mirror of
https://github.com/slawkens/myaac.git
synced 2025-10-14 09:44:55 +02:00
* fixed Twig loading on case-sensitive systems
This commit is contained in:
157
system/libs/Twig/NodeVisitor/Escaper.php
Executable file
157
system/libs/Twig/NodeVisitor/Escaper.php
Executable file
@@ -0,0 +1,157 @@
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<?php
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||||
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/*
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||||
* This file is part of Twig.
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||||
*
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||||
* (c) 2009 Fabien Potencier
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||||
*
|
||||
* For the full copyright and license information, please view the LICENSE
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||||
* file that was distributed with this source code.
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||||
*/
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||||
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||||
/**
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* Twig_NodeVisitor_Escaper implements output escaping.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class Twig_NodeVisitor_Escaper extends Twig_BaseNodeVisitor
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{
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protected $statusStack = array();
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protected $blocks = array();
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protected $safeAnalysis;
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protected $traverser;
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protected $defaultStrategy = false;
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protected $safeVars = array();
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||||
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||||
public function __construct()
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||||
{
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$this->safeAnalysis = new Twig_NodeVisitor_SafeAnalysis();
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}
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/**
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* {@inheritdoc}
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*/
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protected function doEnterNode(Twig_Node $node, Twig_Environment $env)
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{
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if ($node instanceof Twig_Node_Module) {
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if ($env->hasExtension('escaper') && $defaultStrategy = $env->getExtension('escaper')->getDefaultStrategy($node->getAttribute('filename'))) {
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$this->defaultStrategy = $defaultStrategy;
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}
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$this->safeVars = array();
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} elseif ($node instanceof Twig_Node_AutoEscape) {
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$this->statusStack[] = $node->getAttribute('value');
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} elseif ($node instanceof Twig_Node_Block) {
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$this->statusStack[] = isset($this->blocks[$node->getAttribute('name')]) ? $this->blocks[$node->getAttribute('name')] : $this->needEscaping($env);
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} elseif ($node instanceof Twig_Node_Import) {
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$this->safeVars[] = $node->getNode('var')->getAttribute('name');
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}
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return $node;
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}
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/**
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* {@inheritdoc}
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*/
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protected function doLeaveNode(Twig_Node $node, Twig_Environment $env)
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{
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if ($node instanceof Twig_Node_Module) {
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$this->defaultStrategy = false;
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$this->safeVars = array();
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} elseif ($node instanceof Twig_Node_Expression_Filter) {
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return $this->preEscapeFilterNode($node, $env);
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} elseif ($node instanceof Twig_Node_Print) {
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return $this->escapePrintNode($node, $env, $this->needEscaping($env));
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}
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if ($node instanceof Twig_Node_AutoEscape || $node instanceof Twig_Node_Block) {
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array_pop($this->statusStack);
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} elseif ($node instanceof Twig_Node_BlockReference) {
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$this->blocks[$node->getAttribute('name')] = $this->needEscaping($env);
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}
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return $node;
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}
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protected function escapePrintNode(Twig_Node_Print $node, Twig_Environment $env, $type)
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{
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if (false === $type) {
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return $node;
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}
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$expression = $node->getNode('expr');
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if ($this->isSafeFor($type, $expression, $env)) {
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return $node;
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}
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$class = get_class($node);
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return new $class(
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$this->getEscaperFilter($type, $expression),
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$node->getLine()
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);
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}
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protected function preEscapeFilterNode(Twig_Node_Expression_Filter $filter, Twig_Environment $env)
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{
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$name = $filter->getNode('filter')->getAttribute('value');
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$type = $env->getFilter($name)->getPreEscape();
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if (null === $type) {
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return $filter;
