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(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
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/**
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* default settings
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*
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* @author Zongmin Lei<leizongmin@gmail.com>
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*/
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var FilterCSS = require("cssfilter").FilterCSS;
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var getDefaultCSSWhiteList = require("cssfilter").getDefaultWhiteList;
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var _ = require("./util");
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function getDefaultWhiteList() {
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return {
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a: ["target", "href", "title"],
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abbr: ["title"],
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address: [],
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area: ["shape", "coords", "href", "alt"],
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article: [],
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aside: [],
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audio: [
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"autoplay",
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"controls",
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"crossorigin",
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"loop",
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"muted",
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"preload",
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"src",
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],
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b: [],
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bdi: ["dir"],
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bdo: ["dir"],
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big: [],
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blockquote: ["cite"],
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br: [],
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caption: [],
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center: [],
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cite: [],
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code: [],
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col: ["align", "valign", "span", "width"],
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colgroup: ["align", "valign", "span", "width"],
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dd: [],
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del: ["datetime"],
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details: ["open"],
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div: [],
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dl: [],
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dt: [],
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em: [],
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figcaption: [],
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figure: [],
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font: ["color", "size", "face"],
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footer: [],
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h1: [],
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h2: [],
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h3: [],
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h4: [],
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h5: [],
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h6: [],
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header: [],
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hr: [],
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i: [],
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img: ["src", "alt", "title", "width", "height"],
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ins: ["datetime"],
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li: [],
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mark: [],
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nav: [],
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ol: [],
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p: [],
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pre: [],
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s: [],
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section: [],
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small: [],
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span: [],
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sub: [],
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summary: [],
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sup: [],
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strong: [],
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strike: [],
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table: ["width", "border", "align", "valign"],
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tbody: ["align", "valign"],
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td: ["width", "rowspan", "colspan", "align", "valign"],
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tfoot: ["align", "valign"],
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th: ["width", "rowspan", "colspan", "align", "valign"],
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thead: ["align", "valign"],
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tr: ["rowspan", "align", "valign"],
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tt: [],
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u: [],
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ul: [],
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video: [
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"autoplay",
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"controls",
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"crossorigin",
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"loop",
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"muted",
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"playsinline",
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"poster",
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"preload",
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"src",
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"height",
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"width",
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],
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};
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}
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var defaultCSSFilter = new FilterCSS();
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/**
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* default onTag function
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*
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* @param {String} tag
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* @param {String} html
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* @param {Object} options
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* @return {String}
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*/
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function onTag(tag, html, options) {
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// do nothing
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}
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/**
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* default onIgnoreTag function
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*
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* @param {String} tag
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* @param {String} html
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* @param {Object} options
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* @return {String}
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*/
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function onIgnoreTag(tag, html, options) {
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// do nothing
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}
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/**
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* default onTagAttr function
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*
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* @param {String} tag
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* @param {String} name
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* @param {String} value
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* @return {String}
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*/
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function onTagAttr(tag, name, value) {
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// do nothing
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}
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/**
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* default onIgnoreTagAttr function
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*
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* @param {String} tag
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* @param {String} name
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* @param {String} value
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* @return {String}
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*/
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function onIgnoreTagAttr(tag, name, value) {
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// do nothing
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}
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/**
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* default escapeHtml function
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*
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* @param {String} html
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*/
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function escapeHtml(html) {
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return html.replace(REGEXP_LT, "<").replace(REGEXP_GT, ">");
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}
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/**
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* default safeAttrValue function
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*
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* @param {String} tag
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* @param {String} name
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* @param {String} value
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* @param {Object} cssFilter
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* @return {String}
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*/
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function safeAttrValue(tag, name, value, cssFilter) {
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// unescape attribute value firstly
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value = friendlyAttrValue(value);
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if (name === "href" || name === "src") {
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// filter `href` and `src` attribute
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// only allow the value that starts with `http://` | `https://` | `mailto:` | `/` | `#`
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value = _.trim(value);
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if (value === "#") return "#";
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if (
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!(
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value.substr(0, 7) === "http://" ||
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value.substr(0, 8) === "https://" ||
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value.substr(0, 7) === "mailto:" ||
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value.substr(0, 4) === "tel:" ||
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value.substr(0, 11) === "data:image/" ||
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value.substr(0, 6) === "ftp://" ||
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value.substr(0, 2) === "./" ||
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value.substr(0, 3) === "../" ||
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value[0] === "#" ||
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value[0] === "/"
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)
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) {
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return "";
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}
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} else if (name === "background") {
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// filter `background` attribute (maybe no use)
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// `javascript:`
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REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
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if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
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return "";
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}
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} else if (name === "style") {
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// `expression()`
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REGEXP_DEFAULT_ON_TAG_ATTR_7.lastIndex = 0;
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if (REGEXP_DEFAULT_ON_TAG_ATTR_7.test(value)) {
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return "";
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}
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// `url()`
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REGEXP_DEFAULT_ON_TAG_ATTR_8.lastIndex = 0;
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if (REGEXP_DEFAULT_ON_TAG_ATTR_8.test(value)) {
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REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
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if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
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return "";
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}
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}
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if (cssFilter !== false) {
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cssFilter = cssFilter || defaultCSSFilter;
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value = cssFilter.process(value);
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}
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}
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// escape `<>"` before returns
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value = escapeAttrValue(value);
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return value;
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}
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// RegExp list
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var REGEXP_LT = /</g;
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var REGEXP_GT = />/g;
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var REGEXP_QUOTE = /"/g;
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var REGEXP_QUOTE_2 = /"/g;
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var REGEXP_ATTR_VALUE_1 = /&#([a-zA-Z0-9]*);?/gim;
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var REGEXP_ATTR_VALUE_COLON = /:?/gim;
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var REGEXP_ATTR_VALUE_NEWLINE = /&newline;?/gim;
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// var REGEXP_DEFAULT_ON_TAG_ATTR_3 = /\/\*|\*\//gm;
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var REGEXP_DEFAULT_ON_TAG_ATTR_4 =
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/((j\s*a\s*v\s*a|v\s*b|l\s*i\s*v\s*e)\s*s\s*c\s*r\s*i\s*p\s*t\s*|m\s*o\s*c\s*h\s*a):/gi;
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// var REGEXP_DEFAULT_ON_TAG_ATTR_5 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:/gi;
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// var REGEXP_DEFAULT_ON_TAG_ATTR_6 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:\s*image\//gi;
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var REGEXP_DEFAULT_ON_TAG_ATTR_7 =
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/e\s*x\s*p\s*r\s*e\s*s\s*s\s*i\s*o\s*n\s*\(.*/gi;
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var REGEXP_DEFAULT_ON_TAG_ATTR_8 = /u\s*r\s*l\s*\(.*/gi;
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/**
