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- optimization of _realpath

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uwetews
2016-02-25 23:36:53 +01:00
parent 8df91e9d0d
commit a5b465e2c6
2 changed files with 19 additions and 18 deletions
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1
change_log.txt
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@@ -1,6 +1,7 @@
 ===== 3.1.30-dev ===== (xx.xx.xx)
25.02.2016
- bugfix wrong _realpath with 4 or more parent-directories https://github.com/smarty-php/smarty/issues/190
- optimization of _realpath
20.02.2016
- bugfix {strip} must keep space between hmtl tags. Broken by changes of 10.2.2016 https://github.com/smarty-php/smarty/issues/184

30
libs/Smarty.class.php
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@@ -121,7 +121,7 @@ class Smarty extends Smarty_Internal_TemplateBase
/**
* smarty version
*/
const SMARTY_VERSION = '3.1.30-dev/48';
const SMARTY_VERSION = '3.1.30-dev/49';
/**
* define variable scopes
@@ -1140,14 +1140,9 @@ class Smarty extends Smarty_Internal_TemplateBase
*/
public function _realpath($path, $realpath = null)
{
static $nds;
if ($nds == null) {
$nds = DS == '/' ? '\\' : '/';
}
// normalize DS
if (strpos($path, $nds) !== false) {
$path = str_replace($nds, DS, $path);
}
preg_match('%^(?<root>(?:[[:alpha:]]:[\\\\]|/|[\\\\]{2}[[:alpha:]]+|[[:print:]]{2,}:[/]{2}|[\\\\])?)(?<path>(?:[[:print:]]*))$%',
$path, $parts);
$path = $parts[ 'path' ];
@@ -1158,17 +1153,22 @@ class Smarty extends Smarty_Internal_TemplateBase
$path = getcwd() . DS . $path;
}
}
$count = 1;
if (strpos($path, '..' . DS) != false) {
preg_match('#(([.]?[\\\\/])*([.][.])[\\\\/]([.]?[\\\\/])*)+#', $path, $match);
if (!$count = substr_count($match[ 0 ], '..')) {
$count = 1;
// remove noop 'DS DS' and 'DS.DS' patterns
$path = preg_replace('#([\\\\/]([.]?[\\\\/])+)#', DS, $path);
// resolve '..DS' pattern, smallest first
if (strpos($path, '..' . DS) != false &&
preg_match_all('#(([.]?[\\\\/])*([.][.])[\\\\/]([.]?[\\\\/])*)+#', $path, $match)
) {
$counts = array();
foreach ($match[ 0 ] as $m) {
$counts[] = (int) ((strlen($m) - 1) / 3);
}
sort($counts);
foreach ($counts as $count) {
$path = preg_replace('#(([\\\\/]([.]?[\\\\/])*[^\\\\/.]+){' . $count .
'}[\\\\/]([.]?[\\\\/])*([.][.][\\\\/]([.]?[\\\\/])*){' . $count . '})(?=[^.])#',
DS, $path);
}
while ($count && ((strpos($path, '.' . DS) != false) || (strpos($path, DS . DS) != false))) {
$path = preg_replace('#([\\\\/]([.]?[\\\\/])*[^\\\\/.]+){' . $count .
'}[\\\\/]([.]?[\\\\/])*([.][.][\\\\/]([.]?[\\\\/])*){' . $count .
'}|([\\\\/]([.]?[\\\\/])+)#', DS, $path, - 1, $count);
}
return $parts[ 'root' ] . $path;