]>
Commit | Line | Data |
---|---|---|
a4565e88 NL |
1 | <?php |
2 | ||
3 | /* | |
4 | * This file is part of Twig. | |
5 | * | |
6 | * (c) 2010 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 | ||
12 | /** | |
13 | * Marks a section of a template as untrusted code that must be evaluated in the sandbox mode. | |
14 | * | |
15 | * <pre> | |
16 | * {% sandbox %} | |
17 | * {% include 'user.html' %} | |
18 | * {% endsandbox %} | |
19 | * </pre> | |
20 | * | |
21 | * @see http://www.twig-project.org/doc/api.html#sandbox-extension for details | |
22 | */ | |
23 | class Twig_TokenParser_Sandbox extends Twig_TokenParser | |
24 | { | |
25 | /** | |
26 | * Parses a token and returns a node. | |
27 | * | |
28 | * @param Twig_Token $token A Twig_Token instance | |
29 | * | |
30 | * @return Twig_NodeInterface A Twig_NodeInterface instance | |
31 | */ | |
32 | public function parse(Twig_Token $token) | |
33 | { | |
34 | $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); | |
35 | $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true); | |
36 | $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); | |
37 | ||
38 | // in a sandbox tag, only include tags are allowed | |
39 | if (!$body instanceof Twig_Node_Include) { | |
40 | foreach ($body as $node) { | |
41 | if ($node instanceof Twig_Node_Text && ctype_space($node->getAttribute('data'))) { | |
42 | continue; | |
43 | } | |
44 | ||
45 | if (!$node instanceof Twig_Node_Include) { | |
46 | throw new Twig_Error_Syntax('Only "include" tags are allowed within a "sandbox" section', $node->getLine(), $this->parser->getFilename()); | |
47 | } | |
48 | } | |
49 | } | |
50 | ||
51 | return new Twig_Node_Sandbox($body, $token->getLine(), $this->getTag()); | |
52 | } | |
53 | ||
54 | public function decideBlockEnd(Twig_Token $token) | |
55 | { | |
56 | return $token->test('endsandbox'); | |
57 | } | |
58 | ||
59 | /** | |
60 | * Gets the tag name associated with this token parser. | |
61 | * | |
62 | * @return string The tag name | |
63 | */ | |
64 | public function getTag() | |
65 | { | |
66 | return 'sandbox'; | |
67 | } | |
68 | } |