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}
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$node = $filter->getNode('node');
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if ($this->isSafeFor($type, $node, $env)) {
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return $filter;
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}
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$filter->setNode('node', $this->getEscaperFilter($type, $node));
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return $filter;
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}
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protected function isSafeFor($type, Twig_NodeInterface $expression, $env)
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{
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$safe = $this->safeAnalysis->getSafe($expression);
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if (null === $safe) {
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if (null === $this->traverser) {
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$this->traverser = new Twig_NodeTraverser($env, array($this->safeAnalysis));
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}
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$this->safeAnalysis->setSafeVars($this->safeVars);
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$this->traverser->traverse($expression);
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$safe = $this->safeAnalysis->getSafe($expression);
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}
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return in_array($type, $safe) || in_array('all', $safe);
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}
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protected function needEscaping(Twig_Environment $env)
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{
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if (count($this->statusStack)) {
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return $this->statusStack[count($this->statusStack) - 1];
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}
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return $this->defaultStrategy ? $this->defaultStrategy : false;
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}
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protected function getEscaperFilter($type, Twig_NodeInterface $node)
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{
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$line = $node->getLine();
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$name = new Twig_Node_Expression_Constant('escape', $line);
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$args = new Twig_Node(array(new Twig_Node_Expression_Constant((string) $type, $line), new Twig_Node_Expression_Constant(null, $line), new Twig_Node_Expression_Constant(true, $line)));
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return new Twig_Node_Expression_Filter($node, $name, $args, $line);
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}
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/**
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* {@inheritdoc}
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*/
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public function getPriority()
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{
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return 0;
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}
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}
|
271
system/libs/Twig/NodeVisitor/Optimizer.php
Executable file
271
system/libs/Twig/NodeVisitor/Optimizer.php
Executable file
@@ -0,0 +1,271 @@
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<?php
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/*
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||||
* This file is part of Twig.
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*
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||||
* (c) 2010 Fabien Potencier
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*
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||||
* For the full copyright and license information, please view the LICENSE
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||||
* file that was distributed with this source code.
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*/
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||||
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||||
/**
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* Twig_NodeVisitor_Optimizer tries to optimizes the AST.
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*
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* This visitor is always the last registered one.
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*
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* You can configure which optimizations you want to activate via the
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* optimizer mode.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class Twig_NodeVisitor_Optimizer extends Twig_BaseNodeVisitor
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{
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const OPTIMIZE_ALL = -1;
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const OPTIMIZE_NONE = 0;
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const OPTIMIZE_FOR = 2;
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const OPTIMIZE_RAW_FILTER = 4;
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const OPTIMIZE_VAR_ACCESS = 8;
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protected $loops = array();
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protected $loopsTargets = array();
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protected $optimizers;
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protected $prependedNodes = array();
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protected $inABody = false;
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/**
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* Constructor.
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*
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* @param int $optimizers The optimizer mode
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*/
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public function __construct($optimizers = -1)
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{
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if (!is_int($optimizers) || $optimizers > (self::OPTIMIZE_FOR | self::OPTIMIZE_RAW_FILTER | self::OPTIMIZE_VAR_ACCESS)) {
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throw new InvalidArgumentException(sprintf('Optimizer mode "%s" is not valid.', $optimizers));
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}
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$this->optimizers = $optimizers;
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}
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||||
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||||
/**
|
||||
* {@inheritdoc}
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*/
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||||
protected function doEnterNode(Twig_Node $node, Twig_Environment $env)
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||||
