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Diffstat (limited to 'libs/bower_components/angular-sanitize/angular-sanitize.js')
| -rw-r--r-- | libs/bower_components/angular-sanitize/angular-sanitize.js | 883 |
1 files changed, 503 insertions, 380 deletions
diff --git a/libs/bower_components/angular-sanitize/angular-sanitize.js b/libs/bower_components/angular-sanitize/angular-sanitize.js index 8ebce0823e..e8bdd99620 100644 --- a/libs/bower_components/angular-sanitize/angular-sanitize.js +++ b/libs/bower_components/angular-sanitize/angular-sanitize.js @@ -1,9 +1,9 @@ /** - * @license AngularJS v1.4.10 - * (c) 2010-2015 Google, Inc. http://angularjs.org + * @license AngularJS v1.6.5 + * (c) 2010-2017 Google, Inc. http://angularjs.org * License: MIT */ -(function(window, angular, undefined) {'use strict'; +(function(window, angular) {'use strict'; /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Any commits to this file should be reviewed with security in mind. * @@ -17,6 +17,15 @@ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ var $sanitizeMinErr = angular.$$minErr('$sanitize'); +var bind; +var extend; +var forEach; +var isDefined; +var lowercase; +var noop; +var nodeContains; +var htmlParser; +var htmlSanitizeWriter; /** * @ngdoc module @@ -33,42 +42,29 @@ var $sanitizeMinErr = angular.$$minErr('$sanitize'); * See {@link ngSanitize.$sanitize `$sanitize`} for usage. */ -/* - * HTML Parser By Misko Hevery (misko@hevery.com) - * based on: HTML Parser By John Resig (ejohn.org) - * Original code by Erik Arvidsson, Mozilla Public License - * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js - * - * // Use like so: - * htmlParser(htmlString, { - * start: function(tag, attrs, unary) {}, - * end: function(tag) {}, - * chars: function(text) {}, - * comment: function(text) {} - * }); - * - */ - - /** * @ngdoc service * @name $sanitize * @kind function * * @description + * Sanitizes an html string by stripping all potentially dangerous tokens. + * * The input is sanitized by parsing the HTML into tokens. All safe tokens (from a whitelist) are * then serialized back to properly escaped html string. This means that no unsafe input can make - * it into the returned string, however, since our parser is more strict than a typical browser - * parser, it's possible that some obscure input, which would be recognized as valid HTML by a - * browser, won't make it through the sanitizer. The input may also contain SVG markup. - * The whitelist is configured using the functions `aHrefSanitizationWhitelist` and - * `imgSrcSanitizationWhitelist` of {@link ng.$compileProvider `$compileProvider`}. + * it into the returned string. + * + * The whitelist for URL sanitization of attribute values is configured using the functions + * `aHrefSanitizationWhitelist` and `imgSrcSanitizationWhitelist` of {@link ng.$compileProvider + * `$compileProvider`}. + * + * The input may also contain SVG markup if this is enabled via {@link $sanitizeProvider}. * * @param {string} html HTML input. * @returns {string} Sanitized HTML. * * @example - <example module="sanitizeExample" deps="angular-sanitize.js"> + <example module="sanitizeExample" deps="angular-sanitize.js" name="sanitize-service"> <file name="index.html"> <script> angular.module('sanitizeExample', ['ngSanitize']) @@ -117,19 +113,19 @@ var $sanitizeMinErr = angular.$$minErr('$sanitize'); </file> <file name="protractor.js" type="protractor"> it('should sanitize the html snippet by default', function() { - expect(element(by.css('#bind-html-with-sanitize div')).getInnerHtml()). + expect(element(by.css('#bind-html-with-sanitize div')).getAttribute('innerHTML')). toBe('<p>an html\n<em>click here</em>\nsnippet</p>'); }); it('should inline raw snippet if bound to a trusted value', function() { - expect(element(by.css('#bind-html-with-trust div')).getInnerHtml()). + expect(element(by.css('#bind-html-with-trust div')).getAttribute('innerHTML')). toBe("<p style=\"color:blue\">an html\n" + "<em onmouseover=\"this.textContent='PWN3D!'\">click here</em>\n" + "snippet</p>"); }); it('should escape snippet without any filter', function() { - expect(element(by.css('#bind-default div')).getInnerHtml()). + expect(element(by.css('#bind-default div')).getAttribute('innerHTML')). toBe("<p style=\"color:blue\">an html\n" + "<em onmouseover=\"this.textContent='PWN3D!'\">click here</em>\n" + "snippet</p>"); @@ -138,396 +134,477 @@ var $sanitizeMinErr = angular.