143 lines
4.0 KiB
JavaScript
143 lines
4.0 KiB
JavaScript
/**
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* @fileoverview Prevent usage of `javascript:` URLs
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* @author Sergei Startsev
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*/
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'use strict';
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const includes = require('array-includes');
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const docsUrl = require('../util/docsUrl');
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const linkComponentsUtil = require('../util/linkComponents');
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const report = require('../util/report');
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// ------------------------------------------------------------------------------
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// Rule Definition
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// ------------------------------------------------------------------------------
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// https://github.com/facebook/react/blob/d0ebde77f6d1232cefc0da184d731943d78e86f2/packages/react-dom/src/shared/sanitizeURL.js#L30
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/* eslint-disable-next-line max-len, no-control-regex */
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const isJavaScriptProtocol = /^[\u0000-\u001F ]*j[\r\n\t]*a[\r\n\t]*v[\r\n\t]*a[\r\n\t]*s[\r\n\t]*c[\r\n\t]*r[\r\n\t]*i[\r\n\t]*p[\r\n\t]*t[\r\n\t]*:/i;
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function hasJavaScriptProtocol(attr) {
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return attr.value && attr.value.type === 'Literal'
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&& isJavaScriptProtocol.test(attr.value.value);
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}
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function shouldVerifyProp(node, config) {
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const name = node.name && node.name.name;
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const parentName = node.parent.name && node.parent.name.name;
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if (!name || !parentName || !config.has(parentName)) return false;
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const attributes = config.get(parentName);
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return includes(attributes, name);
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}
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function parseLegacyOption(config, option) {
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option.forEach((opt) => {
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config.set(opt.name, opt.props);
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});
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}
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const messages = {
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noScriptURL: 'A future version of React will block javascript: URLs as a security precaution. Use event handlers instead if you can. If you need to generate unsafe HTML, try using dangerouslySetInnerHTML instead.',
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};
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module.exports = {
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meta: {
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docs: {
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description: 'Disallow usage of `javascript:` URLs',
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category: 'Best Practices',
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recommended: false,
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url: docsUrl('jsx-no-script-url'),
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},
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messages,
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schema: {
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anyOf: [
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{
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type: 'array',
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items: [
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{
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type: 'array',
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uniqueItems: true,
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items: {
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type: 'object',
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properties: {
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name: {
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type: 'string',
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},
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props: {
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type: 'array',
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items: {
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type: 'string',
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uniqueItems: true,
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},
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},
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},
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required: ['name', 'props'],
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additionalProperties: false,
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},
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},
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{
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type: 'object',
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properties: {
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includeFromSettings: {
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type: 'boolean',
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},
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},
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additionalItems: false,
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},
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],
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additionalItems: false,
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},
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{
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type: 'array',
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items: [
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{
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type: 'object',
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properties: {
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includeFromSettings: {
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type: 'boolean',
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},
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},
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additionalItems: false,
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},
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],
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additionalItems: false,
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},
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],
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},
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},
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create(context) {
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const options = context.options;
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const hasLegacyOption = Array.isArray(options[0]);
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const legacyOptions = hasLegacyOption ? options[0] : [];
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// eslint-disable-next-line no-nested-ternary
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const objectOption = (hasLegacyOption && options.length > 1)
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? options[1]
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: (options.length > 0
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? options[0]
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: {
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includeFromSettings: false,
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}
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);
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const includeFromSettings = objectOption.includeFromSettings;
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const linkComponents = linkComponentsUtil.getLinkComponents(includeFromSettings ? context : {});
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parseLegacyOption(linkComponents, legacyOptions);
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return {
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JSXAttribute(node) {
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if (shouldVerifyProp(node, linkComponents) && hasJavaScriptProtocol(node)) {
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report(context, messages.noScriptURL, 'noScriptURL', {
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node,
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});
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}
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},
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};
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},
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};
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