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* escape double quote
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*
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* @param {String} str
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* @return {String} str
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*/
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function escapeQuote(str) {
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return str.replace(REGEXP_QUOTE, """);
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}
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/**
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* unescape double quote
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*
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* @param {String} str
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* @return {String} str
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*/
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function unescapeQuote(str) {
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return str.replace(REGEXP_QUOTE_2, '"');
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}
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/**
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* escape html entities
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*
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* @param {String} str
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* @return {String}
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*/
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function escapeHtmlEntities(str) {
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return str.replace(REGEXP_ATTR_VALUE_1, function replaceUnicode(str, code) {
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return code[0] === "x" || code[0] === "X"
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? String.fromCharCode(parseInt(code.substr(1), 16))
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: String.fromCharCode(parseInt(code, 10));
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});
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}
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/**
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* escape html5 new danger entities
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*
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* @param {String} str
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* @return {String}
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*/
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function escapeDangerHtml5Entities(str) {
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return str
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.replace(REGEXP_ATTR_VALUE_COLON, ":")
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.replace(REGEXP_ATTR_VALUE_NEWLINE, " ");
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}
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/**
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* clear nonprintable characters
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*
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* @param {String} str
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* @return {String}
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*/
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function clearNonPrintableCharacter(str) {
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var str2 = "";
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for (var i = 0, len = str.length; i < len; i++) {
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str2 += str.charCodeAt(i) < 32 ? " " : str.charAt(i);
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}
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return _.trim(str2);
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}
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/**
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* get friendly attribute value
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*
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* @param {String} str
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* @return {String}
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*/
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function friendlyAttrValue(str) {
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str = unescapeQuote(str);
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str = escapeHtmlEntities(str);
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str = escapeDangerHtml5Entities(str);
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str = clearNonPrintableCharacter(str);
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return str;
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}
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/**
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* unescape attribute value
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*
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* @param {String} str
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* @return {String}
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*/
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function escapeAttrValue(str) {
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str = escapeQuote(str);
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str = escapeHtml(str);
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return str;
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}
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/**
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* `onIgnoreTag` function for removing all the tags that are not in whitelist
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*/
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function onIgnoreTagStripAll() {
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return "";
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}
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/**
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* remove tag body
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* specify a `tags` list, if the tag is not in the `tags` list then process by the specify function (optional)
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*
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* @param {array} tags
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* @param {function} next
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*/
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function StripTagBody(tags, next) {
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if (typeof next !== "function") {
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next = function () {};
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}
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var isRemoveAllTag = !Array.isArray(tags);
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function isRemoveTag(tag) {
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if (isRemoveAllTag) return true;
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return _.indexOf(tags, tag) !== -1;
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}
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var removeList = [];
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var posStart = false;
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return {
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onIgnoreTag: function (tag, html, options) {
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if (isRemoveTag(tag)) {
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if (options.isClosing) {
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var ret = "[/removed]";
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var end = options.position + ret.length;
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removeList.push([
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posStart !== false ? posStart : options.position,
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end,
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]);
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posStart = false;
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return ret;
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} else {
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if (!posStart) {
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posStart = options.position;
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}
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return "[removed]";
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}
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} else {
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return next(tag, html, options);
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}
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},
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remove: function (html) {
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var rethtml = "";
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var lastPos = 0;
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_.forEach(removeList, function (pos) {
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rethtml += html.slice(lastPos, pos[0]);
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lastPos = pos[1];
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});
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rethtml += html.slice(lastPos);
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return rethtml;
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},
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};
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}
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|
/**
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* remove html comments
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*
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* @param {String} html
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* @return {String}
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*/
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function stripCommentTag(html) {
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var retHtml = "";
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var lastPos = 0;
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while (lastPos < html.length) {
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var i = html.indexOf("<!--", lastPos);
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if (i === -1) {
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retHtml += html.slice(lastPos);
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break;
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}
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retHtml += html.slice(lastPos, i);
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var j = html.indexOf("-->", i);
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if (j === -1) {
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break;
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}
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lastPos = j + 3;
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}
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return retHtml;
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}
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|
|
/**
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|
|
* remove invisible characters
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|
|
*
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|
* @param {String} html
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* @return {String}
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*/
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function stripBlankChar(html) {
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|
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var chars = html.split("");
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|
chars = chars.filter(function (char) {
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|
var c = char.charCodeAt(0);
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|
|
if (c === 127) return false;
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|
|
if (c <= 31) {
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|
if (c === 10 || c === 13) return true;
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|
|
return false;
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|
}
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|
|
return true;
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|
|
});
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|
|
return chars.join("");
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|
}
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|
|
exports.whiteList = getDefaultWhiteList();
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|
|
exports.getDefaultWhiteList = getDefaultWhiteList;
|
|
|
exports.onTag = onTag;
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|
|
exports.onIgnoreTag = onIgnoreTag;
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|
|
exports.onTagAttr = onTagAttr;
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|
|
exports.onIgnoreTagAttr = onIgnoreTagAttr;
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|
exports.safeAttrValue = safeAttrValue;
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|
exports.escapeHtml = escapeHtml;
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|
exports.escapeQuote = escapeQuote;
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|
|
exports.unescapeQuote = unescapeQuote;
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|
exports.escapeHtmlEntities = escapeHtmlEntities;
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|
|
exports.escapeDangerHtml5Entities = escapeDangerHtml5Entities;
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|
|
exports.clearNonPrintableCharacter = clearNonPrintableCharacter;
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|
|
exports.friendlyAttrValue = friendlyAttrValue;
|
|
|
exports.escapeAttrValue = escapeAttrValue;
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|
|
exports.onIgnoreTagStripAll = onIgnoreTagStripAll;
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|
|
exports.StripTagBody = StripTagBody;
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exports.stripCommentTag = stripCommentTag;
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|
|
exports.stripBlankChar = stripBlankChar;
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|
|
exports.cssFilter = defaultCSSFilter;
|
|
|
exports.getDefaultCSSWhiteList = getDefaultCSSWhiteList;
|
|
|
|
|
|
},{"./util":4,"cssfilter":8}],2:[function(require,module,exports){
|
|
|
/**
|
|
|
* xss
|
|
|
*
|
|
|
* @author Zongmin Lei<leizongmin@gmail.com>
|
|
|
*/
|
|
|
|
|
|
var DEFAULT = require("./default");
|
|
|
var parser = require("./parser");
|
|
|
var FilterXSS = require("./xss");
|
|
|
|
|
|
/**
|
|
|
* filter xss function
|
|
|
*
|
|
|
* @param {String} html
|
|
|
* @param {Object} options { whiteList, onTag, onTagAttr, onIgnoreTag, onIgnoreTagAttr, safeAttrValue, escapeHtml }
|
|
|
* @return {String}
|
|
|
*/
|
|
|
function filterXSS(html, options) {
|
|
|
var xss = new FilterXSS(options);
|
|
|
return xss.process(html);
|
|
|
}
|
|
|
|
|
|
exports = module.exports = filterXSS;
|
|
|
exports.filterXSS = filterXSS;
|
|
|
exports.FilterXSS = FilterXSS;
|
|
|
|
|
|
(function () {
|
|
|
for (var i in DEFAULT) {
|
|
|
exports[i] = DEFAULT[i];
|
|
|
}
|
|
|
for (var j in parser) {
|
|
|
exports[j] = parser[j];
|
|
|
}
|
|
|
})();
|
|
|
|
|
|
// using `xss` on the browser, output `filterXSS` to the globals
|
|
|
if (typeof window !== "undefined") {
|
|
|
window.filterXSS = module.exports;
|
|
|
}
|
|
|
|
|
|
// using `xss` on the WebWorker, output `filterXSS` to the globals
|
|
|
function isWorkerEnv() {
|
|
|
return (
|
|
|
typeof self !== "undefined" &&
|
|
|
typeof DedicatedWorkerGlobalScope !== "undefined" &&
|
|
|
self instanceof DedicatedWorkerGlobalScope
|
|
|
);
|
|
|
}
|
|
|
if (isWorkerEnv()) {
|
|
|
self.filterXSS = module.exports;
|
|
|
}
|
|
|
|
|
|
},{"./default":1,"./parser":3,"./xss":5}],3:[function(require,module,exports){
|
|
|
/**
|
|
|
* Simple HTML Parser
|
|
|
*
|
|
|
* @author Zongmin Lei<leizongmin@gmail.com>
|
|
|
*/
|
|
|
|
|
|
var _ = require("./util");
|
|
|
|
|
|
/**
|
|
|
* get tag name
|
|
|
*
|
|
|
* @param {String} html e.g. '<a hef="#">'
|
|
|
* @return {String}
|
|
|
*/
|
|
|
function getTagName(html) {
|
|
|
var i = _.spaceIndex(html);
|
|
|
var tagName;
|
|
|
if (i === -1) {
|
|
|
tagName = html.slice(1, -1);
|
|
|
} else {
|
|
|
tagName = html.slice(1, i + 1);
|
|
|
}
|
|
|
tagName = _.trim(tagName).toLowerCase();
|
|
|
if (tagName.slice(0, 1) === "/") tagName = tagName.slice(1);
|
|
|
if (tagName.slice(-1) === "/") tagName = tagName.slice(0, -1);
|
|
|
return tagName;
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* is close tag?
