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share/status/app/lib/angular/angular-sanitize.js view on Meta::CPAN
/**
* @license AngularJS v1.2.6
* (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}
*
* <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 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
<doc:example module="ngSanitize">
<doc:source>
<script>
function Ctrl($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="Ctrl">
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>
</doc:source>
<doc:scenario>
it('should sanitize the html snippet by default', function() {
expect(using('#bind-html-with-sanitize').element('div').html()).
toBe('<p>an html\n<em>click here</em>\nsnippet</p>');
});
it('should inline raw snippet if bound to a trusted value', function() {
expect(using('#bind-html-with-trust').element("div").html()).
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(using('#bind-default').element('div').html()).
toBe("<p style=\"color:blue\">an html\n" +
"<em onmouseover=\"this.textContent='PWN3D!'\">click here</em>\n" +
"snippet</p>");
});
it('should update', function() {
input('snippet').enter('new <b onclick="alert(1)">text</b>');
expect(using('#bind-html-with-sanitize').element('div').html()).toBe('new <b>text</b>');
expect(using('#bind-html-with-trust').element('div').html()).toBe(
'new <b onclick="alert(1)">text</b>');
expect(using('#bind-default').element('div').html()).toBe(
"new <b onclick=\"alert(1)\">text</b>");
});
</doc:scenario>
</doc: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 =
/^<\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 = /^</,
BEGING_END_TAGE_REGEXP = /^<\s*\//,
COMMENT_REGEXP = /<!--(.*?)-->/g,
DOCTYPE_REGEXP = /<!DOCTYPE([^>]*?)>/i,
CDATA_REGEXP = /<!\[CDATA\[(.*?)]]>/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)
share/status/app/lib/angular/angular-sanitize.js view on Meta::CPAN
|| '';
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 escaped text
*/
function encodeEntities(value) {
return value.
replace(/&/g, '&').
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){
share/status/app/lib/angular/angular-sanitize.js view on Meta::CPAN
/* 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
<span ng-bind-html="linky_expression | linky"></span>
*
* @example
<doc:example module="ngSanitize">
<doc:source>
<script>
function Ctrl($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="Ctrl">
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>
</doc:source>
<doc:scenario>
it('should linkify the snippet with urls', function() {
expect(using('#linky-filter').binding('snippet | linky')).
toBe('Pretty text with some links: ' +
'<a href="http://angularjs.org/">http://angularjs.org/</a>, ' +
'<a href="mailto:us@somewhere.org">us@somewhere.org</a>, ' +
'<a href="mailto:another@somewhere.org">another@somewhere.org</a>, ' +
'and one more: <a href="ftp://127.0.0.1/">ftp://127.0.0.1/</a>.');
});
it ('should not linkify snippet without the linky filter', function() {
expect(using('#escaped-html').binding('snippet')).
toBe("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/.");
});
it('should update', function() {
input('snippet').enter('new http://link.');
expect(using('#linky-filter').binding('snippet | linky')).
toBe('new <a href="http://link">http://link</a>.');
expect(using('#escaped-html').binding('snippet')).toBe('new http://link.');
});
it('should work with the target property', function() {
expect(using('#linky-target').binding("snippetWithTarget | linky:'_blank'")).
toBe('<a target="_blank" href="http://angularjs.org/">http://angularjs.org/</a>');
});
</doc:scenario>
</doc: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);
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