$$minErr('$sanitize'); it('should update', function() { element(by.model('snippet')).clear(); element(by.model('snippet')).sendKeys('new <b onclick="alert(1)">text</b>'); - expect(element(by.css('#bind-html-with-sanitize div')).getInnerHtml()). + expect(element(by.css('#bind-html-with-sanitize div')).getAttribute('innerHTML')). toBe('new <b>text</b>'); - expect(element(by.css('#bind-html-with-trust div')).getInnerHtml()).toBe( + expect(element(by.css('#bind-html-with-trust div')).getAttribute('innerHTML')).toBe( 'new <b onclick="alert(1)">text</b>'); - expect(element(by.css('#bind-default div')).getInnerHtml()).toBe( + expect(element(by.css('#bind-default div')).getAttribute('innerHTML')).toBe( "new <b onclick=\"alert(1)\">text</b>"); }); </file> </example> */ + + +/** + * @ngdoc provider + * @name $sanitizeProvider + * @this + * + * @description + * Creates and configures {@link $sanitize} instance. + */ function $SanitizeProvider() { + var svgEnabled = false; + this.$get = ['$$sanitizeUri', function($$sanitizeUri) { + if (svgEnabled) { + extend(validElements, svgElements); + } return function(html) { var buf = []; htmlParser(html, htmlSanitizeWriter(buf, function(uri, isImage) { - return !/^unsafe/.test($$sanitizeUri(uri, isImage)); + return !/^unsafe:/.test($$sanitizeUri(uri, isImage)); })); return buf.join(''); }; }]; -} -function sanitizeText(chars) { - var buf = []; - var writer = htmlSanitizeWriter(buf, angular.noop); - writer.chars(chars); - return buf.join(''); -} - - -// Regular Expressions for parsing tags and attributes -var START_TAG_REGEXP = - /^<((?:[a-zA-Z])[\w:-]*)((?:\s+[\w:-]+(?:\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|[^>\s]+))?)*)\s*(\/?)\s*(>?)/, - END_TAG_REGEXP = /^<\/\s*([\w:-]+)[^>]*>/, - ATTR_REGEXP = /([\w:-]+)(?:\s*=\s*(?:(?:"((?:[^"])*)")|(?:'((?:[^'])*)')|([^>\s]+)))?/g, - BEGIN_TAG_REGEXP = /^</, - BEGING_END_TAGE_REGEXP = /^<\//, - COMMENT_REGEXP = /<!--(.*?)-->/g, - DOCTYPE_REGEXP = /<!DOCTYPE([^>]*?)>/i, - CDATA_REGEXP = /<!\[CDATA\[(.*?)]]>/g, - SURROGATE_PAIR_REGEXP = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g, - // Match everything outside of normal chars and " (quote character) - NON_ALPHANUMERIC_REGEXP = /([^\#-~| |!])/g; - - -// Good source of info about elements and attributes -// http://dev.w3.org/html5/spec/Overview.html#semantics -// http://simon.html5.org/html-elements - -// Safe Void Elements - HTML5 -// http://dev.w3.org/html5/spec/Overview.html#void-elements -var voidElements = makeMap("area,br,col,hr,img,wbr"); - -// Elements that you can, intentionally, leave open (and which close themselves) -// http://dev.w3.org/html5/spec/Overview.html#optional-tags -var optionalEndTagBlockElements = makeMap("colgroup,dd,dt,li,p,tbody,td,tfoot,th,thead,tr"), - optionalEndTagInlineElements = makeMap("rp,rt"), - optionalEndTagElements = angular.extend({}, - optionalEndTagInlineElements, - optionalEndTagBlockElements); - -// Safe Block Elements - HTML5 -var blockElements = angular.extend({}, optionalEndTagBlockElements, makeMap("address,article," + - "aside,blockquote,caption,center,del,dir,div,dl,figure,figcaption,footer,h1,h2,h3,h4,h5," + - "h6,header,hgroup,hr,ins,map,menu,nav,ol,pre,script,section,table,ul")); - -// Inline Elements - HTML5 -var inlineElements = angular.extend({}, optionalEndTagInlineElements, makeMap("a,abbr,acronym,b," + - "bdi,bdo,big,br,cite,code,del,dfn,em,font,i,img,ins,kbd,label,map,mark,q,ruby,rp,rt,s," + - "samp,small,span,strike,strong,sub,sup,time,tt,u,var")); - -// SVG Elements -// https://wiki.whatwg.org/wiki/Sanitization_rules#svg_Elements -// Note: the elements animate,animateColor,animateMotion,animateTransform,set are intentionally omitted. -// They can potentially allow for arbitrary javascript to be executed. See #11290 -var svgElements = makeMap("circle,defs,desc,ellipse,font-face,font-face-name,font-face-src,g,glyph," + - "hkern,image,linearGradient,line,marker,metadata,missing-glyph,mpath,path,polygon,polyline," + - "radialGradient,rect,stop,svg,switch,text,title,tspan,use"); - -// Special Elements (can contain anything) -var specialElements = makeMap("script,style"); - -var validElements = angular.extend({}, - voidElements, - blockElements, - inlineElements, - optionalEndTagElements, - svgElements); - -//Attributes that have href and hence need to be sanitized -var uriAttrs = makeMap("background,cite,href,longdesc,src,usemap,xlink:href"); - -var htmlAttrs = makeMap('abbr,align,alt,axis,bgcolor,border,cellpadding,cellspacing,class,clear,' + - 'color,cols,colspan,compact,coords,dir,face,headers,height,hreflang,hspace,' + - 'ismap,lang,language,nohref,nowrap,rel,rev,rows,rowspan,rules,' + - 'scope,scrolling,shape,size,span,start,summary,tabindex,target,title,type,' + - 'valign,value,vspace,width'); - -// SVG attributes (without "id" and "name" attributes) -// https://wiki.whatwg.org/wiki/Sanitization_rules#svg_Attributes -var svgAttrs = makeMap('accent-height,accumulate,additive,alphabetic,arabic-form,ascent,' + - 