|
|
|
*
|
|
|
* @param {String} html 如：'<a hef="#">'
|
|
|
* @return {Boolean}
|
|
|
*/
|
|
|
function isClosing(html) {
|
|
|
return html.slice(0, 2) === "</";
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* parse input html and returns processed html
|
|
|
*
|
|
|
* @param {String} html
|
|
|
* @param {Function} onTag e.g. function (sourcePosition, position, tag, html, isClosing)
|
|
|
* @param {Function} escapeHtml
|
|
|
* @return {String}
|
|
|
*/
|
|
|
function parseTag(html, onTag, escapeHtml) {
|
|
|
"use strict";
|
|
|
|
|
|
var rethtml = "";
|
|
|
var lastPos = 0;
|
|
|
var tagStart = false;
|
|
|
var quoteStart = false;
|
|
|
var currentPos = 0;
|
|
|
var len = html.length;
|
|
|
var currentTagName = "";
|
|
|
var currentHtml = "";
|
|
|
|
|
|
chariterator: for (currentPos = 0; currentPos < len; currentPos++) {
|
|
|
var c = html.charAt(currentPos);
|
|
|
if (tagStart === false) {
|
|
|
if (c === "<") {
|
|
|
tagStart = currentPos;
|
|
|
continue;
|
|
|
}
|
|
|
} else {
|
|
|
if (quoteStart === false) {
|
|
|
if (c === "<") {
|
|
|
rethtml += escapeHtml(html.slice(lastPos, currentPos));
|
|
|
tagStart = currentPos;
|
|
|
lastPos = currentPos;
|
|
|
continue;
|
|
|
}
|
|
|
if (c === ">" || currentPos === len - 1) {
|
|
|
rethtml += escapeHtml(html.slice(lastPos, tagStart));
|
|
|
currentHtml = html.slice(tagStart, currentPos + 1);
|
|
|
currentTagName = getTagName(currentHtml);
|
|
|
rethtml += onTag(
|
|
|
tagStart,
|
|
|
rethtml.length,
|
|
|
currentTagName,
|
|
|
currentHtml,
|
|
|
isClosing(currentHtml)
|
|
|
);
|
|
|
lastPos = currentPos + 1;
|
|
|
tagStart = false;
|
|
|
continue;
|
|
|
}
|
|
|
if (c === '"' || c === "'") {
|
|
|
var i = 1;
|
|
|
var ic = html.charAt(currentPos - i);
|
|
|
|
|
|
while (ic.trim() === "" || ic === "=") {
|
|
|
if (ic === "=") {
|
|
|
quoteStart = c;
|
|
|
continue chariterator;
|
|
|
}
|
|
|
ic = html.charAt(currentPos - ++i);
|
|
|
}
|
|
|
}
|
|
|
} else {
|
|
|
if (c === quoteStart) {
|
|
|
quoteStart = false;
|
|
|
continue;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
if (lastPos < len) {
|
|
|
rethtml += escapeHtml(html.substr(lastPos));
|
|
|
}
|
|
|
|
|
|
return rethtml;
|
|
|
}
|
|
|
|
|
|
var REGEXP_ILLEGAL_ATTR_NAME = /[^a-zA-Z0-9\\_:.-]/gim;
|
|
|
|
|
|
/**
|
|
|
* parse input attributes and returns processed attributes
|
|
|
*
|
|
|
* @param {String} html e.g. `href="#" target="_blank"`
|
|
|
* @param {Function} onAttr e.g. `function (name, value)`
|
|
|
* @return {String}
|
|
|
*/
|
|
|
function parseAttr(html, onAttr) {
|
|
|
"use strict";
|
|
|
|
|
|
var lastPos = 0;
|
|
|
var lastMarkPos = 0;
|
|
|
var retAttrs = [];
|
|
|
var tmpName = false;
|
|
|
var len = html.length;
|
|
|
|
|
|
function addAttr(name, value) {
|
|
|
name = _.trim(name);
|
|
|
name = name.replace(REGEXP_ILLEGAL_ATTR_NAME, "").toLowerCase();
|
|
|
if (name.length < 1) return;
|
|
|
var ret = onAttr(name, value || "");
|
|
|
if (ret) retAttrs.push(ret);
|
|
|
}
|
|
|
|
|
|
// 逐个分析字符
|
|
|
for (var i = 0; i < len; i++) {
|
|
|
var c = html.charAt(i);
|
|
|
var v, j;
|
|
|
if (tmpName === false && c === "=") {
|
|
|
tmpName = html.slice(lastPos, i);
|
|
|
lastPos = i + 1;
|
|
|
lastMarkPos = html.charAt(lastPos) === '"' || html.charAt(lastPos) === "'" ? lastPos : findNextQuotationMark(html, i + 1);
|
|
|
continue;
|
|
|
}
|
|
|
if (tmpName !== false) {
|
|
|
if (
|
|
|
i === lastMarkPos
|
|
|
) {
|
|
|
j = html.indexOf(c, i + 1);
|
|
|
if (j === -1) {
|
|
|
break;
|
|
|
} else {
|
|
|
v = _.trim(html.slice(lastMarkPos + 1, j));
|
|
|
addAttr(tmpName, v);
|
|
|
tmpName = false;
|
|
|
i = j;
|
|
|
lastPos = i + 1;
|
|
|
continue;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
if (/\s|\n|\t/.test(c)) {
|
|
|
html = html.replace(/\s|\n|\t/g, " ");
|
|
|
if (tmpName === false) {
|
|
|
j = findNextEqual(html, i);
|
|
|
if (j === -1) {
|
|
|
v = _.trim(html.slice(lastPos, i));
|
|
|
addAttr(v);
|
|
|
tmpName = false;
|
|
|
lastPos = i + 1;
|
|
|
continue;
|
|
|
} else {
|
|
|
i = j - 1;
|
|
|
continue;
|
|
|
}
|
|
|
} else {
|
|
|
j = findBeforeEqual(html, i - 1);
|
|
|
if (j === -1) {
|
|
|
v = _.trim(html.slice(lastPos, i));
|
|
|
v = stripQuoteWrap(v);
|
|
|
addAttr(tmpName, v);
|
|
|
tmpName = false;
|
|
|
lastPos = i + 1;
|
|
|
continue;
|
|
|
} else {
|
|
|
continue;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (lastPos < html.length) {
|
|
|
if (tmpName === false) {
|
|
|
addAttr(html.slice(lastPos));
|
|
|
} else {
|
|
|
addAttr(tmpName, stripQuoteWrap(_.trim(html.slice(lastPos))));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return _.trim(retAttrs.join(" "));
|
|
|
}
|
|
|
|
|
|
function findNextEqual(str, i) {
|
|
|
for (; i < str.length; i++) {
|
|
|
var c = str[i];
|
|
|
if (c === " ") continue;
|
|
|
if (c === "=") return i;
|
|
|
return -1;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
function findNextQuotationMark(str, i) {
|
|
|
for (; i < str.length; i++) {
|
|
|
var c = str[i];
|
|
|
if (c === " ") continue;
|
|
|
if (c === "'" || c === '"') return i;
|
|
|
return -1;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
function findBeforeEqual(str, i) {
|
|
|
for (; i > 0; i--) {
|
|
|
var c = str[i];
|
|
|
if (c === " ") continue;
|
|
|
if (c === "=") return i;
|
|
|
return -1;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
function isQuoteWrapString(text) {
|
|
|
if (
|
|
|
(text[0] === '"' && text[text.length - 1] === '"') ||
|
|
|
(text[0] === "'" && text[text.length - 1] === "'")
|
|
|
) {
|
|
|
return true;
|
|
|
} else {
|
|
|
return false;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
function stripQuoteWrap(text) {
|
|
|
if (isQuoteWrapString(text)) {
|
|
|
return text.substr(1, text.length - 2);
|
|
|
} else {
|
|
|
return text;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
exports.parseTag = parseTag;
|
|
|
exports.parseAttr = parseAttr;
|
|
|
|
|
|
},{"./util":4}],4:[function(require,module,exports){
|
|
|
module.exports = {
|
|
|
indexOf: function (arr, item) {
|
|
|
var i, j;
|
|
|
if (Array.prototype.indexOf) {
|
|
|
return arr.indexOf(item);
|
|
|
}
|
|
|
for (i = 0, j = arr.length; i < j; i++) {
|
|
|
if (arr[i] === item) {
|
|
|
return i;
|
|
|
}
|
|
|
}
|
|
|
return -1;
|
|
|
},
|
|
|
forEach: function (arr, fn, scope) {
|
|
|
var i, j;
|
|
|
if (Array.prototype.forEach) {
|
|
|
return arr.forEach(fn, scope);
|
|
|
}
|
|
|
for (i = 0, j = arr.length; i < j; i++) {
|
|
|
fn.call(scope, arr[i], i, arr);
|
|
|
}
|
|
|
},
|
|
|
trim: function (str) {
|
|
|
if (String.prototype.trim) {
|
|
|
return str.trim();
|
|
|
}
|
|
|
return str.replace(/(^\s*)|(\s*$)/g, "");
|
|
|
},
|
|
|
spaceIndex: function (str) {
|
|
|
var reg = /\s|\n|\t/;
|
|
|
var match = reg.exec(str);
|
|
|
return match ? match.index : -1;
|
|
|
},
|
|
|
};
|
|
|
|
|
|
},{}],5:[function(require,module,exports){
|
|
|
/**
|
|
|
* filter xss
|
|
|
*
|
|
|
* @author Zongmin Lei<leizongmin@gmail.com>
|
|
|
*/
|
|
|
|
|
|
var FilterCSS = require("cssfilter").FilterCSS;
|
|
|
var DEFAULT = require("./default");
|
|
|
var parser = require("./parser");