{
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||||
if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) {
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$this->enterOptimizeFor($node, $env);
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||||
}
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if (PHP_VERSION_ID < 50400 && self::OPTIMIZE_VAR_ACCESS === (self::OPTIMIZE_VAR_ACCESS & $this->optimizers) && !$env->isStrictVariables() && !$env->hasExtension('sandbox')) {
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||||
if ($this->inABody) {
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||||
if (!$node instanceof Twig_Node_Expression) {
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if (get_class($node) !== 'Twig_Node') {
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array_unshift($this->prependedNodes, array());
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}
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||||
} else {
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||||
$node = $this->optimizeVariables($node, $env);
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||||
}
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||||
} elseif ($node instanceof Twig_Node_Body) {
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||||
$this->inABody = true;
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||||
}
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||||
}
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||||
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||||
return $node;
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}
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||||
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||||
/**
|
||||
* {@inheritdoc}
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||||
*/
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||||
protected function doLeaveNode(Twig_Node $node, Twig_Environment $env)
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||||
{
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||||
$expression = $node instanceof Twig_Node_Expression;
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||||
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||||
if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) {
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||||
$this->leaveOptimizeFor($node, $env);
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||||
}
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||||
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||||
if (self::OPTIMIZE_RAW_FILTER === (self::OPTIMIZE_RAW_FILTER & $this->optimizers)) {
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||||
$node = $this->optimizeRawFilter($node, $env);
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}
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||||
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$node = $this->optimizePrintNode($node, $env);
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||||
if (self::OPTIMIZE_VAR_ACCESS === (self::OPTIMIZE_VAR_ACCESS & $this->optimizers) && !$env->isStrictVariables() && !$env->hasExtension('sandbox')) {
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||||
if ($node instanceof Twig_Node_Body) {
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||||
$this->inABody = false;
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||||
} elseif ($this->inABody) {
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||||
if (!$expression && get_class($node) !== 'Twig_Node' && $prependedNodes = array_shift($this->prependedNodes)) {
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||||
$nodes = array();
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||||
foreach (array_unique($prependedNodes) as $name) {
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||||
$nodes[] = new Twig_Node_SetTemp($name, $node->getLine());
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||||
}
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||||
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||||
$nodes[] = $node;
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||||
$node = new Twig_Node($nodes);
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||||
}
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||||
}
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||||
}
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||||
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||||
return $node;
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||||
}
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||||
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||||
protected function optimizeVariables(Twig_NodeInterface $node, Twig_Environment $env)
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||||
{
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||||
if ('Twig_Node_Expression_Name' === get_class($node) && $node->isSimple()) {
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||||
$this->prependedNodes[0][] = $node->getAttribute('name');
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||||
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||||
return new Twig_Node_Expression_TempName($node->getAttribute('name'), $node->getLine());
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||||
}
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||||
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||||
return $node;
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||||
}
|
||||
|
||||
/**
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||||
* Optimizes print nodes.
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||||
*
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||||
* It replaces:
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||||
*
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||||
* * "echo $this->render(Parent)Block()" with "$this->display(Parent)Block()"
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||||
*
|
||||
* @param Twig_NodeInterface $node A Node
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||||
* @param Twig_Environment $env The current Twig environment
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||||
*
|
||||
* @return Twig_NodeInterface
|
||||
*/
|
||||
protected function optimizePrintNode(Twig_NodeInterface $node, Twig_Environment $env)
|
||||
{
|
||||
if (!$node instanceof Twig_Node_Print) {
|
||||
return $node;
|
||||
}
|
||||
|
||||
if (
|
||||
$node->getNode('expr') instanceof Twig_Node_Expression_BlockReference ||
|
||||
$node->getNode('expr') instanceof Twig_Node_Expression_Parent
|
||||
) {
|
||||
$node->getNode('expr')->setAttribute('output', true);
|
||||
|
||||
return $node->getNode('expr');
|
||||
}
|
||||
|
||||
return $node;
|
||||
}
|
||||
|
||||
/**
|
||||
* Removes "raw" filters.
|
||||
*
|
||||
* @param Twig_NodeInterface $node A Node
|
||||
* @param Twig_Environment $env The current Twig environment
|
||||
*
|
||||
* @return Twig_NodeInterface
|
||||
*/
|
||||
protected function optimizeRawFilter(Twig_NodeInterface $node, Twig_Environment $env)
|
||||
{
|
||||
if ($node instanceof Twig_Node_Expression_Filter && 'raw' == $node->getNode('filter')->getAttribute('value')) {
|
||||
return $node->getNode('node');
|
||||
}
|
||||
|
||||
return $node;
|
||||
}
|
||||
|
||||
/**
|
||||
* Optimizes "for" tag by removing the "loop" variable creation whenever possible.
