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- optimize file path normalization

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This commit is contained in:
Uwe Tews
2015-06-28 12:54:47 +02:00
parent c1ae1a52af
commit cd132140f2
3 changed files with 18 additions and 47 deletions
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libs/sysplugins/smarty_internal_resource_file.php
+12 -41
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@@ -17,13 +17,6 @@
*/
class Smarty_Internal_Resource_File extends Smarty_Resource
{
/**
* Inverse DS
*
* @var string
*/
private $invDS = '';
/**
* build template filepath by traversing the template_dir array
*
@@ -36,21 +29,19 @@ class Smarty_Internal_Resource_File extends Smarty_Resource
protected function buildFilepath(Smarty_Template_Source $source, Smarty_Internal_Template $_template = null)
{
$file = $source->name;
$this->invDS = (DS == '/') ? '\\\\' : '/';
preg_match('#(^(?P<absolute>[\\\/]|[a-zA-Z]:[\\\/])|(\[(?P<index>[^\]]+)\])|(?P<rel>\.[\\\/]))|((?P<rel2>\.[\\\/])|(?P<ds>[' . $this->invDS . ']))#', $file, $fileMatch);
// save basename
if (!empty($fileMatch['absolute'])) {
$file = $this->normalizePath($file);
// absolute file ?
if ($file[0] == '/' || $file[1] == ':' ) {
$file = $source->smarty->_realpath($file);
return is_file($file) ? $file : false;
}
// go relative to a given template?
if (!empty($fileMatch['rel']) && $_template && $_template->parent instanceof Smarty_Internal_Template) {
if ($file[0] == '.' && $_template && $_template->parent instanceof Smarty_Internal_Template && preg_match('#^[.]{1,2}[\\\/]#', $file)) {
if ($_template->parent->source->type != 'file' && $_template->parent->source->type != 'extends' && !$_template->parent->allow_relative_path) {
throw new SmartyException("Template '{$file}' cannot be relative to template of resource type '{$_template->parent->source->type}'");
}
$path = dirname($_template->parent->source->filepath) . DS . $file;
// normalize path
$path = $this->normalizePath($path);
$path = $source->smarty->_realpath($path);
// files relative to a template only get one shot
return is_file($path) ? $path : false;
}
@@ -61,8 +52,8 @@ class Smarty_Internal_Resource_File extends Smarty_Resource
$_directories = $source->smarty->getTemplateDir();
}
// template_dir index?
if (!empty($fileMatch['index'])) {
$index = $fileMatch['index'];
if ($file[0] == '[' && preg_match('#^\[([^\]]+)\](.+)$#', $file, $fileMatch)) {
$index = $fileMatch[1];
$_directory = null;
// try string indexes
if (isset($_directories[$index])) {
@@ -79,9 +70,8 @@ class Smarty_Internal_Resource_File extends Smarty_Resource
}
}
if ($_directory) {
preg_match('#\](.+)$#', $file, $fileMatch);
$path = $_directory . $fileMatch[1];
$path = $this->normalizePath($path);
$path = $_directory . $fileMatch[2];
$path = $source->smarty->_realpath($path);
if (is_file($path)) {
return $path;
}
@@ -91,11 +81,10 @@ class Smarty_Internal_Resource_File extends Smarty_Resource
}
}
$normalize = !empty($fileMatch['rel']) || !empty($fileMatch['rel2']) || !empty($fileMatch['ds']);
// relative file name?
foreach ($_directories as $_directory) {
$_filepath = $_directory . $file;
$path = $normalize ? $this->normalizePath($_filepath) : $_filepath;
$path = $source->smarty->_realpath($_filepath);
if (is_file($path)) {
return $path;
}
@@ -107,7 +96,7 @@ class Smarty_Internal_Resource_File extends Smarty_Resource
$_filepath = Smarty_Internal_Get_Include_Path::getIncludePath($_filepath);
}
if ($_filepath !== false) {
$path = $this->normalizePath($_filepath);
$path = $source->smarty->_realpath($_filepath);
if (is_file($path)) {
return $path;
}
@@ -115,28 +104,10 @@ class Smarty_Internal_Resource_File extends Smarty_Resource
}
}
// Could be relative to cwd
$path = $this->normalizePath(getcwd() . DS . $file);
$path = $source->smarty->_realpath($file);
return is_file($path) ? $path : false;
}
/**
* Normalize path
* - remove /./ and /../
* - make it absolute
*
* @param string $path file path
*
* @return string
*/
public function normalizePath($path)
{
$first = true;
while (strrpos($path, '.' . DS) !== false || ($first && strrpos($path, $this->invDS[0]) !== false)) {
$path = preg_replace('#([\\\/]+([.][\\\/]+)+)|([\\\/]+([^\\\/]+[\\\/]+){2}([.][.][\\\/]+){2})|([\\\/]+[^\\\/]+[\\\/]+[.][.][\\\/]+)|[' . $this->invDS . ']+#', DS, $path);
$first = false;
}
return $path;
}
/**
* test is file exists and save timestamp