|
|
|
var parseTag = parser.parseTag;
|
|
|
var parseAttr = parser.parseAttr;
|
|
|
var _ = require("./util");
|
|
|
|
|
|
/**
|
|
|
* returns `true` if the input value is `undefined` or `null`
|
|
|
*
|
|
|
* @param {Object} obj
|
|
|
* @return {Boolean}
|
|
|
*/
|
|
|
function isNull(obj) {
|
|
|
return obj === undefined || obj === null;
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* get attributes for a tag
|
|
|
*
|
|
|
* @param {String} html
|
|
|
* @return {Object}
|
|
|
* - {String} html
|
|
|
* - {Boolean} closing
|
|
|
*/
|
|
|
function getAttrs(html) {
|
|
|
var i = _.spaceIndex(html);
|
|
|
if (i === -1) {
|
|
|
return {
|
|
|
html: "",
|
|
|
closing: html[html.length - 2] === "/",
|
|
|
};
|
|
|
}
|
|
|
html = _.trim(html.slice(i + 1, -1));
|
|
|
var isClosing = html[html.length - 1] === "/";
|
|
|
if (isClosing) html = _.trim(html.slice(0, -1));
|
|
|
return {
|
|
|
html: html,
|
|
|
closing: isClosing,
|
|
|
};
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* shallow copy
|
|
|
*
|
|
|
* @param {Object} obj
|
|
|
* @return {Object}
|
|
|
*/
|
|
|
function shallowCopyObject(obj) {
|
|
|
var ret = {};
|
|
|
for (var i in obj) {
|
|
|
ret[i] = obj[i];
|
|
|
}
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
function keysToLowerCase(obj) {
|
|
|
var ret = {};
|
|
|
for (var i in obj) {
|
|
|
if (Array.isArray(obj[i])) {
|
|
|
ret[i.toLowerCase()] = obj[i].map(function (item) {
|
|
|
return item.toLowerCase();
|
|
|
});
|
|
|
} else {
|
|
|
ret[i.toLowerCase()] = obj[i];
|
|
|
}
|
|
|
}
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* FilterXSS class
|
|
|
*
|
|
|
* @param {Object} options
|
|
|
* whiteList (or allowList), onTag, onTagAttr, onIgnoreTag,
|
|
|
* onIgnoreTagAttr, safeAttrValue, escapeHtml
|
|
|
* stripIgnoreTagBody, allowCommentTag, stripBlankChar
|
|
|
* css{whiteList, onAttr, onIgnoreAttr} `css=false` means don't use `cssfilter`
|
|
|
*/
|
|
|
function FilterXSS(options) {
|
|
|
options = shallowCopyObject(options || {});
|
|
|
|
|
|
if (options.stripIgnoreTag) {
|
|
|
if (options.onIgnoreTag) {
|
|
|
console.error(
|
|
|
'Notes: cannot use these two options "stripIgnoreTag" and "onIgnoreTag" at the same time'
|
|
|
);
|
|
|
}
|
|
|
options.onIgnoreTag = DEFAULT.onIgnoreTagStripAll;
|
|
|
}
|
|
|
if (options.whiteList || options.allowList) {
|
|
|
options.whiteList = keysToLowerCase(options.whiteList || options.allowList);
|
|
|
} else {
|
|
|
options.whiteList = DEFAULT.whiteList;
|
|
|
}
|
|
|
|
|
|
options.onTag = options.onTag || DEFAULT.onTag;
|
|
|
options.onTagAttr = options.onTagAttr || DEFAULT.onTagAttr;
|
|
|
options.onIgnoreTag = options.onIgnoreTag || DEFAULT.onIgnoreTag;
|
|
|
options.onIgnoreTagAttr = options.onIgnoreTagAttr || DEFAULT.onIgnoreTagAttr;
|
|
|
options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
|
|
|
options.escapeHtml = options.escapeHtml || DEFAULT.escapeHtml;
|
|
|
this.options = options;
|
|
|
|
|
|
if (options.css === false) {
|
|
|
this.cssFilter = false;
|
|
|
} else {
|
|
|
options.css = options.css || {};
|
|
|
this.cssFilter = new FilterCSS(options.css);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* start process and returns result
|
|
|
*
|
|
|
* @param {String} html
|
|
|
* @return {String}
|
|
|
*/
|
|
|
FilterXSS.prototype.process = function (html) {
|
|
|
// compatible with the input
|
|
|
html = html || "";
|
|
|
html = html.toString();
|
|
|
if (!html) return "";
|
|
|
|
|
|
var me = this;
|
|
|
var options = me.options;
|
|
|
var whiteList = options.whiteList;
|
|
|
var onTag = options.onTag;
|
|
|
var onIgnoreTag = options.onIgnoreTag;
|
|
|
var onTagAttr = options.onTagAttr;
|
|
|
var onIgnoreTagAttr = options.onIgnoreTagAttr;
|
|
|
var safeAttrValue = options.safeAttrValue;
|
|
|
var escapeHtml = options.escapeHtml;
|
|
|
var cssFilter = me.cssFilter;
|
|
|
|
|
|
// remove invisible characters
|
|
|
if (options.stripBlankChar) {
|
|
|
html = DEFAULT.stripBlankChar(html);
|
|
|
}
|
|
|
|
|
|
// remove html comments
|
|
|
if (!options.allowCommentTag) {
|
|
|
html = DEFAULT.stripCommentTag(html);
|
|
|
}
|
|
|
|
|
|
// if enable stripIgnoreTagBody
|
|
|
var stripIgnoreTagBody = false;
|
|
|
if (options.stripIgnoreTagBody) {
|
|
|
stripIgnoreTagBody = DEFAULT.StripTagBody(
|
|
|
options.stripIgnoreTagBody,
|
|
|
onIgnoreTag
|
|
|
);
|
|
|
onIgnoreTag = stripIgnoreTagBody.onIgnoreTag;
|
|
|
}
|
|
|
|
|
|
var retHtml = parseTag(
|
|
|
html,
|
|
|
function (sourcePosition, position, tag, html, isClosing) {
|
|
|
var info = {
|
|
|
sourcePosition: sourcePosition,
|
|
|
position: position,
|
|
|
isClosing: isClosing,
|
|
|
isWhite: Object.prototype.hasOwnProperty.call(whiteList, tag),
|
|
|
};
|
|
|
|
|
|
// call `onTag()`
|
|
|
var ret = onTag(tag, html, info);
|
|
|
if (!isNull(ret)) return ret;
|
|
|
|
|
|
if (info.isWhite) {
|
|
|
if (info.isClosing) {
|
|
|
return "</" + tag + ">";
|
|
|
}
|
|
|
|
|
|
var attrs = getAttrs(html);
|
|
|
var whiteAttrList = whiteList[tag];
|
|
|
var attrsHtml = parseAttr(attrs.html, function (name, value) {
|
|
|
// call `onTagAttr()`
|
|
|
var isWhiteAttr = _.indexOf(whiteAttrList, name) !== -1;
|
|
|
var ret = onTagAttr(tag, name, value, isWhiteAttr);
|
|
|
if (!isNull(ret)) return ret;
|
|
|
|
|
|
if (isWhiteAttr) {
|
|
|
// call `safeAttrValue()`
|
|
|
value = safeAttrValue(tag, name, value, cssFilter);
|
|
|
if (value) {
|
|
|
return name + '="' + value + '"';
|
|
|
} else {
|
|
|
return name;
|
|
|
}
|
|
|
} else {
|
|
|
// call `onIgnoreTagAttr()`
|
|
|
ret = onIgnoreTagAttr(tag, name, value, isWhiteAttr);
|
|
|
if (!isNull(ret)) return ret;
|
|
|
return;
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// build new tag html
|
|
|
html = "<" + tag;
|
|
|
if (attrsHtml) html += " " + attrsHtml;
|
|
|
if (attrs.closing) html += " /";
|
|
|
html += ">";
|
|
|
return html;
|
|
|
} else {
|
|
|
// call `onIgnoreTag()`
|
|
|
ret = onIgnoreTag(tag, html, info);
|
|
|
if (!isNull(ret)) return ret;
|
|
|
return escapeHtml(html);
|
|
|
}
|
|
|
},
|
|
|
escapeHtml
|
|
|
);
|
|
|
|
|
|
// if enable stripIgnoreTagBody
|
|
|
if (stripIgnoreTagBody) {
|
|
|
retHtml = stripIgnoreTagBody.remove(retHtml);
|
|
|
}
|
|
|
|
|
|
return retHtml;
|
|
|
};
|
|
|
|
|
|
module.exports = FilterXSS;
|
|
|
|
|
|
},{"./default":1,"./parser":3,"./util":4,"cssfilter":8}],6:[function(require,module,exports){
|
|
|
/**
|
|
|
* cssfilter
|
|
|
*
|
|
|
* @author 老雷<leizongmin@gmail.com>
|
|
|
*/
|
|
|
|
|
|
var DEFAULT = require('./default');
|
|
|
var parseStyle = require('./parser');
|
|
|
var _ = require('./util');
|
|
|
|
|
|
|
|
|
/**
|
|
|
* 返回值是否为空
|
|
|
*
|
|
|
* @param {Object} obj
|
|
|
* @return {Boolean}
|
|
|
*/
|
|
|
function isNull (obj) {
|
|
|
return (obj === undefined || obj === null);
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* 浅拷贝对象
|
|
|
*
|
|
|
* @param {Object} obj
|
|
|
* @return {Object}
|
|
|
*/
|
|
|
function shallowCopyObject (obj) {
|
|
|
var ret = {};
|
|
|
for (var i in obj) {
|
|
|
ret[i] = obj[i];
|
|
|
}
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* 创建CSS过滤器
