/**
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* @license AngularJS v1.5.7
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* (c) 2010-2016 Google, Inc. http://angularjs.org
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* License: MIT
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*/
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(function(window, angular) {'use strict';
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Any commits to this file should be reviewed with security in mind. *
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* Changes to this file can potentially create security vulnerabilities. *
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* An approval from 2 Core members with history of modifying *
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* this file is required. *
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* *
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* Does the change somehow allow for arbitrary javascript to be executed? *
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* Or allows for someone to change the prototype of built-in objects? *
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* Or gives undesired access to variables likes document or window? *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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var $sanitizeMinErr = angular.$$minErr('$sanitize');
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/**
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* @ngdoc module
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* @name ngSanitize
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* @description
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*
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* # ngSanitize
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*
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* The `ngSanitize` module provides functionality to sanitize HTML.
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*
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*
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* <div doc-module-components="ngSanitize"></div>
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*
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* See {@link ngSanitize.$sanitize `$sanitize`} for usage.
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*/
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/**
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* @ngdoc service
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* @name $sanitize
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* @kind function
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*
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* @description
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* Sanitizes an html string by stripping all potentially dangerous tokens.
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*
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* The input is sanitized by parsing the HTML into tokens. All safe tokens (from a whitelist) are
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* then serialized back to properly escaped html string. This means that no unsafe input can make
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* it into the returned string.
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*
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* The whitelist for URL sanitization of attribute values is configured using the functions
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* `aHrefSanitizationWhitelist` and `imgSrcSanitizationWhitelist` of {@link ng.$compileProvider
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* `$compileProvider`}.
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*
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* The input may also contain SVG markup if this is enabled via {@link $sanitizeProvider}.
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*
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* @param {string} html HTML input.
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* @returns {string} Sanitized HTML.
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*
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* @example
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<example module="sanitizeExample" deps="angular-sanitize.js">
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<file name="index.html">
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<script>
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angular.module('sanitizeExample', ['ngSanitize'])
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.controller('ExampleController', ['$scope', '$sce', function($scope, $sce) {
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$scope.snippet =
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'<p style="color:blue">an html\n' +
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'<em onmouseover="this.textContent=\'PWN3D!\'">click here</em>\n' +
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'snippet</p>';
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$scope.deliberatelyTrustDangerousSnippet = function() {
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return $sce.trustAsHtml($scope.snippet);
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};
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}]);
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</script>
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<div ng-controller="ExampleController">
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Snippet: <textarea ng-model="snippet" cols="60" rows="3"></textarea>
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<table>
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<tr>
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<td>Directive</td>
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<td>How</td>
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<td>Source</td>
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<td>Rendered</td>
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</tr>
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<tr id="bind-html-with-sanitize">
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<td>ng-bind-html</td>
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<td>Automatically uses $sanitize</td>
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<td><pre><div ng-bind-html="snippet"><br/></div></pre></td>
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<td><div ng-bind-html="snippet"></div></td>
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</tr>
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<tr id="bind-html-with-trust">
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<td>ng-bind-html</td>
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<td>Bypass $sanitize by explicitly trusting the dangerous value</td>
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<td>
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<pre><div ng-bind-html="deliberatelyTrustDangerousSnippet()">
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</div></pre>
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</td>
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<td><div ng-bind-html="deliberatelyTrustDangerousSnippet()"></div></td>
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</tr>
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<tr id="bind-default">
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<td>ng-bind</td>
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<td>Automatically escapes</td>
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<td><pre><div ng-bind="snippet"><br/></div></pre></td>
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<td><div ng-bind="snippet"></div></td>
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</tr>
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</table>
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</div>
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</file>
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<file name="protractor.js" type="protractor">
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it('should sanitize the html snippet by default', function() {
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expect(element(by.css('#bind-html-with-sanitize div')).getInnerHtml()).
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toBe('<p>an html\n<em>click here</em>\nsnippet</p>');
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});
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it('should inline raw snippet if bound to a trusted value', function() {
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expect(element(by.css('#bind-html-with-trust div')).getInnerHtml()).
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toBe("<p style=\"color:blue\">an html\n" +
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"<em onmouseover=\"this.textContent='PWN3D!'\">click here</em>\n" +
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"snippet</p>");
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});
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it('should escape snippet without any filter', function() {
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expect(element(by.css('#bind-default div')).getInnerHtml()).
