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/**
* @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 ([email protected])
* 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/, [email protected], ' +
'[email protected], 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:[email protected], ' +
'[email protected], 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);
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