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sanitizeSpec.js
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'use strict';
describe('HTML', function() {
var expectHTML;
beforeEach(module('ngSanitize'));
beforeEach(function() {
expectHTML = function(html) {
var sanitize;
inject(function($sanitize) {
sanitize = $sanitize;
});
return expect(sanitize(html));
};
});
describe('htmlParser', function() {
/* global htmlParser */
if (angular.isUndefined(window.htmlParser)) return;
var handler, start, text, comment;
beforeEach(function() {
text = "";
handler = {
start: function(tag, attrs, unary) {
start = {
tag: tag,
attrs: attrs,
unary: unary
};
// Since different browsers handle newlines differently we trim
// so that it is easier to write tests.
angular.forEach(attrs, function(value, key) {
attrs[key] = value.replace(/^\s*/, '').replace(/\s*$/, '');
});
},
chars: function(text_) {
text += text_;
},
end:function(tag) {
expect(tag).toEqual(start.tag);
},
comment:function(comment_) {
comment = comment_;
}
};
});
it('should parse comments', function() {
htmlParser('<!--FOOBAR-->', handler);
expect(comment).toEqual('FOOBAR');
});
it('should throw an exception for invalid comments', function() {
var caught=false;
try {
htmlParser('<!-->', handler);
}
catch (ex) {
caught = true;
// expected an exception due to a bad parse
}
expect(caught).toBe(true);
});
it('double-dashes are not allowed in a comment', function() {
var caught=false;
try {
htmlParser('<!-- -- -->', handler);
}
catch (ex) {
caught = true;
// expected an exception due to a bad parse
}
expect(caught).toBe(true);
});
it('should parse basic format', function() {
htmlParser('<tag attr="value">text</tag>', handler);
expect(start).toEqual({tag:'tag', attrs:{attr:'value'}, unary:false});
expect(text).toEqual('text');
});
it('should not treat "<" followed by a non-/ or non-letter as a tag', function() {
expectHTML('<- text1 text2 <1 text1 text2 <{', handler).
toBe('<- text1 text2 <1 text1 text2 <{');
});
it('should throw badparse if text content contains "<" followed by "/" without matching ">"', function() {
expect(function() {
htmlParser('foo </ bar', handler);
}).toThrowMinErr('$sanitize', 'badparse', 'The sanitizer was unable to parse the following block of html: </ bar');
});
it('should throw badparse if text content contains "<" followed by an ASCII letter without matching ">"', function() {
expect(function() {
htmlParser('foo <a bar', handler);
}).toThrowMinErr('$sanitize', 'badparse', 'The sanitizer was unable to parse the following block of html: <a bar');
});
it('should accept tag delimiters such as "<" inside real tags', function() {
// Assert that the < is part of the text node content, and not part of a tag name.
htmlParser('<p> 10 < 100 </p>', handler);
expect(text).toEqual(' 10 < 100 ');
});
it('should parse newlines in tags', function() {
htmlParser('<tag\n attr="value"\n>text</\ntag\n>', handler);
expect(start).toEqual({tag:'tag', attrs:{attr:'value'}, unary:false});
expect(text).toEqual('text');
});
it('should parse newlines in attributes', function() {
htmlParser('<tag attr="\nvalue\n">text</tag>', handler);
expect(start).toEqual({tag:'tag', attrs:{attr:'value'}, unary:false});
expect(text).toEqual('text');
});
it('should parse namespace', function() {
htmlParser('<ns:t-a-g ns:a-t-t-r="\nvalue\n">text</ns:t-a-g>', handler);
expect(start).toEqual({tag:'ns:t-a-g', attrs:{'ns:a-t-t-r':'value'}, unary:false});
expect(text).toEqual('text');
});
it('should parse empty value attribute of node', function() {
htmlParser('<OPTION selected value="">abc</OPTION>', handler);
expect(start).toEqual({tag:'option', attrs:{selected:'', value:''}, unary:false});
expect(text).toEqual('abc');
});
});
// THESE TESTS ARE EXECUTED WITH COMPILED ANGULAR
it('should echo html', function() {
expectHTML('hello<b class="1\'23" align=\'""\'>world</b>.').