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toBe("<p style=\"color:blue\">an html\n" +
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"<em onmouseover=\"this.textContent='PWN3D!'\">click here</em>\n" +
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"snippet</p>");
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});
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it('should update', function() {
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element(by.model('snippet')).clear();
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element(by.model('snippet')).sendKeys('new <b onclick="alert(1)">text</b>');
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expect(element(by.css('#bind-html-with-sanitize div')).getInnerHtml()).
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toBe('new <b>text</b>');
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expect(element(by.css('#bind-html-with-trust div')).getInnerHtml()).toBe(
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'new <b onclick="alert(1)">text</b>');
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expect(element(by.css('#bind-default div')).getInnerHtml()).toBe(
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"new <b onclick=\"alert(1)\">text</b>");
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});
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</file>
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</example>
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*/
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/**
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* @ngdoc provider
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* @name $sanitizeProvider
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*
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* @description
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* Creates and configures {@link $sanitize} instance.
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*/
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function $SanitizeProvider() {
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var svgEnabled = false;
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this.$get = ['$$sanitizeUri', function($$sanitizeUri) {
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if (svgEnabled) {
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angular.extend(validElements, svgElements);
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}
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return function(html) {
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var buf = [];
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htmlParser(html, htmlSanitizeWriter(buf, function(uri, isImage) {
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return !/^unsafe:/.test($$sanitizeUri(uri, isImage));
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}));
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return buf.join('');
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};
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}];
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/**
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* @ngdoc method
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* @name $sanitizeProvider#enableSvg
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* @kind function
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*
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* @description
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* Enables a subset of svg to be supported by the sanitizer.
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*
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* <div class="alert alert-warning">
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* <p>By enabling this setting without taking other precautions, you might expose your
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* application to click-hijacking attacks. In these attacks, sanitized svg elements could be positioned
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* outside of the containing element and be rendered over other elements on the page (e.g. a login
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* link). Such behavior can then result in phishing incidents.</p>
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*
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* <p>To protect against these, explicitly setup `overflow: hidden` css rule for all potential svg
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* tags within the sanitized content:</p>
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*
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* <br>
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*
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* <pre><code>
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* .rootOfTheIncludedContent svg {
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* overflow: hidden !important;
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* }
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* </code></pre>
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* </div>
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*
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* @param {boolean=} flag Enable or disable SVG support in the sanitizer.
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* @returns {boolean|ng.$sanitizeProvider} Returns the currently configured value if called
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* without an argument or self for chaining otherwise.
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*/
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this.enableSvg = function(enableSvg) {
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if (angular.isDefined(enableSvg)) {
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svgEnabled = enableSvg;
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return this;
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} else {
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return svgEnabled;
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}
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};
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}
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function sanitizeText(chars) {
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var buf = [];
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var writer = htmlSanitizeWriter(buf, angular.noop);
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writer.chars(chars);
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return buf.join('');
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}
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// Regular Expressions for parsing tags and attributes
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var SURROGATE_PAIR_REGEXP = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g,
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// Match everything outside of normal chars and " (quote character)
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NON_ALPHANUMERIC_REGEXP = /([^\#-~ |!])/g;
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// Good source of info about elements and attributes
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// http://dev.w3.org/html5/spec/Overview.html#semantics
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// http://simon.html5.org/html-elements
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// Safe Void Elements - HTML5
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// http://dev.w3.org/html5/spec/Overview.html#void-elements
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var voidElements = toMap("area,br,col,hr,img,wbr");
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// Elements that you can, intentionally, leave open (and which close themselves)
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// http://dev.w3.org/html5/spec/Overview.html#optional-tags
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var optionalEndTagBlockElements = toMap("colgroup,dd,dt,li,p,tbody,td,tfoot,th,thead,tr"),
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optionalEndTagInlineElements = toMap("rp,rt"),
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optionalEndTagElements = angular.extend({},
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optionalEndTagInlineElements,
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optionalEndTagBlockElements);
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// Safe Block Elements - HTML5
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var blockElements = angular.extend({}, optionalEndTagBlockElements, toMap("address,article," +
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"aside,blockquote,caption,center,del,dir,div,dl,figure,figcaption,footer,h1,h2,h3,h4,h5," +
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"h6,header,hgroup,hr,ins,map,menu,nav,ol,pre,section,table,ul"));
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// Inline Elements - HTML5
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var inlineElements = angular.extend({}, optionalEndTagInlineElements, toMap("a,abbr,acronym,b," +
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"bdi,bdo,big,br,cite,code,del,dfn,em,font,i,img,ins,kbd,label,map,mark,q,ruby,rp,rt,s," +
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"samp,small,span,strike,strong,sub,sup,time,tt,u,var"));
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// SVG Elements
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// https://wiki.whatwg.org/wiki/Sanitization_rules#svg_Elements
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// Note: the elements animate,animateColor,animateMotion,animateTransform,set are intentionally omitted.
