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Diffstat (limited to 'syweb/webclient/js/angular-sanitize.js')
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diff --git a/syweb/webclient/js/angular-sanitize.js b/syweb/webclient/js/angular-sanitize.js new file mode 100644 index 0000000000..ec46895f68 --- /dev/null +++ b/syweb/webclient/js/angular-sanitize.js @@ -0,0 +1,647 @@ +/** + * @license AngularJS v1.3.0-rc.1 + * (c) 2010-2014 Google, Inc. http://angularjs.org + * License: MIT + */ +(function(window, angular, undefined) {'use strict'; + +var $sanitizeMinErr = angular.$$minErr('$sanitize'); + +/** + * @ngdoc module + * @name ngSanitize + * @description + * + * # ngSanitize + * + * The `ngSanitize` module provides functionality to sanitize HTML. + * + * + * <div doc-module-components="ngSanitize"></div> + * + * 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 whitelist is configured using the functions `aHrefSanitizationWhitelist` and + * `imgSrcSanitizationWhitelist` of {@link ng.$compileProvider `$compileProvider`}. + * + * @param {string} html Html input. + * @returns {string} Sanitized html. + * + * @example + <example module="sanitizeExample" deps="angular-sanitize.js"> + <file name="index.html"> + <script> + angular.module('sanitizeExample', ['ngSanitize']) + .controller('ExampleController', ['$scope', '$sce', function($scope, $sce) { + $scope.snippet = + '<p style="color:blue">an html\n' + + '<em onmouseover="this.textContent=\'PWN3D!\'">click here</em>\n' + + 'snippet</p>'; + $scope.deliberatelyTrustDangerousSnippet = function() { + return $sce.trustAsHtml($scope.snippet); + }; + }]); + </script> + <div ng-controller="ExampleController"> + Snippet: <textarea ng-model="snippet" cols="60" rows="3"></textarea> + <table> + <tr> + <td>Directive</td> + <td>How</td> + <td>Source</td> + <td>Rendered</td> + </tr> + <tr id="bind-html-with-sanitize"> + <td>ng-bind-html</td> + <td>Automatically uses $sanitize</td> + <td><pre><div ng-bind-html="snippet"><br/></div></pre></td> + <td><div ng-bind-html="snippet"></div></td> + </tr> + <tr id="bind-html-with-trust"> + <td>ng-bind-html</td> + <td>Bypass $sanitize by explicitly trusting the dangerous value</td> + <td> + <pre><div ng-bind-html="deliberatelyTrustDangerousSnippet()"> +</div></pre> + </td> + <td><div ng-bind-html="deliberatelyTrustDangerousSnippet()"></div></td> + </tr> + <tr id="bind-default"> + <td>ng-bind</td> + <td>Automatically escapes</td> + <td><pre><div ng-bind="snippet"><br/></div></pre></td> + <td><div ng-bind="snippet"></div></td> + </tr> + </table> + </div> + </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()). + 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()). + 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()). + 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 <b onclick="alert(1)">text</b>'); + expect(element(by.css('#bind-html-with-sanitize div')).getInnerHtml()). + toBe('new <b>text</b>'); + expect(element(by.css('#bind-html-with-trust div')).getInnerHtml()).toBe( + 'new <b onclick="alert(1)">text</b>'); + expect(element(by.css('#bind-default div')).getInnerHtml()).toBe( + "new <b onclick=\"alert(1)\">text</b>"); + }); + </file> + </example> + */ +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 = /^</, + 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")); + + +// 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 ) { + 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("<!--") === 0 ) { + // comments containing -- are not allowed unless they terminate the comment + index = html.indexOf("--", 4); + + 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 ); + + 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 { + 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,"<"); + // innerText depends on styling as it doesn't display hidden elements. + // Therefore, it's better to use textContent not to cause unnecessary + // reflows. However, IE<9 don't support textContent so the innerText + // fallback is necessary. + content = 'textContent' in hiddenPre ? + hiddenPre.textContent : hiddenPre.innerText; + } + return spaceBefore + content + spaceAfter; +} + +/** + * 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) { + out('</'); + out(tag); + 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', $SanitizeProvider); + +/* global sanitizeText: false */ + +/** + * @ngdoc filter + * @name linky + * @kind function + * + * @description + * Finds links in text input and turns them into html links. Supports http/https/ftp/mailto and + * plain email address links. + * + * Requires the {@link ngSanitize `ngSanitize`} module to be installed. + * + * @param {string} text Input text. + * @param {string} target Window (_blank|_self|_parent|_top) or named frame to open links in. + * @returns {string} Html-linkified text. + * + * @usage + <span ng-bind-html="linky_expression | linky"></span> + * + * @example + <example module="linkyExample" deps="angular-sanitize.js"> + <file name="index.html"> + <script> + angular.module('linkyExample', ['ngSanitize']) + .controller('ExampleController', ['$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> + </tr> + <tr id="linky-filter"> + <td>linky filter</td> + <td> + <pre><div ng-bind-html="snippet | linky"><br></div></pre> + </td> + <td> + <div ng-bind-html="snippet | linky"></div> + </td> + </tr> + <tr id="linky-target"> + <td>linky target</td> + <td> + <pre><div ng-bind-html="snippetWithTarget | linky:'_blank'"><br></div></pre> + </td> + <td> + <div ng-bind-html="snippetWithTarget | linky:'_blank'"></div> + </td> + </tr> + <tr id="escaped-html"> + <td>no filter</td> + <td><pre><div ng-bind="snippet"><br></div></pre></td> + <td><div ng-bind="snippet"></div></td> + </tr> + </table> + </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()). + 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'); + }); + </file> + </example> + */ +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('<a '); + if (angular.isDefined(target)) { + html.push('target="'); + html.push(target); + html.push('" '); + } + html.push('href="'); + html.push(url); + html.push('">'); + addText(text); + html.push('</a>'); + } + }; +}]); + + +})(window, window.angular); |