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