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// They can potentially allow for arbitrary javascript to be executed. See #11290
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var svgElements = toMap("circle,defs,desc,ellipse,font-face,font-face-name,font-face-src,g,glyph," +
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"hkern,image,linearGradient,line,marker,metadata,missing-glyph,mpath,path,polygon,polyline," +
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"radialGradient,rect,stop,svg,switch,text,title,tspan");
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// Blocked Elements (will be stripped)
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var blockedElements = toMap("script,style");
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var validElements = angular.extend({},
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voidElements,
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blockElements,
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inlineElements,
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optionalEndTagElements);
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//Attributes that have href and hence need to be sanitized
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var uriAttrs = toMap("background,cite,href,longdesc,src,xlink:href");
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var htmlAttrs = toMap('abbr,align,alt,axis,bgcolor,border,cellpadding,cellspacing,class,clear,' +
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'color,cols,colspan,compact,coords,dir,face,headers,height,hreflang,hspace,' +
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'ismap,lang,language,nohref,nowrap,rel,rev,rows,rowspan,rules,' +
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'scope,scrolling,shape,size,span,start,summary,tabindex,target,title,type,' +
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'valign,value,vspace,width');
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// SVG attributes (without "id" and "name" attributes)
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// https://wiki.whatwg.org/wiki/Sanitization_rules#svg_Attributes
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var svgAttrs = toMap('accent-height,accumulate,additive,alphabetic,arabic-form,ascent,' +
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'baseProfile,bbox,begin,by,calcMode,cap-height,class,color,color-rendering,content,' +
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'cx,cy,d,dx,dy,descent,display,dur,end,fill,fill-rule,font-family,font-size,font-stretch,' +
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'font-style,font-variant,font-weight,from,fx,fy,g1,g2,glyph-name,gradientUnits,hanging,' +
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'height,horiz-adv-x,horiz-origin-x,ideographic,k,keyPoints,keySplines,keyTimes,lang,' +
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'marker-end,marker-mid,marker-start,markerHeight,markerUnits,markerWidth,mathematical,' +
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'max,min,offset,opacity,orient,origin,overline-position,overline-thickness,panose-1,' +
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'path,pathLength,points,preserveAspectRatio,r,refX,refY,repeatCount,repeatDur,' +
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'requiredExtensions,requiredFeatures,restart,rotate,rx,ry,slope,stemh,stemv,stop-color,' +
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'stop-opacity,strikethrough-position,strikethrough-thickness,stroke,stroke-dasharray,' +
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'stroke-dashoffset,stroke-linecap,stroke-linejoin,stroke-miterlimit,stroke-opacity,' +
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'stroke-width,systemLanguage,target,text-anchor,to,transform,type,u1,u2,underline-position,' +
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'underline-thickness,unicode,unicode-range,units-per-em,values,version,viewBox,visibility,' +
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'width,widths,x,x-height,x1,x2,xlink:actuate,xlink:arcrole,xlink:role,xlink:show,xlink:title,' +
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'xlink:type,xml:base,xml:lang,xml:space,xmlns,xmlns:xlink,y,y1,y2,zoomAndPan', true);
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var validAttrs = angular.extend({},
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uriAttrs,
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svgAttrs,
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htmlAttrs);
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function toMap(str, lowercaseKeys) {
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var obj = {}, items = str.split(','), i;
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for (i = 0; i < items.length; i++) {
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obj[lowercaseKeys ? angular.lowercase(items[i]) : items[i]] = true;
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}
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return obj;
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}
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var inertBodyElement;
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(function(window) {
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var doc;
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if (window.document && window.document.implementation) {
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doc = window.document.implementation.createHTMLDocument("inert");
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} else {
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throw $sanitizeMinErr('noinert', "Can't create an inert html document");
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}
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var docElement = doc.documentElement || doc.getDocumentElement();
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var bodyElements = docElement.getElementsByTagName('body');
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// usually there should be only one body element in the document, but IE doesn't have any, so we need to create one
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if (bodyElements.length === 1) {
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inertBodyElement = bodyElements[0];
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} else {
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var html = doc.createElement('html');
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inertBodyElement = doc.createElement('body');
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html.appendChild(inertBodyElement);
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doc.appendChild(html);
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}
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})(window);
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/**
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* @example
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* htmlParser(htmlString, {
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* start: function(tag, attrs) {},
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* end: function(tag) {},
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* chars: function(text) {},
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* comment: function(text) {}
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* });
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*
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* @param {string} html string
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* @param {object} handler
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*/
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function htmlParser(html, handler) {
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if (html === null || html === undefined) {
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html = '';
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} else if (typeof html !== 'string') {
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html = '' + html;
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}
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inertBodyElement.innerHTML = html;
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//mXSS protection
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var mXSSAttempts = 5;
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do {
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if (mXSSAttempts === 0) {
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throw $sanitizeMinErr('uinput', "Failed to sanitize html because the input is unstable");
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}
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mXSSAttempts--;
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// strip custom-namespaced attributes on IE<=11
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if (window.document.documentMode) {
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stripCustomNsAttrs(inertBodyElement);
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}
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html = inertBodyElement.innerHTML; //trigger mXSS
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inertBodyElement.innerHTML = html;
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} while (html !== inertBodyElement.innerHTML);