'baseProfile,bbox,begin,by,calcMode,cap-height,class,color,color-rendering,content,' + - 'cx,cy,d,dx,dy,descent,display,dur,end,fill,fill-rule,font-family,font-size,font-stretch,' + - 'font-style,font-variant,font-weight,from,fx,fy,g1,g2,glyph-name,gradientUnits,hanging,' + - 'height,horiz-adv-x,horiz-origin-x,ideographic,k,keyPoints,keySplines,keyTimes,lang,' + - 'marker-end,marker-mid,marker-start,markerHeight,markerUnits,markerWidth,mathematical,' + - 'max,min,offset,opacity,orient,origin,overline-position,overline-thickness,panose-1,' + - 'path,pathLength,points,preserveAspectRatio,r,refX,refY,repeatCount,repeatDur,' + - 'requiredExtensions,requiredFeatures,restart,rotate,rx,ry,slope,stemh,stemv,stop-color,' + - 'stop-opacity,strikethrough-position,strikethrough-thickness,stroke,stroke-dasharray,' + - 'stroke-dashoffset,stroke-linecap,stroke-linejoin,stroke-miterlimit,stroke-opacity,' + - 'stroke-width,systemLanguage,target,text-anchor,to,transform,type,u1,u2,underline-position,' + - 'underline-thickness,unicode,unicode-range,units-per-em,values,version,viewBox,visibility,' + - 'width,widths,x,x-height,x1,x2,xlink:actuate,xlink:arcrole,xlink:role,xlink:show,xlink:title,' + - 'xlink:type,xml:base,xml:lang,xml:space,xmlns,xmlns:xlink,y,y1,y2,zoomAndPan', true); - -var validAttrs = angular.extend({}, - uriAttrs, - svgAttrs, - htmlAttrs); - -function makeMap(str, lowercaseKeys) { - var obj = {}, items = str.split(','), i; - for (i = 0; i < items.length; i++) { - obj[lowercaseKeys ? angular.lowercase(items[i]) : items[i]] = true; - } - return obj; -} - -/** - * @example - * htmlParser(htmlString, { - * start: function(tag, attrs, unary) {}, - * end: function(tag) {}, - * chars: function(text) {}, - * comment: function(text) {} - * }); - * - * @param {string} html string - * @param {object} handler - */ -function htmlParser(html, handler) { - if (typeof html !== 'string') { - if (html === null || typeof html === 'undefined') { - html = ''; + /** + * @ngdoc method + * @name $sanitizeProvider#enableSvg + * @kind function + * + * @description + * Enables a subset of svg to be supported by the sanitizer. + * + * <div class="alert alert-warning"> + * <p>By enabling this setting without taking other precautions, you might expose your + * application to click-hijacking attacks. In these attacks, sanitized svg elements could be positioned + * outside of the containing element and be rendered over other elements on the page (e.g. a login + * link). Such behavior can then result in phishing incidents.</p> + * + * <p>To protect against these, explicitly setup `overflow: hidden` css rule for all potential svg + * tags within the sanitized content:</p> + * + * <br> + * + * <pre><code> + * .rootOfTheIncludedContent svg { + * overflow: hidden !important; + * } + * </code></pre> + * </div> + * + * @param {boolean=} flag Enable or disable SVG support in the sanitizer. + * @returns {boolean|ng.$sanitizeProvider} Returns the currently configured value if called + * without an argument or self for chaining otherwise. + */ + this.enableSvg = function(enableSvg) { + if (isDefined(enableSvg)) { + svgEnabled = enableSvg; + return this; } else { - html = '' + html; + return svgEnabled; } - } - var index, chars, match, stack = [], last = html, text; - stack.last = function() { return stack[stack.length - 1]; }; + }; - while (html) { - text = ''; - chars = true; + ////////////////////////////////////////////////////////////////////////////////////////////////// + // Private stuff + ////////////////////////////////////////////////////////////////////////////////////////////////// - // Make sure we're not in a script or style element - if (!stack.last() || !specialElements[stack.last()]) { + bind = angular.bind; + extend = angular.extend; + forEach = angular.forEach; + isDefined = angular.isDefined; + lowercase = angular.lowercase; + noop = angular.noop; - // Comment - if (html.indexOf("<!--") === 0) { - // comments containing -- are not allowed unless they terminate the comment - index = html.indexOf("--", 4); + htmlParser = htmlParserImpl; + htmlSanitizeWriter = htmlSanitizeWriterImpl; - if (index >= 0 && html.lastIndexOf("-->", index) === index) { - if (handler.comment) handler.comment(html.substring(4, index)); - html = html.substring(index + 3); - chars = false; - } - // DOCTYPE - } else if (DOCTYPE_REGEXP.test(html)) { - match = html.match(DOCTYPE_REGEXP); + nodeContains = window.Node.prototype.contains || /** @this */ function(arg) { + // eslint-disable-next-line no-bitwise + return !!