields = options.cipher.fields;

        if (fields && fields.length) {
            const fieldNames: string[] = [];

            fields.forEach((f: any) => {
                if (this.hasValue(f.name)) {
                    fieldNames.push(f.name.toLowerCase());
                }
            });

            pageDetails.fields.forEach((field: any) => {
                if (filledFields.hasOwnProperty(field.opid)) {
                    return;
                }

                if (!field.viewable && field.tagName !== 'span') {
                    return;
                }

                const matchingIndex = this.findMatchingFieldIndex(field, fieldNames);
                if (matchingIndex > -1) {
                    let val = fields[matchingIndex].value;
                    if (val == null && fields[matchingIndex].type === FieldType.Boolean) {
                        val = 'false';
                    }

                    filledFields[field.opid] = field;
                    this.fillByOpid(fillScript, field, val);
                }
            });
        }

        switch (options.cipher.type) {
            case CipherType.Login:
                fillScript = this.generateLoginFillScript(fillScript, pageDetails, filledFields, options);
                break;
            case CipherType.Card:
                fillScript = this.generateCardFillScript(fillScript, pageDetails, filledFields, options);
                break;
            case CipherType.Identity:
                fillScript = this.generateIdentityFillScript(fillScript, pageDetails, filledFields, options);
                break;
            default:
                return null;
        }

        return fillScript;
    }

    private generateLoginFillScript(fillScript: AutofillScript, pageDetails: any,
        filledFields: { [id: string]: AutofillField; }, options: any): AutofillScript {
        if (!options.cipher.login) {
            return null;
        }

        const passwords: AutofillField[] = [];
        const usernames: AutofillField[] = [];
        let pf: AutofillField = null;
        let username: AutofillField = null;
        const login = options.cipher.login;

        if (!login.password || login.password === '') {
            // No password for this login. Maybe they just wanted to auto-fill some custom fields?
            fillScript = this.setFillScriptForFocus(filledFields, fillScript);
            return fillScript;
        }

        let passwordFields = this.loadPasswordFields(pageDetails, false, false, options.onlyEmptyFields,
            options.fillNewPassword);
        if (!passwordFields.length && !options.onlyVisibleFields) {
            // not able to find any viewable password fields. maybe there are some "hidden" ones?
            passwordFields = this.loadPasswordFields(pageDetails, true, true, options.onlyEmptyFields,
                options.fillNewPassword);
        }

        for (const formKey in pageDetails.forms) {
            if (!pageDetails.forms.hasOwnProperty(formKey)) {
                continue;
            }

            const passwordFieldsForForm: AutofillField[] = [];
            passwordFields.forEach(passField => {
                if (formKey === passField.form) {
                    passwordFieldsForForm.push(passField);
                }
            });

            passwordFields.forEach(passField => {
                pf = passField;
                passwords.push(pf);

                if (login.username) {
                    username = this.findUsernameField(pageDetails, pf, false, false, false);

                    if (!username && !options.onlyVisibleFields) {
                        // not able to find any viewable username fields. maybe there are some "hidden" ones?
                        username = this.findUsernameField(pageDetails, pf, true, true, false);
                    }

                    if (username) {
                        usernames.push(username);
                    }
                }
            });
        }

        if (passwordFields.length && !passwords.length) {
            // The page does not have any forms with password fields. Use the first password field on the page and the
            // input field just before it as the username.

            pf = passwordFields[0];
            passwords.push(pf);

            if (login.username && pf.elementNumber > 0) {
                username = this.findUsernameField(pageDetails, pf, false, false, true);

                if (!username && !options.onlyVisibleFields) {
                    // not able to find any viewable username fields. maybe there are some "hidden" ones?
                    username = this.findUsernameField(pageDetails, pf, true, true, true);
                }

                if (username) {
                    usernames.push(username);
                }
            }
        }

        if (!passwordFields.length && !options.skipUsernameOnlyFill) {
            // No password fields on this page. Let's try to just fuzzy fill the username.
            pageDetails.fields.forEach((f: any) => {
                if (f.viewable && (f.type === 'text' || f.type === 'email' || f.type === 'tel') &&
                    this.fieldIsFuzzyMatch(f, UsernameFieldNames)) {
                    usernames.push(f);
                }
            });
        }