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var node = inertBodyElement.firstChild;
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while (node) {
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switch (node.nodeType) {
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case 1: // ELEMENT_NODE
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handler.start(node.nodeName.toLowerCase(), attrToMap(node.attributes));
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break;
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case 3: // TEXT NODE
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handler.chars(node.textContent);
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break;
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}
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var nextNode;
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if (!(nextNode = node.firstChild)) {
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if (node.nodeType == 1) {
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handler.end(node.nodeName.toLowerCase());
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}
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nextNode = node.nextSibling;
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if (!nextNode) {
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while (nextNode == null) {
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node = node.parentNode;
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if (node === inertBodyElement) break;
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nextNode = node.nextSibling;
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if (node.nodeType == 1) {
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handler.end(node.nodeName.toLowerCase());
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}
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}
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}
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}
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node = nextNode;
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}
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while (node = inertBodyElement.firstChild) {
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inertBodyElement.removeChild(node);
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}
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}
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function attrToMap(attrs) {
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var map = {};
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for (var i = 0, ii = attrs.length; i < ii; i++) {
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var attr = attrs[i];
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map[attr.name] = attr.value;
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}
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return map;
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}
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/**
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* Escapes all potentially dangerous characters, so that the
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* resulting string can be safely inserted into attribute or
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* element text.
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* @param value
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* @returns {string} escaped text
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*/
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function encodeEntities(value) {
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return value.
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replace(/&/g, '&').
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replace(SURROGATE_PAIR_REGEXP, function(value) {
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var hi = value.charCodeAt(0);
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var low = value.charCodeAt(1);
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return '&#' + (((hi - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000) + ';';
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}).
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replace(NON_ALPHANUMERIC_REGEXP, function(value) {
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return '&#' + value.charCodeAt(0) + ';';
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}).
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replace(/</g, '<').
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replace(/>/g, '>');
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}
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/**
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* create an HTML/XML writer which writes to buffer
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* @param {Array} buf use buf.join('') to get out sanitized html string
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* @returns {object} in the form of {
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* start: function(tag, attrs) {},
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* end: function(tag) {},
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* chars: function(text) {},
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* comment: function(text) {}
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* }
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*/
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function htmlSanitizeWriter(buf, uriValidator) {
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var ignoreCurrentElement = false;
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var out = angular.bind(buf, buf.push);
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return {
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start: function(tag, attrs) {
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tag = angular.lowercase(tag);
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if (!ignoreCurrentElement && blockedElements[tag]) {
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ignoreCurrentElement = tag;
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}
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if (!ignoreCurrentElement && validElements[tag] === true) {
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out('<');
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out(tag);
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angular.forEach(attrs, function(value, key) {
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var lkey=angular.lowercase(key);
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var isImage = (tag === 'img' && lkey === 'src') || (lkey === 'background');
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if (validAttrs[lkey] === true &&
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(uriAttrs[lkey] !== true || uriValidator(value, isImage))) {
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out(' ');
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out(key);
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out('="');
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out(encodeEntities(value));
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out('"');
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}
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});
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out('>');
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}
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},
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end: function(tag) {
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tag = angular.lowercase(tag);
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if (!ignoreCurrentElement && validElements[tag] === true && voidElements[tag] !== true) {
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out('</');
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out(tag);
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out('>');
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}
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if (tag == ignoreCurrentElement) {
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ignoreCurrentElement = false;
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}
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},
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chars: function(chars) {
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if (!ignoreCurrentElement) {
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out(encodeEntities(chars));
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}
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}
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};
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}
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/**
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* When IE9-11 comes across an unknown namespaced attribute e.g. 'xlink:foo' it adds 'xmlns:ns1' attribute to declare
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* ns1 namespace and prefixes the attribute with 'ns1' (e.g. 'ns1:xlink:foo'). This is undesirable since we don't want
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* to allow any of these custom attributes. This method strips them all.