(this.compareDocumentPosition(arg) & 16); + }; - if (match) { - html = html.replace(match[0], ''); - chars = false; - } - // end tag - } else if (BEGING_END_TAGE_REGEXP.test(html)) { - match = html.match(END_TAG_REGEXP); - - if (match) { - html = html.substring(match[0].length); - match[0].replace(END_TAG_REGEXP, parseEndTag); - chars = false; - } + // Regular Expressions for parsing tags and attributes + var SURROGATE_PAIR_REGEXP = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g, + // Match everything outside of normal chars and " (quote character) + NON_ALPHANUMERIC_REGEXP = /([^#-~ |!])/g; + + + // Good source of info about elements and attributes + // http://dev.w3.org/html5/spec/Overview.html#semantics + // http://simon.html5.org/html-elements + + // Safe Void Elements - HTML5 + // http://dev.w3.org/html5/spec/Overview.html#void-elements + var voidElements = toMap('area,br,col,hr,img,wbr'); + + // Elements that you can, intentionally, leave open (and which close themselves) + // http://dev.w3.org/html5/spec/Overview.html#optional-tags + var optionalEndTagBlockElements = toMap('colgroup,dd,dt,li,p,tbody,td,tfoot,th,thead,tr'), + optionalEndTagInlineElements = toMap('rp,rt'), + optionalEndTagElements = extend({}, + optionalEndTagInlineElements, + optionalEndTagBlockElements); + + // Safe Block Elements - HTML5 + var blockElements = extend({}, optionalEndTagBlockElements, toMap('address,article,' + + 'aside,blockquote,caption,center,del,dir,div,dl,figure,figcaption,footer,h1,h2,h3,h4,h5,' + + 'h6,header,hgroup,hr,ins,map,menu,nav,ol,pre,section,table,ul')); + + // Inline Elements - HTML5 + var inlineElements = extend({}, optionalEndTagInlineElements, toMap('a,abbr,acronym,b,' + + 'bdi,bdo,big,br,cite,code,del,dfn,em,font,i,img,ins,kbd,label,map,mark,q,ruby,rp,rt,s,' + + 'samp,small,span,strike,strong,sub,sup,time,tt,u,var')); + + // SVG Elements + // https://wiki.whatwg.org/wiki/Sanitization_rules#svg_Elements + // Note: the elements animate,animateColor,animateMotion,animateTransform,set are intentionally omitted. + // They can potentially allow for arbitrary javascript to be executed. See #11290 + var svgElements = toMap('circle,defs,desc,ellipse,font-face,font-face-name,font-face-src,g,glyph,' + + 'hkern,image,linearGradient,line,marker,metadata,missing-glyph,mpath,path,polygon,polyline,' + + 'radialGradient,rect,stop,svg,switch,text,title,tspan'); + + // Blocked Elements (will be stripped) + var blockedElements = toMap('script,style'); + + var validElements = extend({}, + voidElements, + blockElements, + inlineElements, + optionalEndTagElements); + + //Attributes that have href and hence need to be sanitized + var uriAttrs = toMap('background,cite,href,longdesc,src,xlink:href'); + + var htmlAttrs = toMap('abbr,align,alt,axis,bgcolor,border,cellpadding,cellspacing,class,clear,' + + 'color,cols,colspan,compact,coords,dir,face,headers,height,hreflang,hspace,' + + 'ismap,lang,language,nohref,nowrap,rel,rev,rows,rowspan,rules,' + + 'scope,scrolling,shape,size,span,start,summary,tabindex,target,title,type,' + + 'valign,value,vspace,width'); + + // SVG attributes (without "id" and "name" attributes) + // https://wiki.whatwg.org/wiki/Sanitization_rules#svg_Attributes + var svgAttrs = toMap('accent-height,accumulate,additive,alphabetic,arabic-form,ascent,' + + 'baseProfile,bbox,begin,by,calcMode,cap-height,class,color,color-rendering,content,' + + 'cx,cy,d,dx,dy,descent,display,dur,end,fill,fill-rule,font-family,font-size,font-stretch,' + + 'font-style,font-variant,font-weight,from,fx,fy,g1,g2,glyph-name,gradientUnits,hanging,' + + 'height,horiz-adv-x,horiz-origin-x,ideographic,k,keyPoints,keySplines,keyTimes,lang,' + + 'marker-end,marker-mid,marker-start,markerHeight,markerUnits,markerWidth,mathematical,' + + 'max,min,offset,opacity,orient,origin,overline-position,overline-thickness,panose-1,' + + 'path,pathLength,points,preserveAspectRatio,r,refX,refY,repeatCount,repeatDur,' + + 'requiredExtensions,requiredFeatures,restart,rotate,rx,ry,slope,stemh,stemv,stop-color,' + + 'stop-opacity,strikethrough-position,strikethrough-thickness,stroke,stroke-dasharray,' + + 'stroke-dashoffset,stroke-linecap,stroke-linejoin,stroke-miterlimit,stroke-opacity,' + + 'stroke-width,systemLanguage,target,text-anchor,to,transform,type,u1,u2,underline-position,' + + 'underline-thickness,unicode,unicode-range,units-per-em,values,version,viewBox,visibility,' + + 'width,widths,x,x-height,x1,x2,xlink:actuate,xlink:arcrole,xlink:role,xlink:show,xlink:title,' + + 'xlink:type,xml:base,xml:lang,xml:space,xmlns,xmlns:xlink,y,y1,y2,zoomAndPan', true); + + var validAttrs = extend({}, + uriAttrs, + svgAttrs, + htmlAttrs); + + function toMap(str, lowercaseKeys) { + var obj = {}, items = str.split(','), i; + for (i = 0; i < items.length; i++) { + obj[lowercaseKeys ? lowercase(items[i]) : items[i]] = true; + } + return obj; + } - // start