364 lines
13 KiB
JavaScript
364 lines
13 KiB
JavaScript
var schema = require('../schema').tables,
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_ = require('lodash'),
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validator = require('validator'),
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moment = require('moment-timezone'),
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assert = require('assert'),
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Promise = require('bluebird'),
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common = require('../../lib/common'),
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settingsCache = require('../../services/settings/cache'),
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urlService = require('../../services/url'),
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validatePassword,
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validateSchema,
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validateSettings,
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validateRedirects,
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validate;
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function assertString(input) {
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assert(typeof input === 'string', 'Validator js validates strings only');
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}
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/**
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* Counts repeated characters in a string. When 50% or more characters are the same,
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* we return false and therefore invalidate the string.
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* @param {String} stringToTest The password string to check.
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* @return {Boolean}
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*/
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function characterOccurance(stringToTest) {
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var chars = {},
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allowedOccurancy,
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valid = true;
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stringToTest = _.toString(stringToTest);
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allowedOccurancy = stringToTest.length / 2;
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// Loop through string and accumulate character counts
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_.each(stringToTest, function (char) {
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if (!chars[char]) {
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chars[char] = 1;
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} else {
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chars[char] += 1;
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}
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});
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// check if any of the accumulated chars exceed the allowed occurancy
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// of 50% of the words' length.
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_.forIn(chars, function (charCount) {
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if (charCount >= allowedOccurancy) {
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valid = false;
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}
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});
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return valid;
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}
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// extends has been removed in validator >= 5.0.0, need to monkey-patch it back in
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// @TODO: We modify the global validator dependency here! https://github.com/chriso/validator.js/issues/525#issuecomment-213149570
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validator.extend = function (name, fn) {
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validator[name] = function () {
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var args = Array.prototype.slice.call(arguments);
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assertString(args[0]);
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return fn.apply(validator, args);
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};
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};
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// Provide a few custom validators
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validator.extend('empty', function empty(str) {
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return _.isEmpty(str);
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});
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validator.extend('notContains', function notContains(str, badString) {
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return !_.includes(str, badString);
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});
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validator.extend('isTimezone', function isTimezone(str) {
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return moment.tz.zone(str) ? true : false;
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});
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validator.extend('isEmptyOrURL', function isEmptyOrURL(str) {
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return (_.isEmpty(str) || validator.isURL(str, {require_protocol: false}));
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});
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validator.extend('isSlug', function isSlug(str) {
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return validator.matches(str, /^[a-z0-9\-_]+$/);
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});
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/**
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* Validation against simple password rules
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* Returns false when validation fails and true for a valid password
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* @param {String} password The password string to check.
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* @param {String} email The users email address to validate agains password.
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* @param {String} blogTitle Optional blogTitle value, when blog title is not set yet, e. g. in setup process.