toEqual('hello<b class="1\'23" align="""">world</b>.');
});
it('should remove script', function() {
expectHTML('a<SCRIPT>evil< / scrIpt >c.').toEqual('ac.');
});
it('should remove script that has newline characters', function() {
expectHTML('a<SCRIPT\n>\n\revil\n\r< / scrIpt\n >c.').toEqual('ac.');
});
it('should remove DOCTYPE header', function() {
expectHTML('<!DOCTYPE html>').toEqual('');
expectHTML('<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"\n"http://www.w3.org/TR/html4/strict.dtd">').toEqual('');
expectHTML('a<!DOCTYPE html>c.').toEqual('ac.');
expectHTML('a<!DocTyPe html>c.').toEqual('ac.');
});
it('should escape non-start tags', function() {
expectHTML('a< SCRIPT >A< SCRIPT >evil< / scrIpt >B< / scrIpt >c.').
toBe('a< SCRIPT >A< SCRIPT >evil< / scrIpt >B< / scrIpt >c.');
});
it('should remove attrs', function() {
expectHTML('a<div style="abc">b</div>c').toEqual('a<div>b</div>c');
});
it('should remove style', function() {
expectHTML('a<STyle>evil</stYle>c.').toEqual('ac.');
});
it('should remove style that has newline characters', function() {
expectHTML('a<STyle \n>\n\revil\n\r</stYle\n>c.').toEqual('ac.');
});
it('should remove script and style', function() {
expectHTML('a<STyle>evil<script></script></stYle>c.').toEqual('ac.');
});
it('should remove double nested script', function() {
expectHTML('a<SCRIPT>ev<script>evil</sCript>il</scrIpt>c.').toEqual('ac.');
});
it('should remove unknown names', function() {
expectHTML('a<xxx><B>b</B></xxx>c').toEqual('a<b>b</b>c');
});
it('should remove unsafe value', function() {
expectHTML('<a href="javascript:alert()">').toEqual('<a></a>');
});
it('should handle self closed elements', function() {
expectHTML('a<hr/>c').toEqual('a<hr/>c');
});
it('should handle namespace', function() {
expectHTML('a<my:hr/><my:div>b</my:div>c').toEqual('abc');
});
it('should handle entities', function() {
var everything = '<div rel="!@#$%^&*()_+-={}[]:";\'<>?,./`~ ħ">' +
'!@#$%^&*()_+-={}[]:";\'<>?,./`~ ħ</div>';
expectHTML(everything).toEqual(everything);
});
it('should mangle improper html', function() {
// This text is encoded more than a real HTML parser would, but it should render the same.
expectHTML('< div rel="</div>" alt=abc dir=\'"\' >text< /div>').
toBe('< div rel="" alt=abc dir=\'"\' >text< /div>');
});
it('should mangle improper html2', function() {
// A proper HTML parser would clobber this more in most cases, but it looks reasonable.
expectHTML('< div rel="</div>" / >').
toBe('< div rel="" / >');
});
it('should ignore back slash as escape', function() {
expectHTML('<img alt="xxx\\" title="><script>....">').
toEqual('<img alt="xxx\\" title="><script>...."/>');
});
it('should ignore object attributes', function() {
expectHTML('<a constructor="hola">:)</a>').
toEqual('<a>:)</a>');
expectHTML('<constructor constructor="hola">:)</constructor>').
