(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o */ var FilterCSS = require('cssfilter').FilterCSS; var getDefaultCSSWhiteList = require('cssfilter').getDefaultWhiteList; var _ = require('./util'); // 默认白名单 function getDefaultWhiteList () { return { a: ['target', 'href', 'title'], abbr: ['title'], address: [], area: ['shape', 'coords', 'href', 'alt'], article: [], aside: [], audio: ['autoplay', 'controls', 'loop', 'preload', 'src'], b: [], bdi: ['dir'], bdo: ['dir'], big: [], blockquote: ['cite'], br: [], caption: [], center: [], cite: [], code: [], col: ['align', 'valign', 'span', 'width'], colgroup: ['align', 'valign', 'span', 'width'], dd: [], del: ['datetime'], details: ['open'], div: [], dl: [], dt: [], em: [], font: ['color', 'size', 'face'], footer: [], h1: [], h2: [], h3: [], h4: [], h5: [], h6: [], header: [], hr: [], i: [], img: ['src', 'alt', 'title', 'width', 'height'], ins: ['datetime'], li: [], mark: [], nav: [], ol: [], p: [], pre: [], s: [], section:[], small: [], span: [], sub: [], sup: [], strong: [], table: ['width', 'border', 'align', 'valign'], tbody: ['align', 'valign'], td: ['width', 'rowspan', 'colspan', 'align', 'valign'], tfoot: ['align', 'valign'], th: ['width', 'rowspan', 'colspan', 'align', 'valign'], thead: ['align', 'valign'], tr: ['rowspan', 'align', 'valign'], tt: [], u: [], ul: [], video: ['autoplay', 'controls', 'loop', 'preload', 'src', 'height', 'width'] }; } // 默认CSS Filter var defaultCSSFilter = new FilterCSS(); /** * 匹配到标签时的处理方法 * * @param {String} tag * @param {String} html * @param {Object} options * @return {String} */ function onTag (tag, html, options) { // do nothing } /** * 匹配到不在白名单上的标签时的处理方法 * * @param {String} tag * @param {String} html * @param {Object} options * @return {String} */ function onIgnoreTag (tag, html, options) { // do nothing } /** * 匹配到标签属性时的处理方法 * * @param {String} tag * @param {String} name * @param {String} value * @return {String} */ function onTagAttr (tag, name, value) { // do nothing } /** * 匹配到不在白名单上的标签属性时的处理方法 * * @param {String} tag * @param {String} name * @param {String} value * @return {String} */ function onIgnoreTagAttr (tag, name, value) { // do nothing } /** * HTML转义 * * @param {String} html */ function escapeHtml (html) { return html.replace(REGEXP_LT, '<').replace(REGEXP_GT, '>'); } /** * 安全的标签属性值 * * @param {String} tag * @param {String} name * @param {String} value * @param {Object} cssFilter * @return {String} */ function safeAttrValue (tag, name, value, cssFilter) { // 转换为友好的属性值,再做判断 value = friendlyAttrValue(value); if (name === 'href' || name === 'src') { // 过滤 href 和 src 属性 // 仅允许 http:// | https:// | mailto: | / | # 开头的地址 value = _.trim(value); if (value === '#') return '#'; if (!(value.substr(0, 7) === 'http://' || value.substr(0, 8) === 'https://' || value.substr(0, 7) === 'mailto:' || value[0] === '#' || value[0] === '/')) { return ''; } } else if (name === 'background') { // 过滤 background 属性 (这个xss漏洞较老了,可能已经不适用) // javascript: REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0; if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) { return ''; } } else if (name === 'style') { // /*注释*/ /*REGEXP_DEFAULT_ON_TAG_ATTR_3.lastIndex = 0; if (REGEXP_DEFAULT_ON_TAG_ATTR_3.test(value)) { return ''; }*/ // expression() REGEXP_DEFAULT_ON_TAG_ATTR_7.lastIndex = 0; if (REGEXP_DEFAULT_ON_TAG_ATTR_7.test(value)) { return ''; } // url() REGEXP_DEFAULT_ON_TAG_ATTR_8.lastIndex = 0; if (REGEXP_DEFAULT_ON_TAG_ATTR_8.test(value)) { REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0; if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) { return ''; } } if (cssFilter !