/** * @license AngularJS v1.2.13 * (c) 2010-2014 Google, Inc. http://angularjs.org * License: MIT */ (function(window, angular, undefined) {'use strict'; var $sanitizeMinErr = angular.$$minErr('$sanitize'); /** * @ngdoc overview * @name ngSanitize * @description * * # ngSanitize * * The `ngSanitize` module provides functionality to sanitize HTML. * * {@installModule sanitize} * *
* * See {@link ngSanitize.$sanitize `$sanitize`} for usage. */ /* * HTML Parser By Misko Hevery (misko@hevery.com) * based on: HTML Parser By John Resig (ejohn.org) * Original code by Erik Arvidsson, Mozilla Public License * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js * * // Use like so: * htmlParser(htmlString, { * start: function(tag, attrs, unary) {}, * end: function(tag) {}, * chars: function(text) {}, * comment: function(text) {} * }); * */ /** * @ngdoc service * @name ngSanitize.$sanitize * @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 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 = /^<\s*([\w:-]+)((?:\s+[\w:-]+(?:\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|[^>\s]+))?)*)\s*(\/?)\s*>/, END_TAG_REGEXP = /^<\s*\/\s*([\w:-]+)[^>]*>/, ATTR_REGEXP = /([\w:-]+)(?:\s*=\s*(?:(?:"((?:[^"])*)")|(?:'((?:[^'])*)')|([^>\s]+)))?/g, BEGIN_TAG_REGEXP = /^/g, DOCTYPE_REGEXP = /]*?)>/i, CDATA_REGEXP = //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")); // Special Elements (can contain anything) var specialElements = makeMap("script,style"); var validElements = angular.extend({}, voidElements, blockElements, inlineElements, optionalEndTagElements); //Attributes that have href and hence need to be sanitized var uriAttrs = makeMap("background,cite,href,longdesc,src,usemap"); var validAttrs = angular.extend({}, uriAttrs, 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,target,title,type,'+ 'valign,value,vspace,width')); function makeMap(str) { var obj = {}, items = str.split(','), i; for (i = 0; i < items.length; i++) obj[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 ) { var index, chars, match, stack = [], last = html; stack.last = function() { return stack[ stack.length - 1 ]; }; while ( html ) { 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 ) { html = html.substring( match[0].length ); match[0].replace( START_TAG_REGEXP, parseStartTag ); chars = false; } } if ( chars ) { index = html.indexOf("<"); var text = index < 0 ? html : html.substring( 0, index ); html = index < 0 ? "" : html.substring( index ); if (handler.chars) handler.chars( decodeEntities(text) ); } } else { html = html.replace(new RegExp("(.*)<\\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 $sanitizeMinErr('badparse', "The sanitizer was unable to parse the following block " + "of html: {0}", html); } last = html; } // Clean up any remaining tags parseEndTag(); function parseStartTag( tag, tagName, rest, unary ) { tagName = angular.lowercase(tagName); if ( blockElements[ tagName ] ) { while ( stack.last() && inlineElements[ stack.last() ] ) { parseEndTag( "", stack.last() ); } } if ( optionalEndTagElements[ tagName ] && stack.last() == tagName ) { parseEndTag( "", tagName ); } unary = voidElements[ tagName ] || !!unary; if ( !unary ) stack.push( tagName ); var attrs = {}; rest.replace(ATTR_REGEXP, function(match, name, doubleQuotedValue, singleQuotedValue, unquotedValue) { var value = doubleQuotedValue || singleQuotedValue || unquotedValue || ''; attrs[name] = decodeEntities(value); }); if (handler.start) handler.start( tagName, attrs, unary ); } function parseEndTag( tag, tagName ) { var pos = 0, i; tagName = angular.lowercase(tagName); if ( tagName ) // Find the closest opened tag of the same type for ( pos = stack.length - 1; pos >= 0; pos-- ) if ( stack[ pos ] == tagName ) break; if ( pos >= 0 ) { // Close all the open elements, up the stack for ( i = stack.length - 1; i >= pos; i-- ) if (handler.end) handler.end( stack[ i ] ); // Remove the open elements from the stack stack.length = pos; } } } var hiddenPre=document.createElement("pre"); var spaceRe = /^(\s*)([\s\S]*?)(\s*)$/; /** * decodes all entities into regular string * @param value * @returns {string} A string with decoded entities. */ function decodeEntities(value) { if (!value) { return ''; } // Note: IE8 does not preserve spaces at the start/end of innerHTML // so we must capture them and reattach them afterward var parts = spaceRe.exec(value); var spaceBefore = parts[1]; var spaceAfter = parts[3]; var content = parts[2]; if (content) { hiddenPre.innerHTML=content.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 ngSanitize.filter:linky * @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?):\/\/|(mailto:)?[A-Za-z0-9._%+-]+@)\S*[^\s.;,(){}<>]/, MAILTO_REGEXP = /^mailto:/; 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/mailto then assume mailto if (match[2] == match[3]) url = '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);