1
|
<?php
|
2
|
|
3
|
/*
|
4
|
* This file is part of Twig.
|
5
|
*
|
6
|
* (c) 2009 Fabien Potencier
|
7
|
*
|
8
|
* For the full copyright and license information, please view the LICENSE
|
9
|
* file that was distributed with this source code.
|
10
|
*/
|
11
|
class Twig_Extension_Sandbox extends Twig_Extension
|
12
|
{
|
13
|
protected $sandboxedGlobally;
|
14
|
protected $sandboxed;
|
15
|
protected $policy;
|
16
|
|
17
|
public function __construct(Twig_Sandbox_SecurityPolicyInterface $policy, $sandboxed = false)
|
18
|
{
|
19
|
$this->policy = $policy;
|
20
|
$this->sandboxedGlobally = $sandboxed;
|
21
|
}
|
22
|
|
23
|
public function getTokenParsers()
|
24
|
{
|
25
|
return array(new Twig_TokenParser_Sandbox());
|
26
|
}
|
27
|
|
28
|
public function getNodeVisitors()
|
29
|
{
|
30
|
return array(new Twig_NodeVisitor_Sandbox());
|
31
|
}
|
32
|
|
33
|
public function enableSandbox()
|
34
|
{
|
35
|
$this->sandboxed = true;
|
36
|
}
|
37
|
|
38
|
public function disableSandbox()
|
39
|
{
|
40
|
$this->sandboxed = false;
|
41
|
}
|
42
|
|
43
|
public function isSandboxed()
|
44
|
{
|
45
|
return $this->sandboxedGlobally || $this->sandboxed;
|
46
|
}
|
47
|
|
48
|
public function isSandboxedGlobally()
|
49
|
{
|
50
|
return $this->sandboxedGlobally;
|
51
|
}
|
52
|
|
53
|
public function setSecurityPolicy(Twig_Sandbox_SecurityPolicyInterface $policy)
|
54
|
{
|
55
|
$this->policy = $policy;
|
56
|
}
|
57
|
|
58
|
public function getSecurityPolicy()
|
59
|
{
|
60
|
return $this->policy;
|
61
|
}
|
62
|
|
63
|
public function checkSecurity($tags, $filters, $functions)
|
64
|
{
|
65
|
if ($this->isSandboxed()) {
|
66
|
$this->policy->checkSecurity($tags, $filters, $functions);
|
67
|
}
|
68
|
}
|
69
|
|
70
|
public function checkMethodAllowed($obj, $method)
|
71
|
{
|
72
|
if ($this->isSandboxed()) {
|
73
|
$this->policy->checkMethodAllowed($obj, $method);
|
74
|
}
|
75
|
}
|
76
|
|
77
|
public function checkPropertyAllowed($obj, $method)
|
78
|
{
|
79
|
if ($this->isSandboxed()) {
|
80
|
$this->policy->checkPropertyAllowed($obj, $method);
|
81
|
}
|
82
|
}
|
83
|
|
84
|
public function ensureToStringAllowed($obj)
|
85
|
{
|
86
|
if ($this->isSandboxed() && is_object($obj)) {
|
87
|
$this->policy->checkMethodAllowed($obj, '__toString');
|
88
|
}
|
89
|
|
90
|
return $obj;
|
91
|
}
|
92
|
|
93
|
public function getName()
|
94
|
{
|
95
|
return 'sandbox';
|
96
|
}
|
97
|
}
|