|
|
|
*
|
|
|
* @param {Object} options
|
|
|
* - {Object} whiteList
|
|
|
* - {Function} onAttr
|
|
|
* - {Function} onIgnoreAttr
|
|
|
* - {Function} safeAttrValue
|
|
|
*/
|
|
|
function FilterCSS (options) {
|
|
|
options = shallowCopyObject(options || {});
|
|
|
options.whiteList = options.whiteList || DEFAULT.whiteList;
|
|
|
options.onAttr = options.onAttr || DEFAULT.onAttr;
|
|
|
options.onIgnoreAttr = options.onIgnoreAttr || DEFAULT.onIgnoreAttr;
|
|
|
options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
|
|
|
this.options = options;
|
|
|
}
|
|
|
|
|
|
FilterCSS.prototype.process = function (css) {
|
|
|
// 兼容各种奇葩输入
|
|
|
css = css || '';
|
|
|
css = css.toString();
|
|
|
if (!css) return '';
|
|
|
|
|
|
var me = this;
|
|
|
var options = me.options;
|
|
|
var whiteList = options.whiteList;
|
|
|
var onAttr = options.onAttr;
|
|
|
var onIgnoreAttr = options.onIgnoreAttr;
|
|
|
var safeAttrValue = options.safeAttrValue;
|
|
|
|
|
|
var retCSS = parseStyle(css, function (sourcePosition, position, name, value, source) {
|
|
|
|
|
|
var check = whiteList[name];
|
|
|
var isWhite = false;
|
|
|
if (check === true) isWhite = check;
|
|
|
else if (typeof check === 'function') isWhite = check(value);
|
|
|
else if (check instanceof RegExp) isWhite = check.test(value);
|
|
|
if (isWhite !== true) isWhite = false;
|
|
|
|
|
|
// 如果过滤后 value 为空则直接忽略
|
|
|
value = safeAttrValue(name, value);
|
|
|
if (!value) return;
|
|
|
|
|
|
var opts = {
|
|
|
position: position,
|
|
|
sourcePosition: sourcePosition,
|
|
|
source: source,
|
|
|
isWhite: isWhite
|
|
|
};
|
|
|
|
|
|
if (isWhite) {
|
|
|
|
|
|
var ret = onAttr(name, value, opts);
|
|
|
if (isNull(ret)) {
|
|
|
return name + ':' + value;
|
|
|
} else {
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
|
|
var ret = onIgnoreAttr(name, value, opts);
|
|
|
if (!isNull(ret)) {
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
}
|
|
|
});
|
|
|
|
|
|
return retCSS;
|
|
|
};
|
|
|
|
|
|
|
|
|
module.exports = FilterCSS;
|
|
|
|
|
|
},{"./default":7,"./parser":9,"./util":10}],7:[function(require,module,exports){
|
|
|
/**
|
|
|
* cssfilter
|
|
|
*
|
|
|
* @author 老雷<leizongmin@gmail.com>
|
|
|
*/
|
|
|
|
|
|
function getDefaultWhiteList () {
|
|
|
// 白名单值说明：
|
|
|
// true: 允许该属性
|
|
|
// Function: function (val) { } 返回true表示允许该属性，其他值均表示不允许
|
|
|
// RegExp: regexp.test(val) 返回true表示允许该属性，其他值均表示不允许
|
|
|
// 除上面列出的值外均表示不允许
|
|
|
var whiteList = {};
|
|
|
|
|
|
whiteList['align-content'] = false; // default: auto
|
|
|
whiteList['align-items'] = false; // default: auto
|
|
|
whiteList['align-self'] = false; // default: auto
|
|
|
whiteList['alignment-adjust'] = false; // default: auto
|
|
|
whiteList['alignment-baseline'] = false; // default: baseline
|
|
|
whiteList['all'] = false; // default: depending on individual properties
|
|
|
whiteList['anchor-point'] = false; // default: none
|
|
|
whiteList['animation'] = false; // default: depending on individual properties
|
|
|
whiteList['animation-delay'] = false; // default: 0
|
|
|
whiteList['animation-direction'] = false; // default: normal
|
|
|
whiteList['animation-duration'] = false; // default: 0
|
|
|
whiteList['animation-fill-mode'] = false; // default: none
|
|
|
whiteList['animation-iteration-count'] = false; // default: 1
|
|
|
whiteList['animation-name'] = false; // default: none
|
|
|
whiteList['animation-play-state'] = false; // default: running
|
|
|
whiteList['animation-timing-function'] = false; // default: ease
|
|
|
whiteList['azimuth'] = false; // default: center
|
|
|
whiteList['backface-visibility'] = false; // default: visible
|
|
|
whiteList['background'] = true; // default: depending on individual properties
|
|
|
whiteList['background-attachment'] = true; // default: scroll
|
|
|
whiteList['background-clip'] = true; // default: border-box
|
|
|
whiteList['background-color'] = true; // default: transparent
|
|
|
whiteList['background-image'] = true; // default: none
|
|
|
whiteList['background-origin'] = true; // default: padding-box
|
|
|
whiteList['background-position'] = true; // default: 0% 0%
|
|
|
whiteList['background-repeat'] = true; // default: repeat
|
|
|
whiteList['background-size'] = true; // default: auto
|
|
|
whiteList['baseline-shift'] = false; // default: baseline
|
|
|
whiteList['binding'] = false; // default: none
|
|
|
whiteList['bleed'] = false; // default: 6pt
|
|
|
whiteList['bookmark-label'] = false; // default: content()
|
|
|
whiteList['bookmark-level'] = false; // default: none
|
|
|
whiteList['bookmark-state'] = false; // default: open
|
|
|
whiteList['border'] = true; // default: depending on individual properties
|
|
|
whiteList['border-bottom'] = true; // default: depending on individual properties
|
|
|
whiteList['border-bottom-color'] = true; // default: current color
|
|
|
whiteList['border-bottom-left-radius'] = true; // default: 0
|
|
|
whiteList['border-bottom-right-radius'] = true; // default: 0
|
|
|
whiteList['border-bottom-style'] = true; // default: none
|
|
|
whiteList['border-bottom-width'] = true; // default: medium
|
|
|
whiteList['border-collapse'] = true; // default: separate
|
|
|
whiteList['border-color'] = true; // default: depending on individual properties
|
|
|
whiteList['border-image'] = true; // default: none
|
|
|
whiteList['border-image-outset'] = true; // default: 0
|
|
|
whiteList['border-image-repeat'] = true; // default: stretch
|
|
|
whiteList['border-image-slice'] = true; // default: 100%
|
|
|
whiteList['border-image-source'] = true; // default: none
|
|
|
whiteList['border-image-width'] = true; // default: 1
|
|
|
whiteList['border-left'] = true; // default: depending on individual properties
|
|
|
whiteList['border-left-color'] = true; // default: current color
|
|
|
whiteList['border-left-style'] = true; // default: none
|
|
|
whiteList['border-left-width'] = true; // default: medium
|
|
|
whiteList['border-radius'] = true; // default: 0
|
|
|
whiteList['border-right'] = true; // default: depending on individual properties
|
|
|
whiteList['border-right-color'] = true; // default: current color
|
|
|
whiteList['border-right-style'] = true; // default: none
|
|
|
whiteList['border-right-width'] = true; // default: medium
|
|
|
whiteList['border-spacing'] = true; // default: 0
|
|
|
whiteList['border-style'] = true; // default: depending on individual properties
|
|
|
whiteList['border-top'] = true; // default: depending on individual properties
|
|
|
whiteList['border-top-color'] = true; // default: current color
|
|
|
whiteList['border-top-left-radius'] = true; // default: 0
|
|
|
whiteList['border-top-right-radius'] = true; // default: 0
|
|
|
whiteList['border-top-style'] = true; // default: none
|
|
|
whiteList['border-top-width'] = true; // default: medium
|
|
|
whiteList['border-width'] = true; // default: depending on individual properties
|
|
|
whiteList['bottom'] = false; // default: auto
|
|
|
whiteList['box-decoration-break'] = true; // default: slice
|
|
|
whiteList['box-shadow'] = true; // default: none
