/** * @license AngularJS v1.4.3 * (c) 2010-2015 Google, Inc. http://angularjs.org * License: MIT */ (function(window, angular, undefined) {'use strict'; /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Any commits to this file should be reviewed with security in mind. * * Changes to this file can potentially create security vulnerabilities. * * An approval from 2 Core members with history of modifying * * this file is required. * * * * Does the change somehow allow for arbitrary javascript to be executed? * * Or allows for someone to change the prototype of built-in objects? * * Or gives undesired access to variables likes document or window? * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ var $sanitizeMinErr = angular.$$minErr('$sanitize'); /** * @ngdoc module * @name ngSanitize * @description * * # ngSanitize * * The `ngSanitize` module provides functionality to sanitize HTML. * * *
* * See {@link ngSanitize.$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 $sanitize * @kind function * * @description * The input is sanitized by parsing the HTML into tokens. All safe tokens (from a whitelist) are * then serialized back to properly escaped html string. This means that no unsafe input can make * it into the returned string, however, since our parser is more strict than a typical browser * parser, it's possible that some obscure input, which would be recognized as valid HTML by a * browser, won't make it through the sanitizer. The input may also contain SVG markup. * The whitelist is configured using the functions `aHrefSanitizationWhitelist` and * `imgSrcSanitizationWhitelist` of {@link ng.$compileProvider `$compileProvider`}. * * @param {string} html HTML input. * @returns {string} Sanitized HTML. * * @example
Snippet:
Directive How Source Rendered
ng-bind-html Automatically uses $sanitize
<div ng-bind-html="snippet">
</div>
ng-bind-html Bypass $sanitize by explicitly trusting the dangerous value
<div ng-bind-html="deliberatelyTrustDangerousSnippet()">
</div>
ng-bind Automatically escapes
<div ng-bind="snippet">
</div>
it('should sanitize the html snippet by default', function() { expect(element(by.css('#bind-html-with-sanitize div')).getInnerHtml()). toBe('

an html\nclick here\nsnippet

'); }); it('should inline raw snippet if bound to a trusted value', function() { expect(element(by.css('#bind-html-with-trust div')).getInnerHtml()). toBe("