|
||||
*
|
||||
* @param Twig_NodeInterface $node A Node
|
||||
* @param Twig_Environment $env The current Twig environment
|
||||
*/
|
||||
protected function enterOptimizeFor(Twig_NodeInterface $node, Twig_Environment $env)
|
||||
{
|
||||
if ($node instanceof Twig_Node_For) {
|
||||
// disable the loop variable by default
|
||||
$node->setAttribute('with_loop', false);
|
||||
array_unshift($this->loops, $node);
|
||||
array_unshift($this->loopsTargets, $node->getNode('value_target')->getAttribute('name'));
|
||||
array_unshift($this->loopsTargets, $node->getNode('key_target')->getAttribute('name'));
|
||||
} elseif (!$this->loops) {
|
||||
// we are outside a loop
|
||||
return;
|
||||
}
|
||||
|
||||
// when do we need to add the loop variable back?
|
||||
|
||||
// the loop variable is referenced for the current loop
|
||||
elseif ($node instanceof Twig_Node_Expression_Name && 'loop' === $node->getAttribute('name')) {
|
||||
$node->setAttribute('always_defined', true);
|
||||
$this->addLoopToCurrent();
|
||||
}
|
||||
|
||||
// optimize access to loop targets
|
||||
elseif ($node instanceof Twig_Node_Expression_Name && in_array($node->getAttribute('name'), $this->loopsTargets)) {
|
||||
$node->setAttribute('always_defined', true);
|
||||
}
|
||||
|
||||
// block reference
|
||||
elseif ($node instanceof Twig_Node_BlockReference || $node instanceof Twig_Node_Expression_BlockReference) {
|
||||
$this->addLoopToCurrent();
|
||||
}
|
||||
|
||||
// include without the only attribute
|
||||
elseif ($node instanceof Twig_Node_Include && !$node->getAttribute('only')) {
|
||||
$this->addLoopToAll();
|
||||
}
|
||||
|
||||
// include function without the with_context=false parameter
|
||||
elseif ($node instanceof Twig_Node_Expression_Function
|
||||
&& 'include' === $node->getAttribute('name')
|
||||
&& (!$node->getNode('arguments')->hasNode('with_context')
|
||||
|| false !== $node->getNode('arguments')->getNode('with_context')->getAttribute('value')
|
||||
)
|
||||
) {
|
||||
$this->addLoopToAll();
|
||||
}
|
||||
|
||||
// the loop variable is referenced via an attribute
|
||||
elseif ($node instanceof Twig_Node_Expression_GetAttr
|
||||
&& (!$node->getNode('attribute') instanceof Twig_Node_Expression_Constant
|
||||
|| 'parent' === $node->getNode('attribute')->getAttribute('value')
|
||||
)
|
||||
&& (true === $this->loops[0]->getAttribute('with_loop')
|
||||
|| ($node->getNode('node') instanceof Twig_Node_Expression_Name
|
||||
&& 'loop' === $node->getNode('node')->getAttribute('name')
|
||||
)
|
||||
)
|
||||
) {
|
||||
$this->addLoopToAll();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Optimizes "for" tag by removing the "loop" variable creation whenever possible.