|
|
|
whiteList['box-sizing'] = true; // default: content-box
|
|
|
whiteList['box-snap'] = true; // default: none
|
|
|
whiteList['box-suppress'] = true; // default: show
|
|
|
whiteList['break-after'] = true; // default: auto
|
|
|
whiteList['break-before'] = true; // default: auto
|
|
|
whiteList['break-inside'] = true; // default: auto
|
|
|
whiteList['caption-side'] = false; // default: top
|
|
|
whiteList['chains'] = false; // default: none
|
|
|
whiteList['clear'] = true; // default: none
|
|
|
whiteList['clip'] = false; // default: auto
|
|
|
whiteList['clip-path'] = false; // default: none
|
|
|
whiteList['clip-rule'] = false; // default: nonzero
|
|
|
whiteList['color'] = true; // default: implementation dependent
|
|
|
whiteList['color-interpolation-filters'] = true; // default: auto
|
|
|
whiteList['column-count'] = false; // default: auto
|
|
|
whiteList['column-fill'] = false; // default: balance
|
|
|
whiteList['column-gap'] = false; // default: normal
|
|
|
whiteList['column-rule'] = false; // default: depending on individual properties
|
|
|
whiteList['column-rule-color'] = false; // default: current color
|
|
|
whiteList['column-rule-style'] = false; // default: medium
|
|
|
whiteList['column-rule-width'] = false; // default: medium
|
|
|
whiteList['column-span'] = false; // default: none
|
|
|
whiteList['column-width'] = false; // default: auto
|
|
|
whiteList['columns'] = false; // default: depending on individual properties
|
|
|
whiteList['contain'] = false; // default: none
|
|
|
whiteList['content'] = false; // default: normal
|
|
|
whiteList['counter-increment'] = false; // default: none
|
|
|
whiteList['counter-reset'] = false; // default: none
|
|
|
whiteList['counter-set'] = false; // default: none
|
|
|
whiteList['crop'] = false; // default: auto
|
|
|
whiteList['cue'] = false; // default: depending on individual properties
|
|
|
whiteList['cue-after'] = false; // default: none
|
|
|
whiteList['cue-before'] = false; // default: none
|
|
|
whiteList['cursor'] = false; // default: auto
|
|
|
whiteList['direction'] = false; // default: ltr
|
|
|
whiteList['display'] = true; // default: depending on individual properties
|
|
|
whiteList['display-inside'] = true; // default: auto
|
|
|
whiteList['display-list'] = true; // default: none
|
|
|
whiteList['display-outside'] = true; // default: inline-level
|
|
|
whiteList['dominant-baseline'] = false; // default: auto
|
|
|
whiteList['elevation'] = false; // default: level
|
|
|
whiteList['empty-cells'] = false; // default: show
|
|
|
whiteList['filter'] = false; // default: none
|
|
|
whiteList['flex'] = false; // default: depending on individual properties
|
|
|
whiteList['flex-basis'] = false; // default: auto
|
|
|
whiteList['flex-direction'] = false; // default: row
|
|
|
whiteList['flex-flow'] = false; // default: depending on individual properties
|
|
|
whiteList['flex-grow'] = false; // default: 0
|
|
|
whiteList['flex-shrink'] = false; // default: 1
|
|
|
whiteList['flex-wrap'] = false; // default: nowrap
|
|
|
whiteList['float'] = false; // default: none
|
|
|
whiteList['float-offset'] = false; // default: 0 0
|
|
|
whiteList['flood-color'] = false; // default: black
|
|
|
whiteList['flood-opacity'] = false; // default: 1
|
|
|
whiteList['flow-from'] = false; // default: none
|
|
|
whiteList['flow-into'] = false; // default: none
|
|
|
whiteList['font'] = true; // default: depending on individual properties
|
|
|
whiteList['font-family'] = true; // default: implementation dependent
|
|
|
whiteList['font-feature-settings'] = true; // default: normal
|
|
|
whiteList['font-kerning'] = true; // default: auto
|
|
|
whiteList['font-language-override'] = true; // default: normal
|
|
|
whiteList['font-size'] = true; // default: medium
|
|
|
whiteList['font-size-adjust'] = true; // default: none
|
|
|
whiteList['font-stretch'] = true; // default: normal
|
|
|
whiteList['font-style'] = true; // default: normal
|
|
|
whiteList['font-synthesis'] = true; // default: weight style
|
|
|
whiteList['font-variant'] = true; // default: normal
|
|
|
whiteList['font-variant-alternates'] = true; // default: normal
|
|
|
whiteList['font-variant-caps'] = true; // default: normal
|
|
|
whiteList['font-variant-east-asian'] = true; // default: normal
|
|
|
whiteList['font-variant-ligatures'] = true; // default: normal
|
|
|
whiteList['font-variant-numeric'] = true; // default: normal
|
|
|
whiteList['font-variant-position'] = true; // default: normal
|
|
|
whiteList['font-weight'] = true; // default: normal
|
|
|
whiteList['grid'] = false; // default: depending on individual properties
|
|
|
whiteList['grid-area'] = false; // default: depending on individual properties
|
|
|
whiteList['grid-auto-columns'] = false; // default: auto
|
|
|
whiteList['grid-auto-flow'] = false; // default: none
|
|
|
whiteList['grid-auto-rows'] = false; // default: auto
|
|
|
whiteList['grid-column'] = false; // default: depending on individual properties
|
|
|
whiteList['grid-column-end'] = false; // default: auto
|
|
|
whiteList['grid-column-start'] = false; // default: auto
|
|
|
whiteList['grid-row'] = false; // default: depending on individual properties
|
|
|
whiteList['grid-row-end'] = false; // default: auto
|
|
|
whiteList['grid-row-start'] = false; // default: auto
|
|
|
whiteList['grid-template'] = false; // default: depending on individual properties
|
|
|
whiteList['grid-template-areas'] = false; // default: none
|
|
|
whiteList['grid-template-columns'] = false; // default: none
|
|
|
whiteList['grid-template-rows'] = false; // default: none
|
|
|
whiteList['hanging-punctuation'] = false; // default: none
|
|
|
whiteList['height'] = true; // default: auto
|
|
|
whiteList['hyphens'] = false; // default: manual
|
|
|
whiteList['icon'] = false; // default: auto
|
|
|
whiteList['image-orientation'] = false; // default: auto
|
|
|
whiteList['image-resolution'] = false; // default: normal
|
|
|
whiteList['ime-mode'] = false; // default: auto
|
|
|
whiteList['initial-letters'] = false; // default: normal
|
|
|
whiteList['inline-box-align'] = false; // default: last
|
|
|
whiteList['justify-content'] = false; // default: auto
|
|
|
whiteList['justify-items'] = false; // default: auto
|
|
|
whiteList['justify-self'] = false; // default: auto
|
|
|
whiteList['left'] = false; // default: auto
|
|
|
whiteList['letter-spacing'] = true; // default: normal
|
|
|
whiteList['lighting-color'] = true; // default: white
|
|
|
whiteList['line-box-contain'] = false; // default: block inline replaced
|
|
|
whiteList['line-break'] = false; // default: auto
|
|
|
whiteList['line-grid'] = false; // default: match-parent
|
|
|
whiteList['line-height'] = false; // default: normal
|
|
|
whiteList['line-snap'] = false; // default: none
|
|
|
whiteList['line-stacking'] = false; // default: depending on individual properties
|
|
|
whiteList['line-stacking-ruby'] = false; // default: exclude-ruby
|
|
|
whiteList['line-stacking-shift'] = false; // default: consider-shifts
|
|
|