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*
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* @param node Root element to process
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*/
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function stripCustomNsAttrs(node) {
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if (node.nodeType === window.Node.ELEMENT_NODE) {
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var attrs = node.attributes;
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for (var i = 0, l = attrs.length; i < l; i++) {
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var attrNode = attrs[i];
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var attrName = attrNode.name.toLowerCase();
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if (attrName === 'xmlns:ns1' || attrName.lastIndexOf('ns1:', 0) === 0) {
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node.removeAttributeNode(attrNode);
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i--;
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l--;
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}
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}
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}
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var nextNode = node.firstChild;
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if (nextNode) {
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stripCustomNsAttrs(nextNode);
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}
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nextNode = node.nextSibling;
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if (nextNode) {
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stripCustomNsAttrs(nextNode);
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}
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}
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// define ngSanitize module and register $sanitize service
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angular.module('ngSanitize', []).provider('$sanitize', $SanitizeProvider);
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/* global sanitizeText: false */
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/**
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* @ngdoc filter
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* @name linky
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* @kind function
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*
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* @description
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* Finds links in text input and turns them into html links. Supports `http/https/ftp/mailto` and
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* plain email address links.
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*
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* Requires the {@link ngSanitize `ngSanitize`} module to be installed.
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*
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* @param {string} text Input text.
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* @param {string} target Window (`_blank|_self|_parent|_top`) or named frame to open links in.
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* @param {object|function(url)} [attributes] Add custom attributes to the link element.
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*
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* Can be one of:
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*
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* - `object`: A map of attributes
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* - `function`: Takes the url as a parameter and returns a map of attributes
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*
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* If the map of attributes contains a value for `target`, it overrides the value of
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* the target parameter.
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*
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*
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* @returns {string} Html-linkified and {@link $sanitize sanitized} text.
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*
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* @usage
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<span ng-bind-html="linky_expression | linky"></span>
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*
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* @example
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<example module="linkyExample" deps="angular-sanitize.js">
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<file name="index.html">
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<div ng-controller="ExampleController">
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Snippet: <textarea ng-model="snippet" cols="60" rows="3"></textarea>
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<table>
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<tr>
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<th>Filter</th>
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<th>Source</th>
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<th>Rendered</th>
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</tr>
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<tr id="linky-filter">
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<td>linky filter</td>
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<td>
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<pre><div ng-bind-html="snippet | linky"><br></div></pre>
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</td>
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<td>
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<div ng-bind-html="snippet | linky"></div>
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</td>
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</tr>
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<tr id="linky-target">
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<td>linky target</td>
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<td>
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<pre><div ng-bind-html="snippetWithSingleURL | linky:'_blank'"><br></div></pre>
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</td>
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<td>
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<div ng-bind-html="snippetWithSingleURL | linky:'_blank'"></div>
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</td>
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</tr>
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<tr id="linky-custom-attributes">
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<td>linky custom attributes</td>
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<td>
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<pre><div ng-bind-html="snippetWithSingleURL | linky:'_self':{rel: 'nofollow'}"><br></div></pre>
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</td>
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<td>
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<div ng-bind-html="snippetWithSingleURL | linky:'_self':{rel: 'nofollow'}"></div>
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</td>
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</tr>
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<tr id="escaped-html">
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<td>no filter</td>
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<td><pre><div ng-bind="snippet"><br></div></pre></td>
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<td><div ng-bind="snippet"></div></td>
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</tr>
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</table>
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</file>
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<file name="script.js">
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angular.module('linkyExample', ['ngSanitize'])
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.controller('ExampleController', ['$scope', function($scope) {
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$scope.snippet =
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'Pretty text with some links:\n'+
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'http://angularjs.org/,\n'+
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'mailto:us@somewhere.org,\n'+
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'another@somewhere.org,\n'+
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'and one more: ftp://127.0.0.1/.';
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$scope.snippetWithSingleURL = 'http://angularjs.org/';
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}]);
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</file>
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<file name="protractor.js" type="protractor">
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it('should linkify the snippet with urls', function() {
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expect(element(by.id('linky-filter')).element(by.binding('snippet | linky')).getText()).
