TempPath.php
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<?php
/**
* Returns the temporary folder path that silverstripe should use for its cache files.
*
* @package framework
* @subpackage core
*
* @param $base The base path to use for determining the temporary path
* @return string Path to temp
*/
function getTempFolder($base = null) {
$parent = getTempParentFolder($base);
// The actual temp folder is a subfolder of getTempParentFolder(), named by username
$subfolder = $parent . DIRECTORY_SEPARATOR . getTempFolderUsername();
if(!@file_exists($subfolder)) {
mkdir($subfolder);
}
return $subfolder;
}
/**
* Returns as best a representation of the current username as we can glean.
*
* @package framework
* @subpackage core
*/
function getTempFolderUsername() {
$user = getenv('APACHE_RUN_USER');
if(!$user) $user = getenv('USER');
if(!$user) $user = getenv('USERNAME');
if(!$user && function_exists('posix_getuid')) {
$userDetails = posix_getpwuid(posix_getuid());
$user = $userDetails['name'];
}
if(!$user) $user = 'unknown';
$user = preg_replace('/[^A-Za-z0-9_\-]/', '', $user);
return $user;
}
/**
* Return the parent folder of the temp folder.
* The temp folder will be a subfolder of this, named by username.
* This structure prevents permission problems.
*
* @package framework
* @subpackage core
*/
function getTempParentFolder($base = null) {
if(!$base && defined('BASE_PATH')) $base = BASE_PATH;
$tempPath = '';
$worked = true;
// first, try finding a silverstripe-cache dir built off the base path
$tempPath = $base . DIRECTORY_SEPARATOR . 'silverstripe-cache';
if(@file_exists($tempPath)) {
if((fileperms($tempPath) & 0777) != 0777) {
@chmod($tempPath, 0777);
}
return $tempPath;
}
// failing the above, try finding a namespaced silverstripe-cache dir in the system temp
$tempPath = sys_get_temp_dir() . DIRECTORY_SEPARATOR .
'silverstripe-cache-php' . preg_replace('/[^\w-\.+]+/', '-', PHP_VERSION) .
str_replace(array(' ', '/', ':', '\\'), '-', $base);
if(!@file_exists($tempPath)) {
$oldUMask = umask(0);
$worked = @mkdir($tempPath, 0777);
umask($oldUMask);
// if the folder already exists, correct perms
} else {
if((fileperms($tempPath) & 0777) != 0777) {
@chmod($tempPath, 0777);
}
}
// failing to use the system path, attempt to create a local silverstripe-cache dir
if(!$worked) {
$worked = true;
$tempPath = $base . DIRECTORY_SEPARATOR . 'silverstripe-cache';
if(!@file_exists($tempPath)) {
$oldUMask = umask(0);
$worked = @mkdir($tempPath, 0777);
umask($oldUMask);
}
}
if(!$worked) {
throw new Exception(
'Permission problem gaining access to a temp folder. ' .
'Please create a folder named silverstripe-cache in the base folder ' .
'of the installation and ensure it has the correct permissions'
);
}
return $tempPath;
}