|
||||
*
|
||||
* @param Twig_NodeInterface $node A Node
|
||||
* @param Twig_Environment $env The current Twig environment
|
||||
*/
|
||||
protected function leaveOptimizeFor(Twig_NodeInterface $node, Twig_Environment $env)
|
||||
{
|
||||
if ($node instanceof Twig_Node_For) {
|
||||
array_shift($this->loops);
|
||||
array_shift($this->loopsTargets);
|
||||
array_shift($this->loopsTargets);
|
||||
}
|
||||
}
|
||||
|
||||
protected function addLoopToCurrent()
|
||||
{
|
||||
$this->loops[0]->setAttribute('with_loop', true);
|
||||
}
|
||||
|
||||
protected function addLoopToAll()
|
||||
{
|
||||
foreach ($this->loops as $loop) {
|
||||
$loop->setAttribute('with_loop', true);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function getPriority()
|
||||
{
|
||||
return 255;
|
||||
}
|
||||
}
|
154
system/libs/Twig/NodeVisitor/SafeAnalysis.php
Executable file
154
system/libs/Twig/NodeVisitor/SafeAnalysis.php
Executable file
@@ -0,0 +1,154 @@
|
||||
<?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_NodeVisitor_SafeAnalysis extends Twig_BaseNodeVisitor
|
||||
{
|
||||
protected $data = array();
|
||||
protected $safeVars = array();
|
||||
|
||||
public function setSafeVars($safeVars)
|
||||
{
|
||||
$this->safeVars = $safeVars;
|
||||
}
|
||||
|
||||
public function getSafe(Twig_NodeInterface $node)
|
||||
{
|
||||
$hash = spl_object_hash($node);
|
||||
if (!isset($this->data[$hash])) {
|
||||
return;
|
||||
}
|
||||
|
||||
foreach ($this->data[$hash] as $bucket) {
|
||||
if ($bucket['key'] !== $node) {
|
||||
continue;
|
||||
}
|
||||
|
||||
if (in_array('html_attr', $bucket['value'])) {
|
||||
$bucket['value'][] = 'html';
|
||||
}
|
||||
|
||||
return $bucket['value'];
|
||||
}
|
||||
}
|
||||
|
||||
protected function setSafe(Twig_NodeInterface $node, array $safe)
|
||||
{
|
||||
$hash = spl_object_hash($node);
|
||||
if (isset($this->data[$hash])) {
|
||||
foreach ($this->data[$hash] as &$bucket) {
|
||||
if ($bucket['key'] === $node) {
|
||||
$bucket['value'] = $safe;
|
||||
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
$this->data[$hash][] = array(
|
||||
'key' => $node,
|
||||
'value' => $safe,
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
protected function doEnterNode(Twig_Node $node, Twig_Environment $env)
|
||||
{
|
||||
return $node;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
protected function doLeaveNode(Twig_Node $node, Twig_Environment $env)
|
||||
{
|
||||
if ($node instanceof Twig_Node_Expression_Constant) {
|
||||
// constants are marked safe for all
|
||||
$this->setSafe($node, array('all'));
|
||||
} elseif ($node instanceof Twig_Node_Expression_BlockReference) {
|
||||
// blocks are safe by definition
|
||||
$this->setSafe($node, array('all'));
|
||||
} elseif ($node instanceof Twig_Node_Expression_Parent) {
|
||||
// parent block is safe by definition
|
||||
$this->setSafe($node, array('all'));
|
||||
} elseif ($node instanceof Twig_Node_Expression_Conditional) {
|
||||
// intersect safeness of both operands
|
||||
$safe = $this->intersectSafe($this->getSafe($node->getNode('expr2')), $this->getSafe($node->getNode('expr3')));
|
||||
$this->setSafe($node, $safe);
|
||||
} elseif ($node instanceof Twig_Node_Expression_Filter) {
|
||||
// filter expression is safe when the filter is safe
|
||||
$name = $node->getNode('filter')->getAttribute('value');
|
||||
$args = $node->getNode('arguments');
|
||||
if (false !== $filter = $env->getFilter($name)) {
|
||||
$safe = $filter->getSafe($args);
|
||||
if (null === $safe) {
|
||||
$safe = $this->intersectSafe($this->getSafe($node->getNode('node')), $filter->getPreservesSafety());
|
||||
}
|
||||
$this->setSafe($node, $safe);
|
||||
} else {
|
||||
$this->setSafe($node, array());
|
||||
}
|
||||
} elseif ($node instanceof Twig_Node_Expression_Function) {
|
||||
// function expression is safe when the function is safe
|
||||
$name = $node->getAttribute('name');
|
||||
$args = $node->getNode('arguments');
|
||||
$function = $env->getFunction($name);