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toBe('Pretty text with some links: http://angularjs.org/, us@somewhere.org, ' +
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'another@somewhere.org, and one more: ftp://127.0.0.1/.');
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expect(element.all(by.css('#linky-filter a')).count()).toEqual(4);
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});
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it('should not linkify snippet without the linky filter', function() {
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expect(element(by.id('escaped-html')).element(by.binding('snippet')).getText()).
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toBe('Pretty text with some links: http://angularjs.org/, mailto:us@somewhere.org, ' +
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'another@somewhere.org, and one more: ftp://127.0.0.1/.');
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expect(element.all(by.css('#escaped-html a')).count()).toEqual(0);
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});
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it('should update', function() {
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element(by.model('snippet')).clear();
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element(by.model('snippet')).sendKeys('new http://link.');
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expect(element(by.id('linky-filter')).element(by.binding('snippet | linky')).getText()).
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toBe('new http://link.');
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expect(element.all(by.css('#linky-filter a')).count()).toEqual(1);
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expect(element(by.id('escaped-html')).element(by.binding('snippet')).getText())
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.toBe('new http://link.');
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});
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it('should work with the target property', function() {
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expect(element(by.id('linky-target')).
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element(by.binding("snippetWithSingleURL | linky:'_blank'")).getText()).
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toBe('http://angularjs.org/');
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expect(element(by.css('#linky-target a')).getAttribute('target')).toEqual('_blank');
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});
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it('should optionally add custom attributes', function() {
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expect(element(by.id('linky-custom-attributes')).
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element(by.binding("snippetWithSingleURL | linky:'_self':{rel: 'nofollow'}")).getText()).
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toBe('http://angularjs.org/');
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expect(element(by.css('#linky-custom-attributes a')).getAttribute('rel')).toEqual('nofollow');
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});
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</file>
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</example>
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*/
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angular.module('ngSanitize').filter('linky', ['$sanitize', function($sanitize) {
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var LINKY_URL_REGEXP =
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/((ftp|https?):\/\/|(www\.)|(mailto:)?[A-Za-z0-9._%+-]+@)\S*[^\s.;,(){}<>"\u201d\u2019]/i,
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MAILTO_REGEXP = /^mailto:/i;
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var linkyMinErr = angular.$$minErr('linky');
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var isString = angular.isString;
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return function(text, target, attributes) {
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if (text == null || text === '') return text;
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if (!isString(text)) throw linkyMinErr('notstring', 'Expected string but received: {0}', text);
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var attributesFn =
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angular.isFunction(attributes) ? attributes :
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angular.isObject(attributes) ? function getAttributesObject() {return attributes;} :
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function getEmptyAttributesObject() {return {};};
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var match;
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var raw = text;
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var html = [];
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var url;
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var i;
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while ((match = raw.match(LINKY_URL_REGEXP))) {
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// We can not end in these as they are sometimes found at the end of the sentence
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url = match[0];
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// if we did not match ftp/http/www/mailto then assume mailto
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if (!match[2] && !match[4]) {
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url = (match[3] ? 'http://' : 'mailto:') + url;
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}
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i = match.index;
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addText(raw.substr(0, i));
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addLink(url, match[0].replace(MAILTO_REGEXP, ''));
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raw = raw.substring(i + match[0].length);
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}
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addText(raw);
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return $sanitize(html.join(''));
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function addText(text) {
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if (!text) {
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return;
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}
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html.push(sanitizeText(text));
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}
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function addLink(url, text) {
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var key, linkAttributes = attributesFn(url);
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html.push('<a ');
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for (key in linkAttributes) {
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html.push(key + '="' + linkAttributes[key] + '" ');
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}
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if (angular.isDefined(target) && !('target' in linkAttributes)) {
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html.push('target="',
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target,
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'" ');
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}
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html.push('href="',
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url.replace(/"/g, '"'),
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'">');
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addText(text);
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html.push('</a>');
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}
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};
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}]);
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|
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})(window, window.angular);
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