        usernames.forEach(u => {
            if (filledFields.hasOwnProperty(u.opid)) {
                return;
            }

            filledFields[u.opid] = u;
            this.fillByOpid(fillScript, u, login.username);
        });

        passwords.forEach(p => {
            if (filledFields.hasOwnProperty(p.opid)) {
                return;
            }

            filledFields[p.opid] = p;
            this.fillByOpid(fillScript, p, login.password);
        });

        fillScript = this.setFillScriptForFocus(filledFields, fillScript);
        return fillScript;
    }

    private generateCardFillScript(fillScript: AutofillScript, pageDetails: any,
        filledFields: { [id: string]: AutofillField; }, options: any): AutofillScript {
        if (!options.cipher.card) {
            return null;
        }

        const fillFields: { [id: string]: AutofillField; } = {};

        pageDetails.fields.forEach((f: any) => {
            if (this.forCustomFieldsOnly(f)) {
                return;
            }

            if (this.isExcludedType(f.type, ExcludedAutofillTypes)) {
                return;
            }

            for (let i = 0; i < CardAttributes.length; i++) {
                const attr = CardAttributes[i];
                if (!f.hasOwnProperty(attr) || !f[attr] || !f.viewable) {
                    continue;
                }

                // ref https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofill
                // ref https://developers.google.com/web/fundamentals/design-and-ux/input/forms/
                if (!fillFields.cardholderName && this.isFieldMatch(f[attr],
                    ['cc-name', 'card-name', 'cardholder-name', 'cardholder', 'name', 'nom'],
                    ['cc-name', 'card-name', 'cardholder-name', 'cardholder', 'tbName'])) {
                    fillFields.cardholderName = f;
                    break;
                } else if (!fillFields.number && this.isFieldMatch(f[attr],
                    ['cc-number', 'cc-num', 'card-number', 'card-num', 'number', 'cc', 'cc-no', 'card-no',
                        'credit-card', 'numero-carte', 'carte', 'carte-credit', 'num-carte', 'cb-num'],
                    ['cc-number', 'cc-num', 'card-number', 'card-num', 'cc-no', 'card-no', 'numero-carte',
                        'num-carte', 'cb-num'])) {
                    fillFields.number = f;
                    break;
                } else if (!fillFields.exp && this.isFieldMatch(f[attr],
                    ['cc-exp', 'card-exp', 'cc-expiration', 'card-expiration', 'cc-ex', 'card-ex',
                        'card-expire', 'card-expiry', 'validite', 'expiration', 'expiry', 'mm-yy',
                        'mm-yyyy', 'yy-mm', 'yyyy-mm', 'expiration-date', 'payment-card-expiration',
                        'payment-cc-date'],
                    ['mm-yy', 'mm-yyyy', 'yy-mm', 'yyyy-mm', 'expiration-date',
                        'payment-card-expiration'])) {
                    fillFields.exp = f;
                    break;
                } else if (!fillFields.expMonth && this.isFieldMatch(f[attr],
                    ['exp-month', 'cc-exp-month', 'cc-month', 'card-month', 'cc-mo', 'card-mo', 'exp-mo',
                        'card-exp-mo', 'cc-exp-mo', 'card-expiration-month', 'expiration-month',
                        'cc-mm', 'cc-m', 'card-mm', 'card-m', 'card-exp-mm', 'cc-exp-mm', 'exp-mm', 'exp-m',
                        'expire-month', 'expire-mo', 'expiry-month', 'expiry-mo', 'card-expire-month',
                        'card-expire-mo', 'card-expiry-month', 'card-expiry-mo', 'mois-validite',
                        'mois-expiration', 'm-validite', 'm-expiration', 'expiry-date-field-month',
                        'expiration-date-month', 'expiration-date-mm', 'exp-mon', 'validity-mo',
                        'exp-date-mo', 'cb-date-mois', 'date-m'])) {
                    fillFields.expMonth = f;
                    break;
                } else if (!fillFields.expYear && this.isFieldMatch(f[attr],
                    ['exp-year', 'cc-exp-year', 'cc-year', 'card-year', 'cc-yr', 'card-yr', 'exp-yr',
                        'card-exp-yr', 'cc-exp-yr', 'card-expiration-year', 'expiration-year',
                        'cc-yy', 'cc-y', 'card-yy', 'card-y', 'card-exp-yy', 'cc-exp-yy', 'exp-yy', 'exp-y',
                        'cc-yyyy', 'card-yyyy', 'card-exp-yyyy', 'cc-exp-yyyy', 'expire-year', 'expire-yr',
                        'expiry-year', 'expiry-yr', 'card-expire-year', 'card-expire-yr', 'card-expiry-year',
                        'card-expiry-yr', 'an-validite', 'an-expiration', 'annee-validite',
                        'annee-expiration', 'expiry-date-field-year', 'expiration-date-year', 'cb-date-ann',
                        'expiration-date-yy', 'expiration-date-yyyy', 'validity-year', 'exp-date-year', 'date-y'])) {
                    fillFields.expYear = f;
                    break;
                } else if (!fillFields.code && this.isFieldMatch(f[attr],
                    ['cvv', 'cvc', 'cvv2', 'cc-csc', 'cc-cvv', 'card-csc', 'card-cvv', 'cvd', 'cid', 'cvc2',
                        'cnv', 'cvn2', 'cc-code', 'card-code', 'code-securite', 'security-code', 'crypto',
                        'card-verif', 'verification-code', 'csc', 'ccv'])) {
                    fillFields.code = f;
                    break;
                } else if (!fillFields.brand && this.isFieldMatch(f[attr],
                    ['cc-type', 'card-type', 'card-brand', 'cc-brand', 'cb-type'])) {
                    fillFields.brand = f;
                    break;
                }
            }
        });