tag - } else if (BEGIN_TAG_REGEXP.test(html)) { - match = html.match(START_TAG_REGEXP); + /** + * Create an inert document that contains the dirty HTML that needs sanitizing + * Depending upon browser support we use one of three strategies for doing this. + * Support: Safari 10.x -> XHR strategy + * Support: Firefox -> DomParser strategy + */ + var getInertBodyElement /* function(html: string): HTMLBodyElement */ = (function(window, document) { + var inertDocument; + if (document && document.implementation) { + inertDocument = document.implementation.createHTMLDocument('inert'); + } else { + throw $sanitizeMinErr('noinert', 'Can\'t create an inert html document'); + } + var inertBodyElement = (inertDocument.documentElement || inertDocument.getDocumentElement()).querySelector('body'); - if (match) { - // We only have a valid start-tag if there is a '>'. - if (match[4]) { - html = html.substring(match[0].length); - match[0].replace(START_TAG_REGEXP, parseStartTag); - } - chars = false; - } else { - // no ending tag found --- this piece should be encoded as an entity. - text += '<'; - html = html.substring(1); - } + // Check for the Safari 10.1 bug - which allows JS to run inside the SVG G element + inertBodyElement.innerHTML = '<svg><g onload="this.parentNode.remove()"></g></svg>'; + if (!inertBodyElement.querySelector('svg')) { + return getInertBodyElement_XHR; + } else { + // Check for the Firefox bug - which prevents the inner img JS from being sanitized + inertBodyElement.innerHTML = '<svg><p><style><img src="</style><img src=x onerror=alert(1)//">'; + if (inertBodyElement.querySelector('svg img')) { + return getInertBodyElement_DOMParser; + } else { + return getInertBodyElement_InertDocument; } + } - if (chars) { - index = html.indexOf("<"); - - text += index < 0 ? html : html.substring(0, index); - html = index < 0 ? "" : html.substring(index); - - if (handler.chars) handler.chars(decodeEntities(text)); + function getInertBodyElement_XHR(html) { + // We add this dummy element to ensure that the rest of the content is parsed as expected + // e.g. leading whitespace is maintained and tags like `<meta>` do not get hoisted to the `<head>` tag. + html = '<remove></remove>' + html; + try { + html = encodeURI(html); + } catch (e) { + return undefined; } - - } else { - // IE versions 9 and 10 do not understand the regex '[^]', so using a workaround with [\W\w]. - html = html.replace(new RegExp("([\\W\\w]*)<\\s*\\/\\s*" + stack.last() + "[^>]*>", 'i'), - function(all, text) { - text = text.replace(COMMENT_REGEXP, "$1").replace(CDATA_REGEXP, "$1"); - - if (handler.chars) handler.chars(decodeEntities(text)); - - return ""; - }); - - parseEndTag("", stack.last()); + var xhr = new window.XMLHttpRequest(); + xhr.responseType = 'document'; + xhr.open('GET', 'data:text/html;charset=utf-8,' + html, false); + xhr.send(null); + var body = xhr.response.body; + body.firstChild.remove(); + return body; } - if (html == last) { - throw $sanitizeMinErr('badparse', "The sanitizer was unable to parse the following block " + - "of html: {0}", html); + function getInertBodyElement_DOMParser(html) { + // We add this dummy element to ensure that the rest of the content is parsed as expected + // e.g. leading whitespace is maintained and tags like `<meta>` do not get hoisted to the `<head>` tag. + html = '<remove></remove>' + html; + try { + var body = new window.DOMParser().parseFromString(html, 'text/html').body; + body.firstChild.remove(); + return body; + } catch (e) { + return undefined; + } } - last = html; - } - // Clean up any remaining tags - parseEndTag(); + function getInertBodyElement_InertDocument(html) { + inertBodyElement.innerHTML = html; - function parseStartTag(tag, tagName, rest, unary) { - tagName = angular.lowercase(tagName); - if (blockElements[tagName]) { - while (stack.last() && inlineElements[stack.last()]) { - parseEndTag("", stack.last()); + // Support: IE 9-11 only + // strip custom-namespaced attributes on IE<=11 + if (document.documentMode) { + stripCustomNsAttrs(inertBodyElement); } - } - if (optionalEndTagElements[tagName] && stack.last() == tagName) { - parseEndTag("", tagName); + return inertBodyElement; } - - unary = voidElements[tagName] || !!unary; - - if (!unary) { - stack.push(tagName); + })(window, window.document); + + /** + * @example + * htmlParser(htmlString, { + * start: function(tag, attrs) {}, + * end: function(tag) {}, + * chars: function(text) {}, + * comment: function(text) {} + * }); + * + * @param {string} html string + * @param {object} handler + */ + function htmlParserImpl(html, handler) { + if (html === null || html === undefined) { + html = ''; + } else if (typeof html !