== false) { cssFilter = cssFilter || defaultCSSFilter; value = cssFilter.process(value); } } // 输出时需要转义<>" value = escapeAttrValue(value); return value; } // 正则表达式 var REGEXP_LT = //g; var REGEXP_QUOTE = /"/g; var REGEXP_QUOTE_2 = /"/g; var REGEXP_ATTR_VALUE_1 = /&#([a-zA-Z0-9]*);?/img; var REGEXP_ATTR_VALUE_COLON = /:?/img; var REGEXP_ATTR_VALUE_NEWLINE = /&newline;?/img; var REGEXP_DEFAULT_ON_TAG_ATTR_3 = /\/\*|\*\//mg; var REGEXP_DEFAULT_ON_TAG_ATTR_4 = /((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)\:/ig; var REGEXP_DEFAULT_ON_TAG_ATTR_5 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:/ig; var REGEXP_DEFAULT_ON_TAG_ATTR_6 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:\s*image\//ig; var REGEXP_DEFAULT_ON_TAG_ATTR_7 = /e\s*x\s*p\s*r\s*e\s*s\s*s\s*i\s*o\s*n\s*\(.*/ig; var REGEXP_DEFAULT_ON_TAG_ATTR_8 = /u\s*r\s*l\s*\(.*/ig; /** * 对双引号进行转义 * * @param {String} str * @return {String} str */ function escapeQuote (str) { return str.replace(REGEXP_QUOTE, '"'); } /** * 对双引号进行转义 * * @param {String} str * @return {String} str */ function unescapeQuote (str) { return str.replace(REGEXP_QUOTE_2, '"'); } /** * 对html实体编码进行转义 * * @param {String} str * @return {String} */ function escapeHtmlEntities (str) { return str.replace(REGEXP_ATTR_VALUE_1, function replaceUnicode (str, code) { return (code[0] === 'x' || code[0] === 'X') ? String.fromCharCode(parseInt(code.substr(1), 16)) : String.fromCharCode(parseInt(code, 10)); }); } /** * 对html5新增的危险实体编码进行转义 * * @param {String} str * @return {String} */ function escapeDangerHtml5Entities (str) { return str.replace(REGEXP_ATTR_VALUE_COLON, ':') .replace(REGEXP_ATTR_VALUE_NEWLINE, ' '); } /** * 清除不可见字符 * * @param {String} str * @return {String} */ function clearNonPrintableCharacter (str) { var str2 = ''; for (var i = 0, len = str.length; i < len; i++) { str2 += str.charCodeAt(i) < 32 ? ' ' : str.charAt(i); } return _.trim(str2); } /** * 将标签的属性值转换成一般字符,便于分析 * * @param {String} str * @return {String} */ function friendlyAttrValue (str) { str = unescapeQuote(str); // 双引号 str = escapeHtmlEntities(str); // 转换HTML实体编码 str = escapeDangerHtml5Entities(str); // 转换危险的HTML5新增实体编码 str = clearNonPrintableCharacter(str); // 清除不可见字符 return str; } /** * 转义用于输出的标签属性值 * * @param {String} str * @return {String} */ function escapeAttrValue (str) { str = escapeQuote(str); str = escapeHtml(str); return str; } /** * 去掉不在白名单中的标签onIgnoreTag处理方法 */ function onIgnoreTagStripAll () { return ''; } /** * 删除标签体 * * @param {array} tags 要删除的标签列表 * @param {function} next 对不在列表中的标签的处理函数,可选 */ function StripTagBody (tags, next) { if (typeof(next) !== 'function') { next = function () {}; } var isRemoveAllTag = !Array.isArray(tags); function isRemoveTag (tag) { if (isRemoveAllTag) return true; return (_.indexOf(tags, tag) !== -1); } var removeList = []; // 要删除的位置范围列表 var posStart = false; // 当前标签开始位置 return { onIgnoreTag: function (tag, html, options) { if (isRemoveTag(tag)) { if (options.isClosing) { var ret = '[/removed]'; var end = options.position + ret.length; removeList.push([posStart !== false ? posStart : options.position, end]); posStart = false; return ret; } else { if (!posStart) { posStart = options.position; } return '[removed]'; } } else { return next(tag, html, options); } }, remove: function (html) { var rethtml = ''; var lastPos = 0; _.forEach(removeList, function (pos) { rethtml += html.slice(lastPos, pos[0]); lastPos = pos[1]; }); rethtml += html.slice(lastPos); return rethtml; } }; } /** * 去除备注标签 * * @param {String} html * @return {String} */ function stripCommentTag (html) { return html.replace(STRIP_COMMENT_TAG_REGEXP, ''); } var STRIP_COMMENT_TAG_REGEXP = //g; /** * 去除不可见字符 * * @param {String} html * @return {String} */ function stripBlankChar (html) { var chars = html.split(''); chars = chars.filter(function (char) { var c = char.charCodeAt(0); if (c === 127) return false; if (c <= 31) { if (c === 10 || c === 13) return true; return false; } return true; }); return chars.join(''); } exports.whiteList = getDefaultWhiteList(); exports.getDefaultWhiteList = getDefaultWhiteList; exports.onTag = onTag; exports.onIgnoreTag = onIgnoreTag; exports.onTagAttr = onTagAttr; exports.onIgnoreTagAttr = onIgnoreTagAttr; exports.safeAttrValue = safeAttrValue; exports.escapeHtml = escapeHtml; exports.escapeQuote = escapeQuote; exports.unescapeQuote = unescapeQuote; exports.escapeHtmlEntities = escapeHtmlEntities; exports.escapeDangerHtml5Entities = escapeDangerHtml5Entities; exports.clearNonPrintableCharacter = clearNonPrintableCharacter; exports.friendlyAttrValue = friendlyAttrValue; exports.escapeAttrValue = escapeAttrValue; exports.onIgnoreTagStripAll = onIgnoreTagStripAll; exports.StripTagBody = StripTagBody; exports.stripCommentTag = stripCommentTag; exports.stripBlankChar = stripBlankChar; exports.cssFilter = defaultCSSFilter; exports.getDefaultCSSWhiteList = getDefaultCSSWhiteList; },{"./util":4,"cssfilter":8}],2:[function(require,module,exports){ /** * 模块入口 * * @author 老雷 */ var DEFAULT = require('./default'); var parser = require('./parser'); var FilterXSS = require('./xss'); /** * XSS过滤 * * @param {String} html 要过滤的HTML代码 * @param {Object} options 选项:whiteList, onTag, onTagAttr, onIgnoreTag, onIgnoreTagAttr, safeAttrValue, escapeHtml * @return {String} */ function filterXSS (html, options) { var xss = new FilterXSS(options); return xss.process(html); } // 输出 exports = module.exports = filterXSS; exports.FilterXSS = FilterXSS; for (var i in DEFAULT) exports[i] = DEFAULT[i]; for (var i in parser) exports[i] = parser[i]; // 在浏览器端使用 if (typeof window !== 'undefined') { window.filterXSS = module.exports; } },{"./default":1,"./parser":3,"./xss":5}],3:[function(require,module,exports){ /** * 简单 HTML Parser * * @author 老雷 */ var _ = require('./util'); /** * 获取标签的名称 * * @param {String} html 如:'' * @return {String} */ function getTagName (html) { var i = html.indexOf(' '); if (i === -1) { var tagName = html.slice(1, -1); } else { var 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; } /** * 是否为闭合标签 * * @param {String} html 如:'' * @return {Boolean} */ function isClosing (html) { return (html.slice(0, 2) === '') { 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; } // HTML标签内的引号仅当前一个字符是等于号时才有效 if ((c === '"' || c === "'") && html.charAt(currentPos - 1) === '=') { quoteStart = c; continue; } } else { if (c === quoteStart) { quoteStart = false; continue; } } } } if (lastPos < html.length) { rethtml += escapeHtml(html.substr(lastPos)); } return rethtml; } // 不符合属性名称规则的正则表达式 var REGEXP_ATTR_NAME = /[^a-zA-Z0-9_:\.\-]/img; /** * 分析标签HTML代码,调用相应的函数处理,返回HTML * * @param {String} html 如标签'' 则为 'href="#" target="_blank"' * @param {Function} onAttr 处理属性值的函数 * 函数格式: function (name, value) * @return {String} */ function parseAttr (html, onAttr) { 'user strict'; var lastPos = 0; // 当前位置 var retAttrs = []; // 待返回的属性列表 var tmpName = false; // 临时属性名称 var len = html.length; // HTML代码长度 function addAttr (name, value) { name = _.trim(name); name = name.replace(REGEXP_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; continue; } if (tmpName !