        const card = options.cipher.card;
        this.makeScriptAction(fillScript, card, fillFields, filledFields, 'cardholderName');
        this.makeScriptAction(fillScript, card, fillFields, filledFields, 'number');
        this.makeScriptAction(fillScript, card, fillFields, filledFields, 'code');
        this.makeScriptAction(fillScript, card, fillFields, filledFields, 'brand');

        if (fillFields.expMonth && this.hasValue(card.expMonth)) {
            let expMonth: string = card.expMonth;

            if (fillFields.expMonth.selectInfo && fillFields.expMonth.selectInfo.options) {
                let index: number = null;
                const siOptions = fillFields.expMonth.selectInfo.options;
                if (siOptions.length === 12) {
                    index = parseInt(card.expMonth, null) - 1;
                } else if (siOptions.length === 13) {
                    if (siOptions[0][0] != null && siOptions[0][0] !== '' &&
                        (siOptions[12][0] == null || siOptions[12][0] === '')) {
                        index = parseInt(card.expMonth, null) - 1;
                    } else {
                        index = parseInt(card.expMonth, null);
                    }
                }

                if (index != null) {
                    const option = siOptions[index];
                    if (option.length > 1) {
                        expMonth = option[1];
                    }
                }
            } else if ((this.fieldAttrsContain(fillFields.expMonth, 'mm') || fillFields.expMonth.maxLength === 2)
                && expMonth.length === 1) {
                expMonth = '0' + expMonth;
            }

            filledFields[fillFields.expMonth.opid] = fillFields.expMonth;
            this.fillByOpid(fillScript, fillFields.expMonth, expMonth);
        }

        if (fillFields.expYear && this.hasValue(card.expYear)) {
            let expYear: string = card.expYear;
            if (fillFields.expYear.selectInfo && fillFields.expYear.selectInfo.options) {
                for (let i = 0; i < fillFields.expYear.selectInfo.options.length; i++) {
                    const o: [string, string] = fillFields.expYear.selectInfo.options[i];
                    if (o[0] === card.expYear || o[1] === card.expYear) {
                        expYear = o[1];
                        break;
                    }
                    if (o[1].length === 2 && card.expYear.length === 4 && o[1] === card.expYear.substring(2)) {
                        expYear = o[1];
                        break;
                    }
                    const colonIndex = o[1].indexOf(':');
                    if (colonIndex > -1 && o[1].length > colonIndex + 1) {
                        const val = o[1].substring(colonIndex + 2);
                        if (val != null && val.trim() !== '' && val === card.expYear) {
                            expYear = o[1];
                            break;
                        }
                    }
                }
            } else if (this.fieldAttrsContain(fillFields.expYear, 'yyyy') || fillFields.expYear.maxLength === 4) {
                if (expYear.length === 2) {
                    expYear = '20' + expYear;
                }
            } else if (this.fieldAttrsContain(fillFields.expYear, 'yy') || fillFields.expYear.maxLength === 2) {
                if (expYear.length === 4) {
                    expYear = expYear.substr(2);
                }
            }