== 'string') { + html = '' + html; } - var attrs = {}; - - rest.replace(ATTR_REGEXP, - function(match, name, doubleQuotedValue, singleQuotedValue, unquotedValue) { - var value = doubleQuotedValue - || singleQuotedValue - || unquotedValue - || ''; + var inertBodyElement = getInertBodyElement(html); + if (!inertBodyElement) return ''; - attrs[name] = decodeEntities(value); - }); - if (handler.start) handler.start(tagName, attrs, unary); - } + //mXSS protection + var mXSSAttempts = 5; + do { + if (mXSSAttempts === 0) { + throw $sanitizeMinErr('uinput', 'Failed to sanitize html because the input is unstable'); + } + mXSSAttempts--; + + // trigger mXSS if it is going to happen by reading and writing the innerHTML + html = inertBodyElement.innerHTML; + inertBodyElement = getInertBodyElement(html); + } while (html !== inertBodyElement.innerHTML); + + var node = inertBodyElement.firstChild; + while (node) { + switch (node.nodeType) { + case 1: // ELEMENT_NODE + handler.start(node.nodeName.toLowerCase(), attrToMap(node.attributes)); + break; + case 3: // TEXT NODE + handler.chars(node.textContent); + break; + } - function parseEndTag(tag, tagName) { - var pos = 0, i; - tagName = angular.lowercase(tagName); - if (tagName) { - // Find the closest opened tag of the same type - for (pos = stack.length - 1; pos >= 0; pos--) { - if (stack[pos] == tagName) break; + var nextNode; + if (!(nextNode = node.firstChild)) { + if (node.nodeType === 1) { + handler.end(node.nodeName.toLowerCase()); + } + nextNode = getNonDescendant('nextSibling', node); + if (!nextNode) { + while (nextNode == null) { + node = getNonDescendant('parentNode', node); + if (node === inertBodyElement) break; + nextNode = getNonDescendant('nextSibling', node); + if (node.nodeType === 1) { + handler.end(node.nodeName.toLowerCase()); + } + } + } } + node = nextNode; } - if (pos >= 0) { - // Close all the open elements, up the stack - for (i = stack.length - 1; i >= pos; i--) - if (handler.end) handler.end(stack[i]); - - // Remove the open elements from the stack - stack.length = pos; + while ((node = inertBodyElement.firstChild)) { + inertBodyElement.removeChild(node); } } -} -var hiddenPre=document.createElement("pre"); -/** - * decodes all entities into regular string - * @param value - * @returns {string} A string with decoded entities. - */ -function decodeEntities(value) { - if (!value) { return ''; } + function attrToMap(attrs) { + var map = {}; + for (var i = 0, ii = attrs.length; i < ii; i++) { + var attr = attrs[i]; + map[attr.name] = attr.value; + } + return map; + } - hiddenPre.innerHTML = value.replace(/</g,"<"); - // innerText depends on styling as it doesn't display hidden elements. - // Therefore, it's better to use textContent not to cause unnecessary reflows. - return hiddenPre.textContent; -} -/** - * Escapes all potentially dangerous characters, so that the - * resulting string can be safely inserted into attribute or - * element text. - * @param value - * @returns {string} escaped text - */ -function encodeEntities(value) { - return value. - replace(/&/g, '&'). - replace(SURROGATE_PAIR_REGEXP, function(value) { - var hi = value.charCodeAt(0); - var low = value.charCodeAt(1); - return '&#' + (((hi - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000) + ';'; - }). - replace(NON_ALPHANUMERIC_REGEXP, function(value) { - return '&#' + value.charCodeAt(0) + ';'; - }). - replace(/</g, '<'). - replace(/>/g, '>'); -} + /** + * Escapes all potentially dangerous characters, so that the + * resulting string can be safely inserted into attribute or + * element text. + * @param value + * @returns {string} escaped text + */ + function encodeEntities(value) { + return value. + replace(/&/g, '&'). + replace(SURROGATE_PAIR_REGEXP, function(value) { + var hi = value.charCodeAt(0); + var low = value.charCodeAt(1); + return '&#' + (((hi - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000) + ';'; + }). + replace(NON_ALPHANUMERIC_REGEXP, function(value) { + return '&#' + value.charCodeAt(0) + ';'; + }). + replace(/</g, '<'). + replace(/>/g, '>'); + } -/** - * create an HTML/XML writer which writes to buffer - * @param {Array} buf use buf.jain('') to get out sanitized html string - * @returns {object} in the form of { - * start: function(tag, attrs, unary) {}, - * end: function(tag) {}, - * chars: function(text) {}, - * comment: function(text) {} - * } - */ -function htmlSanitizeWriter(buf, uriValidator) { - var ignore = false; - var out = angular.bind(buf, buf.push); - return { - start: function(tag, attrs, unary) { - tag = angular.lowercase(tag); - if (!ignore && specialElements[tag]) { - ignore = tag; - } - if (!ignore && validElements[tag] === true) { - out('<'); - out(tag); - angular.forEach(attrs, function(value, key) { - var lkey=angular.lowercase(key); - var isImage = (tag === 'img' && lkey === 'src') || (lkey === 'background'); - if (validAttrs[lkey] === true && - (uriAttrs[lkey] !