|
||||
if (false !== $function) {
|
||||
$this->setSafe($node, $function->getSafe($args));
|
||||
} else {
|
||||
$this->setSafe($node, array());
|
||||
}
|
||||
} elseif ($node instanceof Twig_Node_Expression_MethodCall) {
|
||||
if ($node->getAttribute('safe')) {
|
||||
$this->setSafe($node, array('all'));
|
||||
} else {
|
||||
$this->setSafe($node, array());
|
||||
}
|
||||
} elseif ($node instanceof Twig_Node_Expression_GetAttr && $node->getNode('node') instanceof Twig_Node_Expression_Name) {
|
||||
$name = $node->getNode('node')->getAttribute('name');
|
||||
// attributes on template instances are safe
|
||||
if ('_self' == $name || in_array($name, $this->safeVars)) {
|
||||
$this->setSafe($node, array('all'));
|
||||
} else {
|
||||
$this->setSafe($node, array());
|
||||
}
|
||||
} else {
|
||||
$this->setSafe($node, array());
|
||||
}
|
||||
|
||||
return $node;
|
||||
}
|
||||
|
||||
protected function intersectSafe(array $a = null, array $b = null)
|
||||
{
|
||||
if (null === $a || null === $b) {
|
||||
return array();
|
||||
}
|
||||
|
||||
if (in_array('all', $a)) {
|
||||
return $b;
|
||||
}
|
||||
|
||||
if (in_array('all', $b)) {
|
||||
return $a;
|
||||
}
|
||||
|
||||
return array_intersect($a, $b);
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function getPriority()
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
}
|
82
system/libs/Twig/NodeVisitor/Sandbox.php
Executable file
82
system/libs/Twig/NodeVisitor/Sandbox.php
Executable file
@@ -0,0 +1,82 @@
|
||||
<?php
|
||||
|
||||
/*
|
||||
* This file is part of Twig.
|
||||
*
|
||||
* (c) 2009 Fabien Potencier
|
||||
*
|
||||
* For the full copyright and license information, please view the LICENSE
|
||||
* file that was distributed with this source code.
|
||||
*/
|
||||
|
||||
/**
|
||||
* Twig_NodeVisitor_Sandbox implements sandboxing.
|
||||
*
|
||||
* @author Fabien Potencier <fabien@symfony.com>
|
||||
*/
|
||||
class Twig_NodeVisitor_Sandbox extends Twig_BaseNodeVisitor
|
||||
{
|
||||
protected $inAModule = false;
|
||||
protected $tags;
|
||||
protected $filters;
|
||||
protected $functions;
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
protected function doEnterNode(Twig_Node $node, Twig_Environment $env)
|
||||
{
|
||||
if ($node instanceof Twig_Node_Module) {
|
||||
$this->inAModule = true;
|
||||
$this->tags = array();
|
||||
$this->filters = array();
|
||||
$this->functions = array();
|
||||
|
||||
return $node;
|
||||
} elseif ($this->inAModule) {
|
||||
// look for tags
|
||||
if ($node->getNodeTag() && !isset($this->tags[$node->getNodeTag()])) {
|
||||
$this->tags[$node->getNodeTag()] = $node;
|
||||
}
|
||||
|
||||
// look for filters
|
||||
if ($node instanceof Twig_Node_Expression_Filter && !isset($this->filters[$node->getNode('filter')->getAttribute('value')])) {
|
||||
$this->filters[$node->getNode('filter')->getAttribute('value')] = $node;
|
||||
}
|
||||
|
||||
// look for functions
|
||||
if ($node instanceof Twig_Node_Expression_Function && !isset($this->functions[$node->getAttribute('name')])) {
|
||||
$this->functions[$node->getAttribute('name')] = $node;
|
||||
}
|
||||
|
||||
// wrap print to check __toString() calls
|
||||
if ($node instanceof Twig_Node_Print) {
|
||||
return new Twig_Node_SandboxedPrint($node->getNode('expr'), $node->getLine(), $node->getNodeTag());
|
||||
}
|
||||
}
|
||||
|
||||
return $node;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
protected function doLeaveNode(Twig_Node $node, Twig_Environment $env)
|
||||
{
|
||||
if ($node instanceof Twig_Node_Module) {
|
||||
$this->inAModule = false;
|
||||
|
||||
$node->setNode('display_start', new Twig_Node(array(new Twig_Node_CheckSecurity($this->filters, $this->tags, $this->functions), $node->getNode('display_start'))));
|
||||
}
|
||||
|
||||
return $node;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function getPriority()
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
}
|
Reference in New Issue
Block a user