            filledFields[fillFields.expYear.opid] = fillFields.expYear;
            this.fillByOpid(fillScript, fillFields.expYear, expYear);
        }

        if (fillFields.exp && this.hasValue(card.expMonth) && this.hasValue(card.expYear)) {
            const fullMonth = ('0' + card.expMonth).slice(-2);

            let fullYear: string = card.expYear;
            let partYear: string = null;
            if (fullYear.length === 2) {
                partYear = fullYear;
                fullYear = '20' + fullYear;
            } else if (fullYear.length === 4) {
                partYear = fullYear.substr(2, 2);
            }

            let exp: string = null;
            for (let i = 0; i < MonthAbbr.length; i++) {
                if (this.fieldAttrsContain(fillFields.exp, MonthAbbr[i] + '/' + YearAbbrShort[i]) &&
                    partYear != null) {
                    exp = fullMonth + '/' + partYear;
                } else if (this.fieldAttrsContain(fillFields.exp, MonthAbbr[i] + '/' + YearAbbrLong[i])) {
                    exp = fullMonth + '/' + fullYear;
                } else if (this.fieldAttrsContain(fillFields.exp, YearAbbrShort[i] + '/' + MonthAbbr[i]) &&
                    partYear != null) {
                    exp = partYear + '/' + fullMonth;
                } else if (this.fieldAttrsContain(fillFields.exp, YearAbbrLong[i] + '/' + MonthAbbr[i])) {
                    exp = fullYear + '/' + fullMonth;
                } else if (this.fieldAttrsContain(fillFields.exp, MonthAbbr[i] + '-' + YearAbbrShort[i]) &&
                    partYear != null) {
                    exp = fullMonth + '-' + partYear;
                } else if (this.fieldAttrsContain(fillFields.exp, MonthAbbr[i] + '-' + YearAbbrLong[i])) {
                    exp = fullMonth + '-' + fullYear;
                } else if (this.fieldAttrsContain(fillFields.exp, YearAbbrShort[i] + '-' + MonthAbbr[i]) &&
                    partYear != null) {
                    exp = partYear + '-' + fullMonth;
                } else if (this.fieldAttrsContain(fillFields.exp, YearAbbrLong[i] + '-' + MonthAbbr[i])) {
                    exp = fullYear + '-' + fullMonth;
                } else if (this.fieldAttrsContain(fillFields.exp, YearAbbrShort[i] + MonthAbbr[i]) &&
                    partYear != null) {
                    exp = partYear + fullMonth;
                } else if (this.fieldAttrsContain(fillFields.exp, YearAbbrLong[i] + MonthAbbr[i])) {
                    exp = fullYear + fullMonth;
                } else if (this.fieldAttrsContain(fillFields.exp, MonthAbbr[i] + YearAbbrShort[i]) &&
                    partYear != null) {
                    exp = fullMonth + partYear;
                } else if (this.fieldAttrsContain(fillFields.exp, MonthAbbr[i] + YearAbbrLong[i])) {
                    exp = fullMonth + fullYear;
                }

                if (exp != null) {
                    break;
                }
            }

            if (exp == null) {
                exp = fullYear + '-' + fullMonth;
            }

            this.makeScriptActionWithValue(fillScript, exp, fillFields.exp, filledFields);
        }

        return fillScript;
    }

    private fieldAttrsContain(field: any, containsVal: string) {
        if (!field) {
            return false;
        }

        let doesContain = false;
        CardAttributesExtended.forEach(attr => {
            if (doesContain || !field.hasOwnProperty(attr) || !field[attr]) {
                return;
            }

            let val = field[attr];
            val = val.replace(/ /g, '').toLowerCase();
            doesContain = val.indexOf(containsVal) > -1;
        });

        return doesContain;
    }

    private generateIdentityFillScript(fillScript: AutofillScript, pageDetails: any,
        filledFields: { [id: string]: AutofillField; }, options: any): AutofillScript {
        if (!options.cipher.identity) {
            return null;
        }

        const fillFields: { [id: string]: AutofillField; } = {};

        pageDetails.fields.forEach((f: any) => {
            if (this.forCustomFieldsOnly(f)) {
                return;
            }

            if (this.isExcludedType(f.type, ExcludedAutofillTypes)) {
                return;
            }

            for (let i = 0; i < IdentityAttributes.length; i++) {
                const attr = IdentityAttributes[i];
                if (!f.hasOwnProperty(attr) || !f[attr] || !f.viewable) {
                    continue;
                }

