1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
class Twig_Tests_Extension_SandboxTest extends PHPUnit_Framework_TestCase
{
protected static $params, $templates;
public function setUp()
{
self::$params = array(
'name' => 'Fabien',
'obj' => new FooObject(),
'arr' => array('obj' => new FooObject()),
);
self::$templates = array(
'1_basic1' => '{{ obj.foo }}',
'1_basic2' => '{{ name|upper }}',
'1_basic3' => '{% if name %}foo{% endif %}',
'1_basic4' => '{{ obj.bar }}',
'1_basic5' => '{{ obj }}',
'1_basic6' => '{{ arr.obj }}',
'1_basic7' => '{{ cycle(["foo","bar"], 1) }}',
'1_basic8' => '{{ obj.getfoobar }}{{ obj.getFooBar }}',
'1_basic' => '{% if obj.foo %}{{ obj.foo|upper }}{% endif %}',
'1_layout' => '{% block content %}{% endblock %}',
'1_child' => '{% extends "1_layout" %}{% block content %}{{ "a"|json_encode }}{% endblock %}',
);
}
/**
* @expectedException Twig_Sandbox_SecurityError
* @expectedExceptionMessage Filter "json_encode" is not allowed in "1_child".
*/
public function testSandboxWithInheritance()
{
$twig = $this->getEnvironment(true, array(), self::$templates, array('block'));
$twig->loadTemplate('1_child')->render(array());
}
public function testSandboxGloballySet()
{
$twig = $this->getEnvironment(false, array(), self::$templates);
$this->assertEquals('FOO', $twig->loadTemplate('1_basic')->render(self::$params), 'Sandbox does nothing if it is disabled globally');
$twig = $this->getEnvironment(true, array(), self::$templates);
try {
$twig->loadTemplate('1_basic1')->render(self::$params);
$this->fail('Sandbox throws a SecurityError exception if an unallowed method is called');
} catch (Twig_Sandbox_SecurityError $e) {
}
$twig = $this->getEnvironment(true, array(), self::$templates);
try {
$twig->loadTemplate('1_basic2')->render(self::$params);
$this->fail('Sandbox throws a SecurityError exception if an unallowed filter is called');
} catch (Twig_Sandbox_SecurityError $e) {
}
$twig = $this->getEnvironment(true, array(), self::$templates);
try {
$twig->loadTemplate('1_basic3')->render(self::$params);
$this->fail('Sandbox throws a SecurityError exception if an unallowed tag is used in the template');
} catch (Twig_Sandbox_SecurityError $e) {
}
$twig = $this->getEnvironment(true, array(), self::$templates);
try {
$twig->loadTemplate('1_basic4')->render(self::$params);
$this->fail('Sandbox throws a SecurityError exception if an unallowed property is called in the template');
} catch (Twig_Sandbox_SecurityError $e) {
}
$twig = $this->getEnvironment(true, array(), self::$templates);
try {
$twig->loadTemplate('1_basic5')->render(self::$params);
$this->fail('Sandbox throws a SecurityError exception if an unallowed method (__toString()) is called in the template');
} catch (Twig_Sandbox_SecurityError $e) {
}
$twig = $this->getEnvironment(true, array(), self::$templates);
try {
$twig->loadTemplate('1_basic6')->render(self::$params);
$this->fail('Sandbox throws a SecurityError exception if an unallowed method (__toString()) is called in the template');
} catch (Twig_Sandbox_SecurityError $e) {
}
$twig = $this->getEnvironment(true, array(), self::$templates);
try {
$twig->loadTemplate('1_basic7')->render(self::$params);
$this->fail('Sandbox throws a SecurityError exception if an unallowed function is called in the template');
} catch (Twig_Sandbox_SecurityError $e) {
}
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array('FooObject' => 'foo'));
FooObject::reset();
$this->assertEquals('foo', $twig->loadTemplate('1_basic1')->render(self::$params), 'Sandbox allow some methods');
$this->assertEquals(1, FooObject::$called['foo'], 'Sandbox only calls method once');
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array('FooObject' => '__toString'));