whiteList['line-stacking-strategy'] = false; // default: inline-line-height
|
|
|
whiteList['list-style'] = true; // default: depending on individual properties
|
|
|
whiteList['list-style-image'] = true; // default: none
|
|
|
whiteList['list-style-position'] = true; // default: outside
|
|
|
whiteList['list-style-type'] = true; // default: disc
|
|
|
whiteList['margin'] = true; // default: depending on individual properties
|
|
|
whiteList['margin-bottom'] = true; // default: 0
|
|
|
whiteList['margin-left'] = true; // default: 0
|
|
|
whiteList['margin-right'] = true; // default: 0
|
|
|
whiteList['margin-top'] = true; // default: 0
|
|
|
whiteList['marker-offset'] = false; // default: auto
|
|
|
whiteList['marker-side'] = false; // default: list-item
|
|
|
whiteList['marks'] = false; // default: none
|
|
|
whiteList['mask'] = false; // default: border-box
|
|
|
whiteList['mask-box'] = false; // default: see individual properties
|
|
|
whiteList['mask-box-outset'] = false; // default: 0
|
|
|
whiteList['mask-box-repeat'] = false; // default: stretch
|
|
|
whiteList['mask-box-slice'] = false; // default: 0 fill
|
|
|
whiteList['mask-box-source'] = false; // default: none
|
|
|
whiteList['mask-box-width'] = false; // default: auto
|
|
|
whiteList['mask-clip'] = false; // default: border-box
|
|
|
whiteList['mask-image'] = false; // default: none
|
|
|
whiteList['mask-origin'] = false; // default: border-box
|
|
|
whiteList['mask-position'] = false; // default: center
|
|
|
whiteList['mask-repeat'] = false; // default: no-repeat
|
|
|
whiteList['mask-size'] = false; // default: border-box
|
|
|
whiteList['mask-source-type'] = false; // default: auto
|
|
|
whiteList['mask-type'] = false; // default: luminance
|
|
|
whiteList['max-height'] = true; // default: none
|
|
|
whiteList['max-lines'] = false; // default: none
|
|
|
whiteList['max-width'] = true; // default: none
|
|
|
whiteList['min-height'] = true; // default: 0
|
|
|
whiteList['min-width'] = true; // default: 0
|
|
|
whiteList['move-to'] = false; // default: normal
|
|
|
whiteList['nav-down'] = false; // default: auto
|
|
|
whiteList['nav-index'] = false; // default: auto
|
|
|
whiteList['nav-left'] = false; // default: auto
|
|
|
whiteList['nav-right'] = false; // default: auto
|
|
|
whiteList['nav-up'] = false; // default: auto
|
|
|
whiteList['object-fit'] = false; // default: fill
|
|
|
whiteList['object-position'] = false; // default: 50% 50%
|
|
|
whiteList['opacity'] = false; // default: 1
|
|
|
whiteList['order'] = false; // default: 0
|
|
|
whiteList['orphans'] = false; // default: 2
|
|
|
whiteList['outline'] = false; // default: depending on individual properties
|
|
|
whiteList['outline-color'] = false; // default: invert
|
|
|
whiteList['outline-offset'] = false; // default: 0
|
|
|
whiteList['outline-style'] = false; // default: none
|
|
|
whiteList['outline-width'] = false; // default: medium
|
|
|
whiteList['overflow'] = false; // default: depending on individual properties
|
|
|
whiteList['overflow-wrap'] = false; // default: normal
|
|
|
whiteList['overflow-x'] = false; // default: visible
|
|
|
whiteList['overflow-y'] = false; // default: visible
|
|
|
whiteList['padding'] = true; // default: depending on individual properties
|
|
|
whiteList['padding-bottom'] = true; // default: 0
|
|
|
whiteList['padding-left'] = true; // default: 0
|
|
|
whiteList['padding-right'] = true; // default: 0
|
|
|
whiteList['padding-top'] = true; // default: 0
|
|
|
whiteList['page'] = false; // default: auto
|
|
|
whiteList['page-break-after'] = false; // default: auto
|
|
|
whiteList['page-break-before'] = false; // default: auto
|
|
|
whiteList['page-break-inside'] = false; // default: auto
|
|
|
whiteList['page-policy'] = false; // default: start
|
|
|
whiteList['pause'] = false; // default: implementation dependent
|
|
|
whiteList['pause-after'] = false; // default: implementation dependent
|
|
|
whiteList['pause-before'] = false; // default: implementation dependent
|
|
|
whiteList['perspective'] = false; // default: none
|
|
|
whiteList['perspective-origin'] = false; // default: 50% 50%
|
|
|
whiteList['pitch'] = false; // default: medium
|
|
|
whiteList['pitch-range'] = false; // default: 50
|
|
|
whiteList['play-during'] = false; // default: auto
|
|
|
whiteList['position'] = false; // default: static
|
|
|
whiteList['presentation-level'] = false; // default: 0
|
|
|
whiteList['quotes'] = false; // default: text
|
|
|
whiteList['region-fragment'] = false; // default: auto
|
|
|
whiteList['resize'] = false; // default: none
|
|
|
whiteList['rest'] = false; // default: depending on individual properties
|
|
|
whiteList['rest-after'] = false; // default: none
|
|
|
whiteList['rest-before'] = false; // default: none
|
|
|
whiteList['richness'] = false; // default: 50
|
|
|
whiteList['right'] = false; // default: auto
|
|
|
whiteList['rotation'] = false; // default: 0
|
|
|
whiteList['rotation-point'] = false; // default: 50% 50%
|
|
|
whiteList['ruby-align'] = false; // default: auto
|
|
|
whiteList['ruby-merge'] = false; // default: separate
|
|
|
whiteList['ruby-position'] = false; // default: before
|
|
|
whiteList['shape-image-threshold'] = false; // default: 0.0
|
|
|
whiteList['shape-outside'] = false; // default: none
|
|
|
whiteList['shape-margin'] = false; // default: 0
|
|
|
whiteList['size'] = false; // default: auto
|
|
|
whiteList['speak'] = false; // default: auto
|
|
|
whiteList['speak-as'] = false; // default: normal
|
|
|
whiteList['speak-header'] = false; // default: once
|
|
|
whiteList['speak-numeral'] = false; // default: continuous
|
|
|
whiteList['speak-punctuation'] = false; // default: none
|
|
|
whiteList['speech-rate'] = false; // default: medium
|
|
|
whiteList['stress'] = false; // default: 50
|
|
|
whiteList['string-set'] = false; // default: none
|
|
|
whiteList['tab-size'] = false; // default: 8
|
|
|
whiteList['table-layout'] = false; // default: auto
|
|
|
whiteList['text-align'] = true; // default: start
|
|
|
whiteList['text-align-last'] = true; // default: auto
|
|
|
whiteList['text-combine-upright'] = true; // default: none
|
|
|
whiteList['text-decoration'] = true; // default: none
|
|
|
whiteList['text-decoration-color'] = true; // default: currentColor
|
|
|
whiteList['text-decoration-line'] = true; // default: none
|
|
|
whiteList['text-decoration-skip'] = true; // default: objects
|
|
|
whiteList['text-decoration-style'] = true; // default: solid
|
|
|
whiteList['text-emphasis'] = true; // default: depending on individual properties
|
|
|
whiteList['text-emphasis-color'] = true; // default: currentColor
|
|
|
whiteList['text-emphasis-position'] = true; // default: over right
|
|
|
whiteList['text-emphasis-style'] = true; // default: none
|
|
|
whiteList['text-height'] = true; // default: auto
|
|
|
whiteList['text-indent'] = true; // default: 0
|
|
|
whiteList['text-justify'] = true; // default: auto
|
|
|
whiteList['text-orientation'] = true; // default: mixed
|
|
|
whiteList['text-overflow'] = true; // default: clip
|
|
|