                // ref https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofill
                // ref https://developers.google.com/web/fundamentals/design-and-ux/input/forms/
                if (!fillFields.name && this.isFieldMatch(f[attr],
                    ['name', 'full-name', 'your-name'], ['full-name', 'your-name'])) {
                    fillFields.name = f;
                    break;
                } else if (!fillFields.firstName && this.isFieldMatch(f[attr],
                    FirstnameFieldNames)) {
                    fillFields.firstName = f;
                    break;
                } else if (!fillFields.middleName && this.isFieldMatch(f[attr],
                    ['m-name', 'middle-name', 'additional-name', 'middle-initial', 'middle-n', 'middle-i'])) {
                    fillFields.middleName = f;
                    break;
                } else if (!fillFields.lastName && this.isFieldMatch(f[attr],
                    LastnameFieldNames)) {
                    fillFields.lastName = f;
                    break;
                } else if (!fillFields.title && this.isFieldMatch(f[attr],
                    ['honorific-prefix', 'prefix', 'title'])) {
                    fillFields.title = f;
                    break;
                } else if (!fillFields.email && this.isFieldMatch(f[attr],
                    ['e-mail', 'email-address'])) {
                    fillFields.email = f;
                    break;
                } else if (!fillFields.address && this.isFieldMatch(f[attr],
                    ['address', 'street-address', 'addr', 'street', 'mailing-addr', 'billing-addr',
                        'mail-addr', 'bill-addr'], ['mailing-addr', 'billing-addr', 'mail-addr', 'bill-addr'])) {
                    fillFields.address = f;
                    break;
                } else if (!fillFields.address1 && this.isFieldMatch(f[attr],
                    ['address-1', 'address-line-1', 'addr-1', 'street-1'])) {
                    fillFields.address1 = f;
                    break;
                } else if (!fillFields.address2 && this.isFieldMatch(f[attr],
                    ['address-2', 'address-line-2', 'addr-2', 'street-2'])) {
                    fillFields.address2 = f;
                    break;
                } else if (!fillFields.address3 && this.isFieldMatch(f[attr],
                    ['address-3', 'address-line-3', 'addr-3', 'street-3'])) {
                    fillFields.address3 = f;
                    break;
                } else if (!fillFields.postalCode && this.isFieldMatch(f[attr],
                    ['postal', 'zip', 'zip2', 'zip-code', 'postal-code', 'post-code', 'address-zip',
                        'address-postal', 'address-code', 'address-postal-code', 'address-zip-code'])) {
                    fillFields.postalCode = f;
                    break;
                } else if (!fillFields.city && this.isFieldMatch(f[attr],
                    ['city', 'town', 'address-level-2', 'address-city', 'address-town'])) {
                    fillFields.city = f;
                    break;
                } else if (!fillFields.state && this.isFieldMatch(f[attr],
                    ['state', 'province', 'provence', 'address-level-1', 'address-state',
                        'address-province'])) {
                    fillFields.state = f;
                    break;
                } else if (!fillFields.country && this.isFieldMatch(f[attr],
                    ['country', 'country-code', 'country-name', 'address-country', 'address-country-name',
                        'address-country-code'])) {
                    fillFields.country = f;
                    break;
                } else if (!fillFields.phone && this.isFieldMatch(f[attr],
                    ['phone', 'mobile', 'mobile-phone', 'tel', 'telephone', 'phone-number'])) {
                    fillFields.phone = f;
                    break;
                } else if (!fillFields.username && this.isFieldMatch(f[attr],
                    ['user-name', 'user-id', 'screen-name'])) {
                    fillFields.username = f;
                    break;
                } else if (!fillFields.company && this.isFieldMatch(f[attr],
                    ['company', 'company-name', 'organization', 'organization-name'])) {
                    fillFields.company = f;
                    break;
                }
            }
        });