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* @return {Object} example for returned validation Object:
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* invalid password: `validationResult: {isValid: false, message: 'Sorry, you cannot use an insecure password.'}`
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* valid password: `validationResult: {isValid: true}`
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*/
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validatePassword = function validatePassword(password, email, blogTitle) {
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var validationResult = {isValid: true},
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disallowedPasswords = ['password', 'ghost', 'passw0rd'],
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blogUrl = urlService.utils.urlFor('home', true),
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badPasswords = [
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'1234567890',
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'qwertyuiop',
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'qwertzuiop',
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'asdfghjkl;',
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'abcdefghij',
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'0987654321',
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'1q2w3e4r5t',
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'12345asdfg'
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];
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blogTitle = blogTitle ? blogTitle : settingsCache.get('title');
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blogUrl = blogUrl.replace(/^http(s?):\/\//, '');
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// password must be longer than 10 characters
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if (!validator.isLength(password, 10)) {
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validationResult.isValid = false;
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validationResult.message = common.i18n.t('errors.models.user.passwordDoesNotComplyLength', {minLength: 10});
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return validationResult;
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}
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// dissallow password from badPasswords list (e. g. '1234567890')
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_.each(badPasswords, function (badPassword) {
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if (badPassword === password) {
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validationResult.isValid = false;
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}
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});
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// password must not match with users' email
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if (email && email.toLowerCase() === password.toLowerCase()) {
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validationResult.isValid = false;
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}
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// password must not contain the words 'ghost', 'password', or 'passw0rd'
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_.each(disallowedPasswords, function (disallowedPassword) {
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if (password.toLowerCase().indexOf(disallowedPassword) >= 0) {
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validationResult.isValid = false;
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}
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});
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// password must not match with blog title
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if (blogTitle && blogTitle.toLowerCase() === password.toLowerCase()) {
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validationResult.isValid = false;
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}
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// password must not match with blog URL (without protocol, with or without trailing slash)
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if (blogUrl && (blogUrl.toLowerCase() === password.toLowerCase() || blogUrl.toLowerCase().replace(/\/$/, '') === password.toLowerCase())) {
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validationResult.isValid = false;
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}
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// dissallow passwords where 50% or more of characters are the same
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if (!characterOccurance(password)) {
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validationResult.isValid = false;
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}
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// Generic error message for the rules where no dedicated error massage is set
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if (!validationResult.isValid && !validationResult.message) {
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validationResult.message = common.i18n.t('errors.models.user.passwordDoesNotComplySecurity');
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}
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return validationResult;
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};
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// Validation against schema attributes
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// values are checked against the validation objects from schema.js
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validateSchema = function validateSchema(tableName, model) {
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var columns = _.keys(schema[tableName]),
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validationErrors = [];
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_.each(columns, function each(columnKey) {
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var message = '',
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strVal = _.toString(model[columnKey]);
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// check nullable
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if (model.hasOwnProperty(columnKey) && schema[tableName][columnKey].hasOwnProperty('nullable')
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&& schema[tableName][columnKey].nullable !== true) {
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if (validator.empty(strVal)) {
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message = common.i18n.t('notices.data.validation.index.valueCannotBeBlank', {
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tableName: tableName,
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columnKey: columnKey
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});
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validationErrors.push(new common.errors.ValidationError({
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message: message,
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context: tableName + '.' + columnKey
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}));
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}
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}
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// validate boolean columns
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if (model.hasOwnProperty(columnKey) && schema[tableName][columnKey].hasOwnProperty('type')
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&& schema[tableName][columnKey].type === 'bool') {
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if (!(validator.isBoolean(strVal) || validator.empty(strVal))) {
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message = common.i18n.t('notices.data.validation.index.valueMustBeBoolean', {
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tableName: tableName,
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columnKey: columnKey
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});
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validationErrors.push(new common.errors.ValidationError({
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message: message,
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context: tableName + '.' + columnKey
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}));
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}
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}
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// TODO: check if mandatory values should be enforced
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if (model[columnKey] !== null && model[columnKey] !== undefined) {
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// check length
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if (schema[tableName][columnKey].hasOwnProperty('maxlength')) {
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if (!validator.isLength(strVal, 0, schema[tableName][columnKey].maxlength)) {
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message = common.i18n.t('notices.data.validation.index.valueExceedsMaxLength',
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{
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tableName: tableName,
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columnKey: columnKey,
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maxlength: schema[tableName][columnKey].maxlength
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});
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validationErrors.push(new common.errors.ValidationError({
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message: message,
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context: tableName + '.' + columnKey
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}));
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}
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}
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// check validations objects
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if (schema[tableName][columnKey].hasOwnProperty('validations')) {
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validationErrors = validationErrors.concat(validate(strVal, columnKey, schema[tableName][columnKey].validations, tableName));
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}
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// check type
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if (schema[tableName][columnKey].hasOwnProperty('type')) {
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if (schema[tableName][columnKey].type === 'integer' && !validator.isInt(strVal)) {
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message = common.i18n.t('notices.data.validation.index.valueIsNotInteger', {
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tableName: tableName,
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columnKey: columnKey
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});
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validationErrors.push(new common.errors.ValidationError({
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message: message,
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context: tableName + '.' + columnKey
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}));
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}
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}
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}
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});
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if (validationErrors.length !== 0) {
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return Promise.reject(validationErrors);
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}
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return Promise.resolve();
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};
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// Validation for settings
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// settings are checked against the validation objects
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// form default-settings.json
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validateSettings = function validateSettings(defaultSettings, model) {
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var values = model.toJSON(),
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validationErrors = [],
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matchingDefault = defaultSettings[values.key];
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if (matchingDefault && matchingDefault.validations) {
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validationErrors = validationErrors.concat(validate(values.value, values.key, matchingDefault.validations, 'settings'));
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}
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if (validationErrors.length !== 0) {
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return Promise.reject(validationErrors);
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}
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return Promise.resolve();
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};
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/**
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* Validate keys using the validator module.