whiteList['text-shadow'] = true; // default: none
|
|
|
whiteList['text-space-collapse'] = true; // default: collapse
|
|
|
whiteList['text-transform'] = true; // default: none
|
|
|
whiteList['text-underline-position'] = true; // default: auto
|
|
|
whiteList['text-wrap'] = true; // default: normal
|
|
|
whiteList['top'] = false; // default: auto
|
|
|
whiteList['transform'] = false; // default: none
|
|
|
whiteList['transform-origin'] = false; // default: 50% 50% 0
|
|
|
whiteList['transform-style'] = false; // default: flat
|
|
|
whiteList['transition'] = false; // default: depending on individual properties
|
|
|
whiteList['transition-delay'] = false; // default: 0s
|
|
|
whiteList['transition-duration'] = false; // default: 0s
|
|
|
whiteList['transition-property'] = false; // default: all
|
|
|
whiteList['transition-timing-function'] = false; // default: ease
|
|
|
whiteList['unicode-bidi'] = false; // default: normal
|
|
|
whiteList['vertical-align'] = false; // default: baseline
|
|
|
whiteList['visibility'] = false; // default: visible
|
|
|
whiteList['voice-balance'] = false; // default: center
|
|
|
whiteList['voice-duration'] = false; // default: auto
|
|
|
whiteList['voice-family'] = false; // default: implementation dependent
|
|
|
whiteList['voice-pitch'] = false; // default: medium
|
|
|
whiteList['voice-range'] = false; // default: medium
|
|
|
whiteList['voice-rate'] = false; // default: normal
|
|
|
whiteList['voice-stress'] = false; // default: normal
|
|
|
whiteList['voice-volume'] = false; // default: medium
|
|
|
whiteList['volume'] = false; // default: medium
|
|
|
whiteList['white-space'] = false; // default: normal
|
|
|
whiteList['widows'] = false; // default: 2
|
|
|
whiteList['width'] = true; // default: auto
|
|
|
whiteList['will-change'] = false; // default: auto
|
|
|
whiteList['word-break'] = true; // default: normal
|
|
|
whiteList['word-spacing'] = true; // default: normal
|
|
|
whiteList['word-wrap'] = true; // default: normal
|
|
|
whiteList['wrap-flow'] = false; // default: auto
|
|
|
whiteList['wrap-through'] = false; // default: wrap
|
|
|
whiteList['writing-mode'] = false; // default: horizontal-tb
|
|
|
whiteList['z-index'] = false; // default: auto
|
|
|
|
|
|
return whiteList;
|
|
|
}
|
|
|
|
|
|
|
|
|
/**
|
|
|
* 匹配到白名单上的一个属性时
|
|
|
*
|
|
|
* @param {String} name
|
|
|
* @param {String} value
|
|
|
* @param {Object} options
|
|
|
* @return {String}
|
|
|
*/
|
|
|
function onAttr (name, value, options) {
|
|
|
// do nothing
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* 匹配到不在白名单上的一个属性时
|
|
|
*
|
|
|
* @param {String} name
|
|
|
* @param {String} value
|
|
|
* @param {Object} options
|
|
|
* @return {String}
|
|
|
*/
|
|
|
function onIgnoreAttr (name, value, options) {
|
|
|
// do nothing
|
|
|
}
|
|
|
|
|
|
var REGEXP_URL_JAVASCRIPT = /javascript\s*\:/img;
|
|
|
|
|
|
/**
|
|
|
* 过滤属性值
|
|
|
*
|
|
|
* @param {String} name
|
|
|
* @param {String} value
|
|
|
* @return {String}
|
|
|
*/
|
|
|
function safeAttrValue(name, value) {
|
|
|
if (REGEXP_URL_JAVASCRIPT.test(value)) return '';
|
|
|
return value;
|
|
|
}
|
|
|
|
|
|
|
|
|
exports.whiteList = getDefaultWhiteList();
|
|
|
exports.getDefaultWhiteList = getDefaultWhiteList;
|
|
|
exports.onAttr = onAttr;
|
|
|
exports.onIgnoreAttr = onIgnoreAttr;
|
|
|
exports.safeAttrValue = safeAttrValue;
|
|
|
|
|
|
},{}],8:[function(require,module,exports){
|
|
|
/**
|
|
|
* cssfilter
|
|
|
*
|
|
|
* @author 老雷<leizongmin@gmail.com>
|
|
|
*/
|
|
|
|
|
|
var DEFAULT = require('./default');
|
|
|
var FilterCSS = require('./css');
|
|
|
|
|
|
|
|
|
/**
|
|
|
* XSS过滤
|
|
|
*
|
|
|
* @param {String} css 要过滤的CSS代码
|
|
|
* @param {Object} options 选项：whiteList, onAttr, onIgnoreAttr
|
|
|
* @return {String}
|
|
|
*/
|
|
|
function filterCSS (html, options) {
|
|
|
var xss = new FilterCSS(options);
|
|
|
return xss.process(html);
|
|
|
}
|
|
|
|
|
|
|
|
|
// 输出
|
|
|
exports = module.exports = filterCSS;
|
|
|
exports.FilterCSS = FilterCSS;
|
|
|
for (var i in DEFAULT) exports[i] = DEFAULT[i];
|
|
|
|
|
|
// 在浏览器端使用
|
|
|
if (typeof window !== 'undefined') {
|
|
|
window.filterCSS = module.exports;
|
|
|
}
|
|
|
|
|
|
},{"./css":6,"./default":7}],9:[function(require,module,exports){
|
|
|
/**
|
|
|
* cssfilter
|
|
|
*
|
|
|
* @author 老雷<leizongmin@gmail.com>
|
|
|
*/
|
|
|
|
|
|
var _ = require('./util');
|
|
|
|
|
|
|
|
|
/**
|
|
|
* 解析style
|
|
|
*
|
|
|
* @param {String} css
|
|
|
* @param {Function} onAttr 处理属性的函数
|
|
|
* 参数格式： function (sourcePosition, position, name, value, source)
|
|
|
* @return {String}
|
|
|
*/
|
|
|
function parseStyle (css, onAttr) {
|
|
|
css = _.trimRight(css);
|
|
|
if (css[css.length - 1] !== ';') css += ';';
|
|
|
var cssLength = css.length;
|
|
|
var isParenthesisOpen = false;
|
|
|
var lastPos = 0;
|
|
|
var i = 0;
|
|
|
var retCSS = '';
|
|
|
|
|
|
function addNewAttr () {
|
|
|
// 如果没有正常的闭合圆括号，则直接忽略当前属性
|
|
|
if (!isParenthesisOpen) {
|
|
|
var source = _.trim(css.slice(lastPos, i));
|
|
|
var j = source.indexOf(':');
|
|
|
if (j !== -1) {
|
|
|
var name = _.trim(source.slice(0, j));
|
|
|
var value = _.trim(source.slice(j + 1));
|
|
|
// 必须有属性名称
|
|
|
if (name) {
|
|
|
var ret = onAttr(lastPos, retCSS.length, name, value, source);
|
|
|
if (ret) retCSS += ret + '; ';
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
lastPos = i + 1;
|
|
|
}
|
|
|
|
|
|
for (; i < cssLength; i++) {
|
|
|
var c = css[i];
|
|
|
if (c === '/' && css[i + 1] === '*') {
|
|
|
// 备注开始
|
|
|
var j = css.indexOf('*/', i + 2);
|
|
|
// 如果没有正常的备注结束，则后面的部分全部跳过
|
|
|
if (j === -1) break;
|
|
|
// 直接将当前位置调到备注结尾，并且初始化状态
|
|
|
i = j + 1;
|
|
|
lastPos = i + 1;
|
|
|
isParenthesisOpen = false;
|
|
|
} else if (c === '(') {
|
|
|
isParenthesisOpen = true;
|
|
|
} else if (c === ')') {
|
|
|
isParenthesisOpen = false;
|
|
|
} else if (c === ';') {
|
|
|
if (isParenthesisOpen) {
|
|
|
// 在圆括号里面，忽略
|
|
|
} else {
|
|
|
addNewAttr();
|
|
|
}
|
|
|
} else if (c === '\n') {
|
|
|
addNewAttr();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return _.trim(retCSS);
|
|
|
}
|
|
|
|
|
|
module.exports = parseStyle;
|
|
|
|
|
|
},{"./util":10}],10:[function(require,module,exports){
|
|
|
module.exports = {
|
|
|
indexOf: function (arr, item) {
|
|
|
var i, j;
|
|
|
if (Array.prototype.indexOf) {
|
|
|
return arr.indexOf(item);
|
|
|
}
|
|
|
for (i = 0, j = arr.length; i < j; i++) {
|
|
|
if (arr[i] === item) {
|
|
|
return i;
|
|
|
}
|
|
|
}
|
|
|
return -1;
|
|
|
},
|
|
|
forEach: function (arr, fn, scope) {
|
|
|
var i, j;
|
|
|
if (Array.prototype.forEach) {
|
|
|
return arr.forEach(fn, scope);
|
|
|
}
|
|
|
for (i = 0, j = arr.length; i < j; i++) {
|
|
|
fn.call(scope, arr[i], i, arr);
|
|
|
}
|
|
|
},
|
|
|
trim: function (str) {
|
|
|
if (String.prototype.trim) {
|
|
|
return str.trim();
|
|
|
}
|
|
|
return str.replace(/(^\s*)|(\s*$)/g, '');
|
|
|
},
|
|
|
trimRight: function (str) {
|
|
|
if (String.prototype.trimRight) {
|
|
|
return str.trimRight();
|
|
|
}
|
|
|
return str.replace(/(\s*$)/g, '');
|
|
|
}
|
|
|
};
|
|
|
|
|
|
},{}]},{},[2]);
|