toEqual('');
});
it('should keep spaces as prefix/postfix', function() {
expectHTML(' a ').toEqual(' a ');
});
it('should allow multiline strings', function() {
expectHTML('\na\n').toEqual(' a ');
});
it('should accept tag delimiters such as "<" inside real tags (with nesting)', function() {
//this is an integrated version of the 'should accept tag delimiters such as "<" inside real tags' test
expectHTML('<p> 10 < <span>100</span> </p>')
.toEqual('<p> 10 < <span>100</span> </p>');
});
it('should accept non-string arguments', function() {
expectHTML(null).toBe('');
expectHTML(undefined).toBe('');
expectHTML(42).toBe('42');
expectHTML({}).toBe('[object Object]');
expectHTML([1, 2, 3]).toBe('1,2,3');
expectHTML(true).toBe('true');
expectHTML(false).toBe('false');
});
it('should accept SVG tags', function() {
expectHTML('<svg width="400px" height="150px" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red"/></svg>')
.toEqual('<svg width="400px" height="150px" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red"/></svg>');
});
it('should not ignore white-listed svg camelCased attributes', function() {
expectHTML('<svg preserveAspectRatio="true"></svg>')
.toEqual('<svg preserveAspectRatio="true"></svg>');
});
it('should sanitize SVG xlink:href attribute values', function() {
expectHTML('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><a xlink:href="javascript:alert()"></a></svg>')
.toEqual('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><a></a></svg>');
expectHTML('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><a xlink:href="https://example.com"></a></svg>')
.toEqual('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><a xlink:href="https://example.com"></a></svg>');
});
it('should sanitize unknown namespaced SVG attributes', function() {
expectHTML('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><a xlink:foo="javascript:alert()"></a></svg>')
.toEqual('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><a></a></svg>');
expectHTML('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><a xlink:bar="https://example.com"></a></svg>')
.toEqual('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><a></a></svg>');
});
describe('htmlSanitizerWriter', function() {
/* global htmlSanitizeWriter: false */
if (angular.isUndefined(window.htmlSanitizeWriter)) return;
var writer, html, uriValidator;
beforeEach(function() {
html = '';
uriValidator = jasmine.createSpy('uriValidator');
writer = htmlSanitizeWriter({push:function(text) {html+=text;}}, uriValidator);
});
it('should write basic HTML', function() {
writer.chars('before');
writer.start('div', {rel:'123'}, false);
writer.chars('in');
writer.end('div');
writer.chars('after');
expect(html).toEqual('before<div rel="123">in</div>after');
});
it('should escape text nodes', function() {
writer.chars('a<div>&</div>c');
expect(html).toEqual('a<div>&</div>c');
});
it('should escape IE script', function() {
writer.chars('&<>{}');
expect(html).toEqual('&<>{}');
});
it('should escape attributes', function() {
writer.start('div', {rel:'!@#$%^&*()_+-={}[]:";\'<>?,./`~ \n\0\r\u0127'});
expect(html).toEqual('<div rel="!@#$%^&*()_+-={}[]:";\'<>?,./`~ � ħ">');
});
it('should ignore missformed elements', function() {
writer.start('d>i&v', {});
expect(html).toEqual('');
});
it('should ignore unknown attributes', function() {
writer.start('div', {unknown:""});
expect(html).toEqual('<div>');
});
it('should handle surrogate pair', function() {
writer.chars(String.fromCharCode(55357, 56374));
expect(html).toEqual('🐶');
});
describe('explicitly disallow', function() {
it('should not allow attributes', function() {
writer.start('div', {id:'a', name:'a', style:'a'});
expect(html).toEqual('<div>');
});
it('should not allow tags', function() {
function tag(name) {
writer.start(name, {});
writer.end(name);
}
tag('frameset');
tag('frame');
tag('form');
tag('param');
tag('object');
tag('embed');
tag('textarea');
tag('input');
tag('button');
tag('option');
tag('select');
tag('script');
tag('style');
tag('link');
tag('base');
tag('basefont');
expect(html).toEqual('');
});
});
describe('uri validation', function() {
it('should call the uri validator', function() {
writer.start('a', {href:'someUrl'}, false);
expect(uriValidator).toHaveBeenCalledWith('someUrl', false);
uriValidator.reset();
writer.start('img', {src:'someImgUrl'}, false);
expect(uriValidator).toHaveBeenCalledWith('someImgUrl', true);