== false) { // HTML标签内的引号仅当前一个字符是等于号时才有效 if (i === lastPos && (c === '"' || c === "'") && html.charAt(i - 1) === '=') { j = html.indexOf(c, i + 1); if (j === -1) { break; } else { v = _.trim(html.slice(lastPos + 1, j)); addAttr(tmpName, v); tmpName = false; i = j; lastPos = i + 1; continue; } } } if (c === ' ') { 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 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, ''); } }; },{}],5:[function(require,module,exports){ /** * 过滤XSS * * @author 老雷 */ var FilterCSS = require('cssfilter').FilterCSS; var DEFAULT = require('./default'); var parser = require('./parser'); var parseTag = parser.parseTag; var parseAttr = parser.parseAttr; var _ = require('./util'); /** * 返回值是否为空 * * @param {Object} obj * @return {Boolean} */ function isNull (obj) { return (obj === undefined || obj === null); } /** * 取标签内的属性列表字符串 * * @param {String} html * @return {Object} * - {String} html * - {Boolean} closing */ function getAttrs (html) { var i = html.indexOf(' '); 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 }; } /** * XSS过滤对象 * * @param {Object} options * 选项:whiteList, onTag, onTagAttr, onIgnoreTag, * onIgnoreTagAttr, safeAttrValue, escapeHtml * stripIgnoreTagBody, allowCommentTag, stripBlankChar * css{whiteList, onAttr, onIgnoreAttr} css=false表示禁用cssfilter */ function FilterXSS (options) { options = 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; } options.whiteList = 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); } } /** * 开始处理 * * @param {String} html * @return {String} */ FilterXSS.prototype.process = function (html) { // 兼容各种奇葩输入 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; // 是否清除不可见字符 if (options.stripBlankChar) { html = DEFAULT.stripBlankChar(html); } // 是否禁止备注标签 if (!options.allowCommentTag) { html = DEFAULT.stripCommentTag(html); } // 如果开启了stripIgnoreTagBody var stripIgnoreTagBody = false; if (options.stripIgnoreTagBody) { var 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: (tag in whiteList) }; // 调用onTag处理 var ret = onTag(tag, html, info); if (!isNull(ret)) return ret; // 默认标签处理方法 if (info.isWhite) { // 白名单标签,解析标签属性 // 如果是闭合标签,则不需要解析属性 if (info.isClosing) { return ''; } var attrs = getAttrs(html); var whiteAttrList = whiteList[tag]; var attrsHtml = parseAttr(attrs.html, function (name, value) { // 调用onTagAttr处理 var isWhiteAttr = (_.indexOf(whiteAttrList, name) !== -1); var ret = onTagAttr(tag, name, value, isWhiteAttr); if (!isNull(ret)) return ret; // 默认的属性处理方法 if (isWhiteAttr) { // 白名单属性,调用safeAttrValue过滤属性值 value = safeAttrValue(tag, name, value, cssFilter); if (value) { return name + '="' + value + '"'; } else { return name; } } else { // 非白名单属性,调用onIgnoreTagAttr处理 var ret = onIgnoreTagAttr(tag, name, value, isWhiteAttr); if (!isNull(ret)) return ret; return; } }); // 构造新的标签代码 var html = '<' + tag; if (attrsHtml) html += ' ' + attrsHtml; if (attrs.closing) html += ' /'; html += '>'; return html; } else { // 非白名单标签,调用onIgnoreTag处理 var ret = onIgnoreTag(tag, html, info); if (!isNull(ret)) return ret; return escapeHtml(html); } }, escapeHtml); // 如果开启了stripIgnoreTagBody,需要对结果再进行处理 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 */ 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); } /** * 创建CSS过滤器 * * @param {Object} options * - {Object} whiteList * - {Object} onAttr * - {Object} onIgnoreAttr */ function FilterCSS (options) { options = options || {}; options.whiteList = options.whiteList || DEFAULT.whiteList; options.onAttr = options.onAttr || DEFAULT.onAttr; options.onIgnoreAttr = options.onIgnoreAttr || DEFAULT.onIgnoreAttr; 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 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; 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 */ 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 } exports.whiteList = getDefaultWhiteList(); exports.getDefaultWhiteList = getDefaultWhiteList; exports.onAttr = onAttr; exports.onIgnoreAttr = onIgnoreAttr; },{}],8:[function(require,module,exports){ /** * cssfilter * * @author 老雷 */ 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 */ 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]);