        const identity = options.cipher.identity;
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'title');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'firstName');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'middleName');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'lastName');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'address1');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'address2');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'address3');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'city');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'postalCode');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'company');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'email');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'phone');
        this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'username');

        let filledState = false;
        if (fillFields.state && identity.state && identity.state.length > 2) {
            const stateLower = identity.state.toLowerCase();
            const isoState = IsoStates[stateLower] || IsoProvinces[stateLower];
            if (isoState) {
                filledState = true;
                this.makeScriptActionWithValue(fillScript, isoState, fillFields.state, filledFields);
            }
        }

        if (!filledState) {
            this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'state');
        }

        let filledCountry = false;
        if (fillFields.country && identity.country && identity.country.length > 2) {
            const countryLower = identity.country.toLowerCase();
            const isoCountry = IsoCountries[countryLower];
            if (isoCountry) {
                filledCountry = true;
                this.makeScriptActionWithValue(fillScript, isoCountry, fillFields.country, filledFields);
            }
        }

        if (!filledCountry) {
            this.makeScriptAction(fillScript, identity, fillFields, filledFields, 'country');
        }

        if (fillFields.name && (identity.firstName || identity.lastName)) {
            let fullName = '';
            if (this.hasValue(identity.firstName)) {
                fullName = identity.firstName;
            }
            if (this.hasValue(identity.middleName)) {
                if (fullName !== '') {
                    fullName += ' ';
                }
                fullName += identity.middleName;
            }
            if (this.hasValue(identity.lastName)) {
                if (fullName !== '') {
                    fullName += ' ';
                }
                fullName += identity.lastName;
            }

            this.makeScriptActionWithValue(fillScript, fullName, fillFields.name, filledFields);
        }

        if (fillFields.address && this.hasValue(identity.address1)) {
            let address = '';
            if (this.hasValue(identity.address1)) {
                address = identity.address1;
            }
            if (this.hasValue(identity.address2)) {
                if (address !== '') {
                    address += ', ';
                }
                address += identity.address2;
            }
            if (this.hasValue(identity.address3)) {
                if (address !== '') {
                    address += ', ';
                }
                address += identity.address3;
            }

            this.makeScriptActionWithValue(fillScript, address, fillFields.address, filledFields);
        }

        return fillScript;
    }

    private isExcludedType(type: string, excludedTypes: string[]) {
        return excludedTypes.indexOf(type) > -1;
    }

    private isFieldMatch(value: string, options: string[], containsOptions?: string[]): boolean {
        value = value.trim().toLowerCase().replace(/[^a-zA-Z0-9]+/g, '');
        for (let i = 0; i < options.length; i++) {
            let option = options[i];
            const checkValueContains = containsOptions == null || containsOptions.indexOf(option) > -1;
            option = option.toLowerCase().replace(/-/g, '');
            if (value === option || (checkValueContains && value.indexOf(option) > -1)) {
                return true;
            }
        }

        return false;
    }

    private makeScriptAction(fillScript: AutofillScript, cipherData: any, fillFields: { [id: string]: AutofillField; },
        filledFields: { [id: string]: AutofillField; }, dataProp: string, fieldProp?: string) {
        fieldProp = fieldProp || dataProp;
        this.makeScriptActionWithValue(fillScript, cipherData[dataProp], fillFields[fieldProp], filledFields);
    }

    private makeScriptActionWithValue(fillScript: AutofillScript, dataValue: any, field: AutofillField,
        filledFields: { [id: string]: AutofillField; }) {

        let doFill = false;
        if (this.hasValue(dataValue) && field) {
            if (field.type === 'select-one' && field.selectInfo && field.selectInfo.options) {
                for (let i = 0; i < field.selectInfo.options.length; i++) {
                    const option = field.selectInfo.options[i];
                    for (let j = 0; j < option.length; j++) {
                        if (this.hasValue(option[j]) && option[j].toLowerCase() === dataValue.toLowerCase()) {
                            doFill = true;
                            if (option.length > 1) {
                                dataValue = option[1];
                            }
                            break;
                        }
                    }