FooObject::reset();
$this->assertEquals('foo', $twig->loadTemplate('1_basic5')->render(self::$params), 'Sandbox allow some methods');
$this->assertEquals(1, FooObject::$called['__toString'], 'Sandbox only calls method once');
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array('upper'));
$this->assertEquals('FABIEN', $twig->loadTemplate('1_basic2')->render(self::$params), 'Sandbox allow some filters');
$twig = $this->getEnvironment(true, array(), self::$templates, array('if'));
$this->assertEquals('foo', $twig->loadTemplate('1_basic3')->render(self::$params), 'Sandbox allow some tags');
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array(), array('FooObject' => 'bar'));
$this->assertEquals('bar', $twig->loadTemplate('1_basic4')->render(self::$params), 'Sandbox allow some properties');
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array(), array(), array('cycle'));
$this->assertEquals('bar', $twig->loadTemplate('1_basic7')->render(self::$params), 'Sandbox allow some functions');
foreach (array('getfoobar', 'getFoobar', 'getFooBar') as $name) {
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array('FooObject' => $name));
FooObject::reset();
$this->assertEquals('foobarfoobar', $twig->loadTemplate('1_basic8')->render(self::$params), 'Sandbox allow methods in a case-insensitive way');
$this->assertEquals(2, FooObject::$called['getFooBar'], 'Sandbox only calls method once');
}
}
public function testSandboxLocallySetForAnInclude()
{
self::$templates = array(
'2_basic' => '{{ obj.foo }}{% include "2_included" %}{{ obj.foo }}',
'2_included' => '{% if obj.foo %}{{ obj.foo|upper }}{% endif %}',
);
$twig = $this->getEnvironment(false, array(), self::$templates);
$this->assertEquals('fooFOOfoo', $twig->loadTemplate('2_basic')->render(self::$params), 'Sandbox does nothing if disabled globally and sandboxed not used for the include');
self::$templates = array(
'3_basic' => '{{ obj.foo }}{% sandbox %}{% include "3_included" %}{% endsandbox %}{{ obj.foo }}',
'3_included' => '{% if obj.foo %}{{ obj.foo|upper }}{% endif %}',
);
$twig = $this->getEnvironment(true, array(), self::$templates);
try {
$twig->loadTemplate('3_basic')->render(self::$params);
$this->fail('Sandbox throws a SecurityError exception when the included file is sandboxed');
} catch (Twig_Sandbox_SecurityError $e) {
}
}
public function testMacrosInASandbox()
{
$twig = $this->getEnvironment(true, array('autoescape' => true), array('index' => <<<EOF
{%- import _self as macros %}
{%- macro test(text) %}<p>{{ text }}</p>{% endmacro %}
{{- macros.test('username') }}
EOF
), array('macro', 'import'), array('escape'));
$this->assertEquals('<p>username</p>', $twig->loadTemplate('index')->render(array()));
}
protected function getEnvironment($sandboxed, $options, $templates, $tags = array(), $filters = array(), $methods = array(), $properties = array(), $functions = array())
{
$loader = new Twig_Loader_Array($templates);
$twig = new Twig_Environment($loader, array_merge(array('debug' => true, 'cache' => false, 'autoescape' => false), $options));
$policy = new Twig_Sandbox_SecurityPolicy($tags, $filters, $methods, $properties, $functions);
$twig->addExtension(new Twig_Extension_Sandbox($policy, $sandboxed));
return $twig;
}
}
class FooObject
{
public static $called = array('__toString' => 0, 'foo' => 0, 'getFooBar' => 0);
public $bar = 'bar';
public static function reset()
{
self::$called = array('__toString' => 0, 'foo' => 0, 'getFooBar' => 0);
}
public function __toString()
{
++self::$called['__toString'];
return 'foo';
}
public function foo()
{
++self::$called['foo'];
return 'foo';
}
public function getFooBar()
{
++self::$called['getFooBar'];
return 'foobar';
}
}
|