an html\n" + "click here\n" + "snippet

"); }); it('should escape snippet without any filter', function() { expect(element(by.css('#bind-default div')).getInnerHtml()). toBe("<p style=\"color:blue\">an html\n" + "<em onmouseover=\"this.textContent='PWN3D!'\">click here</em>\n" + "snippet</p>"); }); it('should update', function() { element(by.model('snippet')).clear(); element(by.model('snippet')).sendKeys('new text'); expect(element(by.css('#bind-html-with-sanitize div')).getInnerHtml()). toBe('new text'); expect(element(by.css('#bind-html-with-trust div')).getInnerHtml()).toBe( 'new text'); expect(element(by.css('#bind-default div')).getInnerHtml()).toBe( "new <b onclick=\"alert(1)\">text</b>"); });
*/ function $SanitizeProvider() { this.$get = ['$$sanitizeUri', function($$sanitizeUri) { return function(html) { var buf = []; htmlParser(html, htmlSanitizeWriter(buf, function(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 = /^/g, DOCTYPE_REGEXP = /]*?)>/i, CDATA_REGEXP = //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 = ''; } else { html = '' + html; } } var index, chars, match, stack = [], last = html, text; stack.last = function() { return stack[stack.length - 1]; }; while (html) { text = ''; chars = true; // Make sure we're not in a script or style element if (!stack.last() || !specialElements[stack.last()]) { // Comment if (html.indexOf("", 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); 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; } // start tag } else if (BEGIN_TAG_REGEXP.test(html)) { match = html.match(START_TAG_REGEXP); 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); } } 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)); } } 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()); } if (html == last) { throw $sanitizeMinErr('badparse', "The sanitizer was unable to parse the following block " + "of html: {0}", html); } last = html; } // Clean up any remaining tags parseEndTag(); function parseStartTag(tag, tagName, rest, unary) { tagName = angular.lowercase(tagName); if (blockElements[tagName]) { while (stack.last() && inlineElements[stack.last()]) { parseEndTag("", stack.last()); } } if (optionalEndTagElements[tagName] && stack.last() == tagName) { parseEndTag("", tagName); } unary = voidElements[tagName] || !!unary; if (!unary) { stack.push(tagName); } var attrs = {}; rest.replace(ATTR_REGEXP, function(match, name, doubleQuotedValue, singleQuotedValue, unquotedValue) { var value = doubleQuotedValue || singleQuotedValue || unquotedValue || ''; attrs[name] = decodeEntities(value); }); if (handler.start) handler.start(tagName, attrs, unary); } 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; } } 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; } } } 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 ''; } hiddenPre.innerHTML = value.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) { out(''); } if (tag == ignore) { ignore = false; } }, chars: function(chars) { if (!ignore) { out(encodeEntities(chars)); } } }; } // define ngSanitize module and register $sanitize service angular.module('ngSanitize', []).provider('$sanitize', $SanitizeProvider); /* global sanitizeText: false */ /** * @ngdoc filter * @name linky * @kind function * * @description * 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. * * @usage * * @example
Snippet:
Filter Source Rendered
linky filter
<div ng-bind-html="snippet | linky">
</div>
linky target
<div ng-bind-html="snippetWithTarget | linky:'_blank'">
</div>
no filter
<div ng-bind="snippet">
</div>
it('should linkify the snippet with urls', function() { expect(element(by.id('linky-filter')).element(by.binding('snippet | linky')).getText()). toBe('Pretty text with some links: http://angularjs.org/, us@somewhere.org, ' + 'another@somewhere.org, and one more: ftp://127.0.0.1/.'); expect(element.all(by.css('#linky-filter a')).count()).toEqual(4); }); it('should not linkify snippet without the linky filter', function() { expect(element(by.id('escaped-html')).element(by.binding('snippet')).getText()). toBe('Pretty text with some links: http://angularjs.org/, mailto:us@somewhere.org, ' + 'another@somewhere.org, and one more: ftp://127.0.0.1/.'); expect(element.all(by.css('#escaped-html a')).count()).toEqual(0); }); it('should update', function() { element(by.model('snippet')).clear(); element(by.model('snippet')).sendKeys('new http://link.'); expect(element(by.id('linky-filter')).element(by.binding('snippet | linky')).getText()). toBe('new http://link.'); expect(element.all(by.css('#linky-filter a')).count()).toEqual(1); expect(element(by.id('escaped-html')).element(by.binding('snippet')).getText()) .toBe('new http://link.'); }); it('should work with the target property', function() { expect(element(by.id('linky-target')). element(by.binding("snippetWithTarget | linky:'_blank'")).getText()). toBe('http://angularjs.org/'); expect(element(by.css('#linky-target a')).getAttribute('target')).toEqual('_blank'); }); */ angular.module('ngSanitize').filter('linky', ['$sanitize', function($sanitize) { var LINKY_URL_REGEXP = /((ftp|https?):\/\/|(www\.)|(mailto:)?[A-Za-z0-9._%+-]+@)\S*[^\s.;,(){}<>"”’]/i, MAILTO_REGEXP = /^mailto:/i; return function(text, target) { if (!text) return text; var match; var raw = text; var html = []; var url; var i; while ((match = raw.match(LINKY_URL_REGEXP))) { // We can not end in these as they are sometimes found at the end of the sentence url = match[0]; // if we did not match ftp/http/www/mailto then assume mailto if (!match[2] && !match[4]) { url = (match[3] ? 'http://' : 'mailto:') + url; } i = match.index; addText(raw.substr(0, i)); addLink(url, match[0].replace(MAILTO_REGEXP, '')); raw = raw.substring(i + match[0].length); } addText(raw); return $sanitize(html.join('')); function addText(text) { if (!text) { return; } html.push(sanitizeText(text)); } function addLink(url, text) { html.push(''); addText(text); html.push(''); } }; }]); })(window, window.angular);