                    if (doFill) {
                        break;
                    }
                }
            } else {
                doFill = true;
            }
        }

        if (doFill) {
            filledFields[field.opid] = field;
            this.fillByOpid(fillScript, field, dataValue);
        }
    }

    private loadPasswordFields(pageDetails: AutofillPageDetails, canBeHidden: boolean, canBeReadOnly: boolean,
        mustBeEmpty: boolean, fillNewPassword: boolean) {
        const arr: AutofillField[] = [];
        pageDetails.fields.forEach(f => {
            if (this.forCustomFieldsOnly(f)) {
                return;
            }

            const isPassword = f.type === 'password';
            const valueIsLikePassword = (value: string) => {
                if (value == null) {
                    return false;
                }
                // Removes all whitespace, _ and - characters
                const cleanedValue = value.toLowerCase().replace(/[\s_\-]/g, '');

                if (cleanedValue.indexOf('password') < 0) {
                    return false;
                }

                const ignoreList = ['onetimepassword', 'captcha', 'findanything'];
                if (ignoreList.some(i => cleanedValue.indexOf(i) > -1)) {
                    return false;
                }

                return true;
            };
            const isLikePassword = () => {
                if (f.type !== 'text') {
                    return false;
                }
                if (valueIsLikePassword(f.htmlID)) {
                    return true;
                }
                if (valueIsLikePassword(f.htmlName)) {
                    return true;
                }
                if (valueIsLikePassword(f.placeholder)) {
                    return true;
                }
                return false;
            };
            if (!f.disabled && (canBeReadOnly || !f.readonly) && (isPassword || isLikePassword())
                && (canBeHidden || f.viewable) && (!mustBeEmpty || f.value == null || f.value.trim() === '')
                && (fillNewPassword || f.autoCompleteType !== 'new-password')) {
                arr.push(f);
            }
        });
        return arr;
    }

    private findUsernameField(pageDetails: AutofillPageDetails, passwordField: AutofillField, canBeHidden: boolean,
        canBeReadOnly: boolean, withoutForm: boolean) {
        let usernameField: AutofillField = null;
        for (let i = 0; i < pageDetails.fields.length; i++) {
            const f = pageDetails.fields[i];
            if (this.forCustomFieldsOnly(f)) {
                continue;
            }

            if (f.elementNumber >= passwordField.elementNumber) {
                break;
            }

            if (!f.disabled && (canBeReadOnly || !f.readonly) &&
                (withoutForm || f.form === passwordField.form) && (canBeHidden || f.viewable) &&
                (f.type === 'text' || f.type === 'email' || f.type === 'tel')) {
                usernameField = f;

                if (this.findMatchingFieldIndex(f, UsernameFieldNames) > -1) {
                    // We found an exact match. No need to keep looking.
                    break;
                }
            }
        }

        return usernameField;
    }

    private findMatchingFieldIndex(field: AutofillField, names: string[]): number {
        for (let i = 0; i < names.length; i++) {
            if (names[i].indexOf('=') > -1) {
                if (this.fieldPropertyIsPrefixMatch(field, 'htmlID', names[i], 'id')) {
                    return i;
                }
                if (this.fieldPropertyIsPrefixMatch(field, 'htmlName', names[i], 'name')) {
                    return i;
                }
                if (this.fieldPropertyIsPrefixMatch(field, 'label-tag', names[i], 'label')) {
                    return i;
                }
                if (this.fieldPropertyIsPrefixMatch(field, 'label-aria', names[i], 'label')) {
                    return i;
                }
                if (this.fieldPropertyIsPrefixMatch(field, 'placeholder', names[i], 'placeholder')) {
                    return i;
                }
            }

            if (this.fieldPropertyIsMatch(field, 'htmlID', names[i])) {
                return i;
            }
            if (this.fieldPropertyIsMatch(field, 'htmlName', names[i])) {
                return i;
            }
            if (this.fieldPropertyIsMatch(field, 'label-tag', names[i])) {
                return i;
            }
            if (this.fieldPropertyIsMatch(field, 'label-aria', names[i])) {
                return i;
            }
            if (this.fieldPropertyIsMatch(field, 'placeholder', names[i])) {
                return i;
            }
        }