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* Each validation's key is a method name and its value is an array of options
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* eg:
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* validations: { isURL: true, isLength: [20, 40] }
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* will validate that a values's length is a URL between 20 and 40 chars.
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*
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* If you pass a boolean as the value, it will specify the "good" result. By default
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* the "good" result is assumed to be true.
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* eg:
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* validations: { isNull: false } // means the "good" result would
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* // fail the `isNull` check, so
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* // not null.
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*
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* available validators: https://github.com/chriso/validator.js#validators
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* @param {String} value the value to validate.
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* @param {String} key the db column key of the value to validate.
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* @param {Object} validations the validations object as described above.
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* @param {String} tableName (optional) the db table of the value to validate, used for error message.
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* @return {Array} returns an Array including the found validation errors (empty if none found);
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*/
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validate = function validate(value, key, validations, tableName) {
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var validationErrors = [], translation;
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value = _.toString(value);
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_.each(validations, function each(validationOptions, validationName) {
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var goodResult = true;
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if (_.isBoolean(validationOptions)) {
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goodResult = validationOptions;
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validationOptions = [];
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} else if (!_.isArray(validationOptions)) {
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validationOptions = [validationOptions];
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}
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validationOptions.unshift(value);
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// equivalent of validator.isSomething(option1, option2)
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if (validator[validationName].apply(validator, validationOptions) !== goodResult) {
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// CASE: You can define specific translations for validators e.g. isLength
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if (common.i18n.doesTranslationKeyExist('notices.data.validation.index.validationFailedTypes.' + validationName)) {
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translation = common.i18n.t('notices.data.validation.index.validationFailedTypes.' + validationName, _.merge({
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validationName: validationName,
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key: key,
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tableName: tableName
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}, validationOptions[1]));
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} else {
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translation = common.i18n.t('notices.data.validation.index.validationFailed', {
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validationName: validationName,
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key: key
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});
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}
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validationErrors.push(new common.errors.ValidationError({
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message: translation
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}));
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}
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validationOptions.shift();
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}, this);
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return validationErrors;
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};
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/**
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* Redirects are file based at the moment, but they will live in the database in the future.
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* See V2 of https://github.com/TryGhost/Ghost/issues/7707.
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*/
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validateRedirects = function validateRedirects(redirects) {
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if (!_.isArray(redirects)) {
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throw new common.errors.ValidationError({
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message: common.i18n.t('errors.utils.redirectsWrongFormat'),
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help: 'https://docs.ghost.org/docs/redirects'
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});
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}
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_.each(redirects, function (redirect) {
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if (!redirect.from || !redirect.to) {
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throw new common.errors.ValidationError({
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message: common.i18n.t('errors.utils.redirectsWrongFormat'),
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context: JSON.stringify(redirect),
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help: 'https://docs.ghost.org/docs/redirects'
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});
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}
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});
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};
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module.exports = {
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validate: validate,
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validator: validator,
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validatePassword: validatePassword,
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validateSchema: validateSchema,
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validateSettings: validateSettings,
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validateRedirects: validateRedirects
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};
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