== true || uriValidator(value, isImage))) { - out(' '); - out(key); - out('="'); - out(encodeEntities(value)); - out('"'); - } - }); - out(unary ? '/>' : '>'); - } - }, - end: function(tag) { - tag = angular.lowercase(tag); - if (!ignore && validElements[tag] === true) { + /** + * create an HTML/XML writer which writes to buffer + * @param {Array} buf use buf.join('') to get out sanitized html string + * @returns {object} in the form of { + * start: function(tag, attrs) {}, + * end: function(tag) {}, + * chars: function(text) {}, + * comment: function(text) {} + * } + */ + function htmlSanitizeWriterImpl(buf, uriValidator) { + var ignoreCurrentElement = false; + var out = bind(buf, buf.push); + return { + start: function(tag, attrs) { + tag = lowercase(tag); + if (!ignoreCurrentElement && blockedElements[tag]) { + ignoreCurrentElement = tag; + } + if (!ignoreCurrentElement && validElements[tag] === true) { + out('<'); + out(tag); + forEach(attrs, function(value, key) { + var lkey = lowercase(key); + var isImage = (tag === 'img' && lkey === 'src') || (lkey === 'background'); + if (validAttrs[lkey] === true && + (uriAttrs[lkey] !== true || uriValidator(value, isImage))) { + out(' '); + out(key); + out('="'); + out(encodeEntities(value)); + out('"'); + } + }); + out('>'); + } + }, + end: function(tag) { + tag = lowercase(tag); + if (!ignoreCurrentElement && validElements[tag] === true && voidElements[tag] !== true) { out('</'); out(tag); out('>'); } - if (tag == ignore) { - ignore = false; + // eslint-disable-next-line eqeqeq + if (tag == ignoreCurrentElement) { + ignoreCurrentElement = false; } }, - chars: function(chars) { - if (!ignore) { + chars: function(chars) { + if (!ignoreCurrentElement) { out(encodeEntities(chars)); } } - }; + }; + } + + + /** + * When IE9-11 comes across an unknown namespaced attribute e.g. 'xlink:foo' it adds 'xmlns:ns1' attribute to declare + * ns1 namespace and prefixes the attribute with 'ns1' (e.g. 'ns1:xlink:foo'). This is undesirable since we don't want + * to allow any of these custom attributes. This method strips them all. + * + * @param node Root element to process + */ + function stripCustomNsAttrs(node) { + while (node) { + if (node.nodeType === window.Node.ELEMENT_NODE) { + var attrs = node.attributes; + for (var i = 0, l = attrs.length; i < l; i++) { + var attrNode = attrs[i]; + var attrName = attrNode.name.toLowerCase(); + if (attrName === 'xmlns:ns1' || attrName.lastIndexOf('ns1:', 0) === 0) { + node.removeAttributeNode(attrNode); + i--; + l--; + } + } + } + + var nextNode = node.firstChild; + if (nextNode) { + stripCustomNsAttrs(nextNode); + } + + node = getNonDescendant('nextSibling', node); + } + } + + function getNonDescendant(propName, node) { + // An element is clobbered if its `propName` property points to one of its descendants + var nextNode = node[propName]; + if (nextNode && nodeContains.call(node, nextNode)) { + throw $sanitizeMinErr('elclob', 'Failed to sanitize html because the element is clobbered: {0}', node.outerHTML || node.outerText); + } + return nextNode; + } } +function sanitizeText(chars) { + var buf = []; + var writer = htmlSanitizeWriter(buf, noop); + writer.chars(chars); + return buf.join(''); +} -// define ngSanitize module and register $sanitize service -angular.module('ngSanitize', []).provider('$sanitize', $SanitizeProvider); -/* global sanitizeText: false */ +// define ngSanitize module and register $sanitize service +angular.module('ngSanitize', []) + .provider('$sanitize', $SanitizeProvider) + .info({ angularVersion: '1.6.5' }); /** * @ngdoc filter @@ -535,40 +612,39 @@ angular.module('ngSanitize', []).provider('$sanitize', $SanitizeProvider); * @kind function * * @description - * Finds links in text input and turns them into html links. Supports http/https/ftp/mailto and + * Finds links in text input and turns them into html links. Supports `http/https/ftp/mailto` and * plain email address links. * * Requires the {@link ngSanitize `ngSanitize`} module to be installed. * * @param {string} text Input text. - * @param {string} target Window (_blank|_self|_parent|_top) or named frame to open links in. - * @returns {string} Html-linkified text. + * @param {string} target Window (`_blank|_self|_parent|_top`) or named frame to open links in. + * @param {object|function(url)} [attributes] Add custom attributes to the link element. + * + * Can be one of: + * + * - `object`: A map of attributes + * - `function`: Takes the url as a parameter and returns a map of attributes + * + * If the map of attributes