        return -1;
    }

    private fieldPropertyIsPrefixMatch(field: any, property: string, name: string, prefix: string,
        separator = '='): boolean {
        if (name.indexOf(prefix + separator) === 0) {
            const sepIndex = name.indexOf(separator);
            const val = name.substring(sepIndex + 1);
            return val != null && this.fieldPropertyIsMatch(field, property, val);
        }
        return false;
    }

    private fieldPropertyIsMatch(field: any, property: string, name: string): boolean {
        let fieldVal = field[property] as string;
        if (!this.hasValue(fieldVal)) {
            return false;
        }

        fieldVal = fieldVal.trim().replace(/(?:\r\n|\r|\n)/g, '');
        if (name.startsWith('regex=')) {
            try {
                const regexParts = name.split('=', 2);
                if (regexParts.length === 2) {
                    const regex = new RegExp(regexParts[1], 'i');
                    return regex.test(fieldVal);
                }
            } catch (e) {
                this.logService.error(e);
            }
        } else if (name.startsWith('csv=')) {
            const csvParts = name.split('=', 2);
            if (csvParts.length === 2) {
                const csvVals = csvParts[1].split(',');
                for (let i = 0; i < csvVals.length; i++) {
                    const val = csvVals[i];
                    if (val != null && val.trim().toLowerCase() === fieldVal.toLowerCase()) {
                        return true;
                    }
                }
                return false;
            }
        }

        return fieldVal.toLowerCase() === name;
    }

    private fieldIsFuzzyMatch(field: AutofillField, names: string[]): boolean {
        if (this.hasValue(field.htmlID) && this.fuzzyMatch(names, field.htmlID)) {
            return true;
        }
        if (this.hasValue(field.htmlName) && this.fuzzyMatch(names, field.htmlName)) {
            return true;
        }
        if (this.hasValue(field['label-tag']) && this.fuzzyMatch(names, field['label-tag'])) {
            return true;
        }
        if (this.hasValue(field.placeholder) && this.fuzzyMatch(names, field.placeholder)) {
            return true;
        }
        if (this.hasValue(field['label-left']) && this.fuzzyMatch(names, field['label-left'])) {
            return true;
        }
        if (this.hasValue(field['label-top']) && this.fuzzyMatch(names, field['label-top'])) {
            return true;
        }
        if (this.hasValue(field['label-aria']) && this.fuzzyMatch(names, field['label-aria'])) {
            return true;
        }

        return false;
    }

    private fuzzyMatch(options: string[], value: string): boolean {
        if (options == null || options.length === 0 || value == null || value === '') {
            return false;
        }

        value = value.replace(/(?:\r\n|\r|\n)/g, '').trim().toLowerCase();

        for (let i = 0; i < options.length; i++) {
            if (value.indexOf(options[i]) > -1) {
                return true;
            }
        }

        return false;
    }

    private hasValue(str: string): boolean {
        return str && str !== '';
    }

    private setFillScriptForFocus(filledFields: { [id: string]: AutofillField; },
        fillScript: AutofillScript): AutofillScript {
        let lastField: AutofillField = null;
        let lastPasswordField: AutofillField = null;

        for (const opid in filledFields) {
            if (filledFields.hasOwnProperty(opid) && filledFields[opid].viewable) {
                lastField = filledFields[opid];

                if (filledFields[opid].type === 'password') {
                    lastPasswordField = filledFields[opid];
                }
            }
        }

        // Prioritize password field over others.
        if (lastPasswordField) {
            fillScript.script.push(['focus_by_opid', lastPasswordField.opid]);
        } else if (lastField) {
            fillScript.script.push(['focus_by_opid', lastField.opid]);
        }

        return fillScript;
    }

    private fillByOpid(fillScript: AutofillScript, field: AutofillField, value: string): void {
        if (field.maxLength && value && value.length > field.maxLength) {
            value = value.substr(0, value.length);
        }
        if (field.tagName !== 'span') {
            fillScript.script.push(['click_on_opid', field.opid]);
            fillScript.script.push(['focus_by_opid', field.opid]);
        }
        fillScript.script.push(['fill_by_opid', field.opid, value]);
    }

    private forCustomFieldsOnly(field: AutofillField): boolean {
        return field.tagName === 'span';
    }
}