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-rw-r--r--js/lib/xss.js1614
1 files changed, 1614 insertions, 0 deletions
diff --git a/js/lib/xss.js b/js/lib/xss.js
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+++ b/js/lib/xss.js
@@ -0,0 +1,1614 @@
+(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<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+/**
+ * default settings
+ *
+ * @author Zongmin Lei<leizongmin@gmail.com>
+ */
+
+var FilterCSS = require("cssfilter").FilterCSS;
+var getDefaultCSSWhiteList = require("cssfilter").getDefaultWhiteList;
+var _ = require("./util");
+
+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"]
+ };
+}
+
+var defaultCSSFilter = new FilterCSS();
+
+/**
+ * default onTag function
+ *
+ * @param {String} tag
+ * @param {String} html
+ * @param {Object} options
+ * @return {String}
+ */
+function onTag(tag, html, options) {
+ // do nothing
+}
+
+/**
+ * default onIgnoreTag function
+ *
+ * @param {String} tag
+ * @param {String} html
+ * @param {Object} options
+ * @return {String}
+ */
+function onIgnoreTag(tag, html, options) {
+ // do nothing
+}
+
+/**
+ * default onTagAttr function
+ *
+ * @param {String} tag
+ * @param {String} name
+ * @param {String} value
+ * @return {String}
+ */
+function onTagAttr(tag, name, value) {
+ // do nothing
+}
+
+/**
+ * default onIgnoreTagAttr function
+ *
+ * @param {String} tag
+ * @param {String} name
+ * @param {String} value
+ * @return {String}
+ */
+function onIgnoreTagAttr(tag, name, value) {
+ // do nothing
+}
+
+/**
+ * default escapeHtml function
+ *
+ * @param {String} html
+ */
+function escapeHtml(html) {
+ return html.replace(REGEXP_LT, "&lt;").replace(REGEXP_GT, "&gt;");
+}
+
+/**
+ * default safeAttrValue function
+ *
+ * @param {String} tag
+ * @param {String} name
+ * @param {String} value
+ * @param {Object} cssFilter
+ * @return {String}
+ */
+function safeAttrValue(tag, name, value, cssFilter) {
+ // unescape attribute value firstly
+ value = friendlyAttrValue(value);
+
+ if (name === "href" || name === "src") {
+ // filter `href` and `src` attribute
+ // only allow the value that starts with `http://` | `https://` | `mailto:` | `/` | `#` | and others
+ value = _.trim(value);
+ if (value === "#") return "#";
+ if (
+ !(
+ value.substr(0, 7) === "http://" ||
+ value.substr(0, 8) === "https://" ||
+ value.substr(0, 6) === "ftp://" ||
+ value.substr(0, 7) === "mailto:" ||
+ value.substr(0, 4) === "tel:" ||
+ value.substr(0, 11) === "data:image/" ||
+ value.substr(0, 2) === "./" ||
+ value.substr(0, 3) === "../" ||
+ value[0] === "#" ||
+ value[0] === "/"
+ )
+ ) {
+ return "";
+ }
+ } else if (name === "background") {
+ // filter `background` attribute (maybe no use)
+ // `javascript:`
+ REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
+ if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
+ return "";
+ }
+ } else if (name === "style") {
+ // `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);
+ }
+ }
+
+ // escape `<>"` before returns
+ value = escapeAttrValue(value);
+ return value;
+}
+
+// RegExp list
+var REGEXP_LT = /</g;
+var REGEXP_GT = />/g;
+var REGEXP_QUOTE = /"/g;
+var REGEXP_QUOTE_2 = /&quot;/g;
+var REGEXP_ATTR_VALUE_1 = /&#([a-zA-Z0-9]*);?/gim;
+var REGEXP_ATTR_VALUE_COLON = /&colon;?/gim;
+var REGEXP_ATTR_VALUE_NEWLINE = /&newline;?/gim;
+var REGEXP_DEFAULT_ON_TAG_ATTR_3 = /\/\*|\*\//gm;
+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)\:/gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_5 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:/gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_6 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:\s*image\//gi;
+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*\(.*/gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_8 = /u\s*r\s*l\s*\(.*/gi;
+
+/**
+ * escape doube quote
+ *
+ * @param {String} str
+ * @return {String} str
+ */
+function escapeQuote(str) {
+ return str.replace(REGEXP_QUOTE, "&quot;");
+}
+
+/**
+ * unescape double quote
+ *
+ * @param {String} str
+ * @return {String} str
+ */
+function unescapeQuote(str) {
+ return str.replace(REGEXP_QUOTE_2, '"');
+}
+
+/**
+ * escape html entities
+ *
+ * @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));
+ });
+}
+
+/**
+ * escape html5 new danger entities
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function escapeDangerHtml5Entities(str) {
+ return str
+ .replace(REGEXP_ATTR_VALUE_COLON, ":")
+ .replace(REGEXP_ATTR_VALUE_NEWLINE, " ");
+}
+
+/**
+ * clear nonprintable characters
+ *
+ * @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);
+}
+
+/**
+ * get friendly attribute value
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function friendlyAttrValue(str) {
+ str = unescapeQuote(str);
+ str = escapeHtmlEntities(str);
+ str = escapeDangerHtml5Entities(str);
+ str = clearNonPrintableCharacter(str);
+ return str;
+}
+
+/**
+ * unescape attribute value
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function escapeAttrValue(str) {
+ str = escapeQuote(str);
+ str = escapeHtml(str);
+ return str;
+}
+
+/**
+ * `onIgnoreTag` function for removing all the tags that are not in whitelist
+ */
+function onIgnoreTagStripAll() {
+ return "";
+}
+
+/**
+ * remove tag body
+ * specify a `tags` list, if the tag is not in the `tags` list then process by the specify function (optional)
+ *
+ * @param {array} tags
+ * @param {function} next
+ */
+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 = [];
+ var posStart = false;
+
+ 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;
+ }
+ };
+}
+
+/**
+ * remove html comments
+ *
+ * @param {String} html
+ * @return {String}
+ */
+function stripCommentTag(html) {
+ return html.replace(STRIP_COMMENT_TAG_REGEXP, "");
+}
+var STRIP_COMMENT_TAG_REGEXP = /<!--[\s\S]*?-->/g;
+
+/**
+ * remove invisible characters
+ *
+ * @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){
+/**
+ * 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;
+for (var i in DEFAULT) exports[i] = DEFAULT[i];
+for (var i in parser) exports[i] = parser[i];
+
+// 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);
+ 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;
+}
+
+/**
+ * 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 = "";
+
+ 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 === ">") {
+ 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 === "'") && 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;
+}
+
+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 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;
+ continue;
+ }
+ if (tmpName !== false) {
+ 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 (/\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 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;
+}
+
+/**
+ * FilterXSS class
+ *
+ * @param {Object} options
+ * whiteList, 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;
+ }
+
+ 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);
+ }
+}
+
+/**
+ * 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) {
+ 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: whiteList.hasOwnProperty(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()`
+ var ret = onIgnoreTagAttr(tag, name, value, isWhiteAttr);
+ if (!isNull(ret)) return ret;
+ return;
+ }
+ });
+
+ // build new tag html
+ var html = "<" + tag;
+ if (attrsHtml) html += " " + attrsHtml;
+ if (attrs.closing) html += " /";
+ html += ">";
+ return html;
+ } else {
+ // call `onIgnoreTag()`
+ var 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]);
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 07:02:05 +0100