uriValidator.reset();
writer.start('someTag', {src:'someNonUrl'}, false);
expect(uriValidator).not.toHaveBeenCalled();
});
it('should drop non valid uri attributes', function() {
uriValidator.andReturn(false);
writer.start('a', {href:'someUrl'}, false);
expect(html).toEqual('<a>');
html = '';
uriValidator.andReturn(true);
writer.start('a', {href:'someUrl'}, false);
expect(html).toEqual('<a href="someUrl">');
});
});
});
describe('uri checking', function() {
beforeEach(function() {
this.addMatchers({
toBeValidUrl: function() {
var sanitize;
inject(function($sanitize) {
sanitize = $sanitize;
});
var input = '<a href="' + this.actual + '"></a>';
return sanitize(input) === input;
},
toBeValidImageSrc: function() {
var sanitize;
inject(function($sanitize) {
sanitize = $sanitize;
});
var input = '<img src="' + this.actual + '"/>';
return sanitize(input) === input;
}
});
});
it('should use $$sanitizeUri for links', function() {
var $$sanitizeUri = jasmine.createSpy('$$sanitizeUri');
module(function($provide) {
$provide.value('$$sanitizeUri', $$sanitizeUri);
});
inject(function() {
$$sanitizeUri.andReturn('someUri');
expectHTML('<a href="someUri"></a>').toEqual('<a href="someUri"></a>');
expect($$sanitizeUri).toHaveBeenCalledWith('someUri', false);
$$sanitizeUri.andReturn('unsafe:someUri');
expectHTML('<a href="someUri"></a>').toEqual('<a></a>');
});
});
it('should use $$sanitizeUri for links', function() {
var $$sanitizeUri = jasmine.createSpy('$$sanitizeUri');
module(function($provide) {
$provide.value('$$sanitizeUri', $$sanitizeUri);
});
inject(function() {
$$sanitizeUri.andReturn('someUri');
expectHTML('<img src="someUri"/>').toEqual('<img src="someUri"/>');
expect($$sanitizeUri).toHaveBeenCalledWith('someUri', true);
$$sanitizeUri.andReturn('unsafe:someUri');
expectHTML('<img src="someUri"/>').toEqual('<img/>');
});
});
it('should be URI', function() {
expect('').toBeValidUrl();
expect('http://abc').toBeValidUrl();
expect('HTTP://abc').toBeValidUrl();
expect('https://abc').toBeValidUrl();
expect('HTTPS://abc').toBeValidUrl();
expect('ftp://abc').toBeValidUrl();
expect('FTP://abc').toBeValidUrl();
expect('mailto:[email protected]').toBeValidUrl();
expect('MAILTO:[email protected]').toBeValidUrl();
expect('tel:123-123-1234').toBeValidUrl();
expect('TEL:123-123-1234').toBeValidUrl();
expect('#anchor').toBeValidUrl();
expect('/page1.md').toBeValidUrl();
});
it('should not be URI', function() {
/* jshint scripturl: true */
expect('javascript:alert').not.toBeValidUrl();
});
describe('javascript URLs', function() {
it('should ignore javascript:', function() {
/* jshint scripturl: true */
expect('JavaScript:abc').not.toBeValidUrl();
expect(' \n Java\n Script:abc').not.toBeValidUrl();
expect('http://JavaScript/my.js').toBeValidUrl();
});
it('should ignore dec encoded javascript:', function() {
expect('javascript:').not.toBeValidUrl();
expect('javascript:').not.toBeValidUrl();
expect('j avascript:').not.toBeValidUrl();
});
it('should ignore decimal with leading 0 encodede javascript:', function() {
expect('javascript:').not.toBeValidUrl();
expect('j avascript:').not.toBeValidUrl();
expect('j avascript:').not.toBeValidUrl();
});
it('should ignore hex encoded javascript:', function() {
expect('javascript:').not.toBeValidUrl();
expect('javascript:').not.toBeValidUrl();
expect('j avascript:').not.toBeValidUrl();
});
it('should ignore hex encoded whitespace javascript:', function() {
expect('jav	ascript:alert();').not.toBeValidUrl();
expect('jav
ascript:alert();').not.toBeValidUrl();
expect('jav
 ascript:alert();').not.toBeValidUrl();
expect('jav\u0000ascript:alert();').not.toBeValidUrl();
expect('java\u0000\u0000script:alert();').not.toBeValidUrl();
expect('  java\u0000\u0000script:alert();').not.toBeValidUrl();
});
});
});
describe('sanitizeText', function() {
/* global sanitizeText: false */
it('should escape text', function() {
expect(sanitizeText('a<div>&</div>c')).toEqual('a<div>&</div>c');
});
});
});
describe('decodeEntities', function() {
var handler, text;
beforeEach(function() {
text = '';
handler = {
start: function() {},
chars: function(text_) {
text = text_;
},
end: function() {},
comment: function() {}
};
module('ngSanitize');
});
it('should unescape text', function() {
htmlParser('a<div>&</div>c', handler);
expect(text).toEqual('a<div>&</div>c');
});
it('should preserve whitespace', function() {
htmlParser(' a&b ', handler);
expect(text).toEqual(' a&b ');
});
});