contains a value for `target`, it overrides the value of + * the target parameter. + * + * + * @returns {string} Html-linkified and {@link $sanitize sanitized} text. * * @usage <span ng-bind-html="linky_expression | linky"></span> * * @example - <example module="linkyExample" deps="angular-sanitize.js"> + <example module="linkyExample" deps="angular-sanitize.js" name="linky-filter"> <file name="index.html"> - <script> - angular.module('linkyExample', ['ngSanitize']) - .controller('ExampleController', ['$scope', function($scope) { - $scope.snippet = - 'Pretty text with some links:\n'+ - 'http://angularjs.org/,\n'+ - 'mailto:us@somewhere.org,\n'+ - 'another@somewhere.org,\n'+ - 'and one more: ftp://127.0.0.1/.'; - $scope.snippetWithTarget = 'http://angularjs.org/'; - }]); - </script> <div ng-controller="ExampleController"> Snippet: <textarea ng-model="snippet" cols="60" rows="3"></textarea> <table> <tr> - <td>Filter</td> - <td>Source</td> - <td>Rendered</td> + <th>Filter</th> + <th>Source</th> + <th>Rendered</th> </tr> <tr id="linky-filter"> <td>linky filter</td> @@ -582,10 +658,19 @@ angular.module('ngSanitize', []).provider('$sanitize', $SanitizeProvider); <tr id="linky-target"> <td>linky target</td> <td> - <pre><div ng-bind-html="snippetWithTarget | linky:'_blank'"><br></div></pre> + <pre><div ng-bind-html="snippetWithSingleURL | linky:'_blank'"><br></div></pre> </td> <td> - <div ng-bind-html="snippetWithTarget | linky:'_blank'"></div> + <div ng-bind-html="snippetWithSingleURL | linky:'_blank'"></div> + </td> + </tr> + <tr id="linky-custom-attributes"> + <td>linky custom attributes</td> + <td> + <pre><div ng-bind-html="snippetWithSingleURL | linky:'_self':{rel: 'nofollow'}"><br></div></pre> + </td> + <td> + <div ng-bind-html="snippetWithSingleURL | linky:'_self':{rel: 'nofollow'}"></div> </td> </tr> <tr id="escaped-html"> @@ -595,6 +680,18 @@ angular.module('ngSanitize', []).provider('$sanitize', $SanitizeProvider); </tr> </table> </file> + <file name="script.js"> + angular.module('linkyExample', ['ngSanitize']) + .controller('ExampleController', ['$scope', function($scope) { + $scope.snippet = + 'Pretty text with some links:\n' + + 'http://angularjs.org/,\n' + + 'mailto:us@somewhere.org,\n' + + 'another@somewhere.org,\n' + + 'and one more: ftp://127.0.0.1/.'; + $scope.snippetWithSingleURL = 'http://angularjs.org/'; + }]); + </file> <file name="protractor.js" type="protractor"> it('should linkify the snippet with urls', function() { expect(element(by.id('linky-filter')).element(by.binding('snippet | linky')).getText()). @@ -622,10 +719,17 @@ angular.module('ngSanitize', []).provider('$sanitize', $SanitizeProvider); it('should work with the target property', function() { expect(element(by.id('linky-target')). - element(by.binding("snippetWithTarget | linky:'_blank'")).getText()). + element(by.binding("snippetWithSingleURL | linky:'_blank'")).getText()). toBe('http://angularjs.org/'); expect(element(by.css('#linky-target a')).getAttribute('target')).toEqual('_blank'); }); + + it('should optionally add custom attributes', function() { + expect(element(by.id('linky-custom-attributes')). + element(by.binding("snippetWithSingleURL | linky:'_self':{rel: 'nofollow'}")).getText()). + toBe('http://angularjs.org/'); + expect(element(by.css('#linky-custom-attributes a')).getAttribute('rel')).toEqual('nofollow'); + }); </file> </example> */ @@ -634,8 +738,21 @@ angular.module('ngSanitize').filter('linky', ['$sanitize', function($sanitize) { /((ftp|https?):\/\/|(www\.)|(mailto:)?[A-Za-z0-9._%+-]+@)\S*[^\s.;,(){}<>"\u201d\u2019]/i, MAILTO_REGEXP = /^mailto:/i; - return function(text, target) { - if (!text) return text; + var linkyMinErr = angular.$$minErr('linky'); + var isDefined = angular.isDefined; + var isFunction = angular.isFunction; + var isObject = angular.isObject; + var isString = angular.isString; + + return function(text, target, attributes) { + if (text == null || text === '') return text; + if (!isString(text)) throw linkyMinErr('notstring', 'Expected string but received: {0}', text); + + var attributesFn = + isFunction(attributes) ? attributes : + isObject(attributes) ? function getAttributesObject() {return attributes;} : + function getEmptyAttributesObject() {return {};}; + var match; var raw = text; var html = []; @@ -664,8 +781,14 @@ angular.module('ngSanitize').filter('linky', ['$sanitize', function($sanitize) { } function addLink(url, text) { + var key, linkAttributes = attributesFn(url); html.push('<a '); - if (angular.isDefined(target)) { + + for (key in linkAttributes) { + html.push(key + '="' + linkAttributes[key] + '" '); + } + + if (isDefined(target) && !('target' in linkAttributes)) { html.push('target="', target, '" '); |