TrackManiaControl/application/core/Files/FileUtil.php

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<?php
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namespace ManiaControl\Files;
use ManiaControl\Logger;
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use ManiaControl\ManiaControl;
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use ManiaControl\Utils\Formatter;
/**
* Files Utility Class
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*
* @author ManiaControl Team <mail@maniacontrol.com>
* @copyright 2014 ManiaControl Team
* @license http://www.gnu.org/licenses/ GNU General Public License, Version 3
*/
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abstract class FileUtil {
/**
* Load a remote file
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*
* @param string $url
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* @param string $contentType
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* @return string
*/
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public static function loadFile($url, $contentType = 'UTF-8') {
if (!$url) {
return null;
}
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$urlData = parse_url($url);
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$host = $urlData['host'];
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$port = (isset($urlData['port']) ? $urlData['port'] : 80);
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$urlQuery = (isset($urlData['query']) ? '?' . $urlData['query'] : '');
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$fsock = fsockopen($host, $port);
if (!is_resource($fsock)) {
trigger_error("Couldn't open socket connection to '{$host}' on port '{$port}'!");
return null;
}
stream_set_timeout($fsock, 3);
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$query = 'GET ' . $urlData['path'] . $urlQuery . ' HTTP/1.0' . PHP_EOL;
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$query .= 'Host: ' . $host . PHP_EOL;
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$query .= 'Content-Type: ' . $contentType . PHP_EOL;
$query .= 'User-Agent: ManiaControl v' . ManiaControl::VERSION . PHP_EOL;
$query .= PHP_EOL;
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fwrite($fsock, $query);
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$buffer = '';
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$info = array('timed_out' => false);
while (!feof($fsock) && !$info['timed_out']) {
$buffer .= fread($fsock, 1024);
$info = stream_get_meta_data($fsock);
}
fclose($fsock);
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if ($info['timed_out'] || !$buffer) {
return null;
}
if (substr($buffer, 9, 3) !== '200') {
return null;
}
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$result = explode("\r\n\r\n", $buffer, 2);
if (count($result) < 2) {
return null;
}
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return $result[1];
}
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/**
* Load Config XML File
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*
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* @param string $fileName
* @return \SimpleXMLElement
*/
public static function loadConfig($fileName) {
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$fileLocation = ManiaControlDir . 'configs' . DIRECTORY_SEPARATOR . $fileName;
if (!file_exists($fileLocation)) {
Logger::log("Config file doesn't exist! ({$fileName})");
return null;
}
if (!is_readable($fileLocation)) {
Logger::log("Config file isn't readable! Please check the file permissions. ({$fileName})");
return null;
}
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$configXml = @simplexml_load_file($fileLocation);
if (!$configXml) {
Logger::log("Config file isn't maintained properly! ({$fileName})");
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return null;
}
return $configXml;
}
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/**
* Return file name cleared from special characters
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*
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* @param string $fileName
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* @return string
*/
public static function getClearedFileName($fileName) {
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$fileName = Formatter::stripCodes($fileName);
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$fileName = str_replace(array(DIRECTORY_SEPARATOR, '\\', '/', ':', '*', '?', '"', '<', '>', '|'), '_', $fileName);
$fileName = preg_replace('/[^[:print:]]/', '', $fileName);
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$fileName = Formatter::utf8($fileName);
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return $fileName;
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}
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/**
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* Delete the temporary folder if it's empty
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*
* @return bool
*/
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public static function deleteTempFolder() {
return self::deleteFolder(self::getTempFolder());
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}
/**
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* Delete the given folder if it's empty
*
* @param string $folderPath
* @param bool $onlyIfEmpty
* @return bool
*/
public static function deleteFolder($folderPath, $onlyIfEmpty = true) {
if ($onlyIfEmpty && !self::isFolderEmpty($folderPath)) {
return false;
}
return rmdir($folderPath);
}
/**
* Check if the given folder is empty
*
* @param string $folderPath
* @return bool
*/
public static function isFolderEmpty($folderPath) {
if (!is_readable($folderPath) || !is_dir($folderPath)) {
return false;
}
$files = scandir($folderPath);
return (count($files) <= 2);
}
/**
* Get the temporary folder and create it if necessary
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*
* @return string|bool
*/
public static function getTempFolder() {
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$tempFolder = ManiaControlDir . 'temp' . DIRECTORY_SEPARATOR;
if (!is_dir($tempFolder) && !mkdir($tempFolder)) {
trigger_error("Couldn't create the temp folder!");
return false;
}
if (!is_writeable($tempFolder)) {
trigger_error("ManiaControl doesn't have the necessary write rights for the temp folder!");
return false;
}
return $tempFolder;
}
/**
* Check if ManiaControl has sufficient Access to write to Files in the given Directories
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*
* @param mixed $directories
* @return bool
*/
public static function checkWritePermissions($directories) {
if (!is_array($directories)) {
$directories = array($directories);
}
foreach ($directories as $directory) {
$dir = new \RecursiveDirectoryIterator(ManiaControlDir . $directory);
foreach (new \RecursiveIteratorIterator($dir) as $fileName => $file) {
if (substr($fileName, 0, 1) === '.') {
continue;
}
if (!is_writable($fileName)) {
Logger::log("Write access missing for file '{$fileName}'!");
return false;
}
}
}
return true;
}
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/**
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* Clean the given directory by deleting old files
*
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* @param string $directory
* @param float $maxFileAgeInDays
* @param bool $recursive
* @return bool
*/
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public static function cleanDirectory($directory, $maxFileAgeInDays = 10., $recursive = false) {
if (!is_dir($directory) || !is_readable($directory)) {
return false;
}
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$dirHandle = opendir($directory);
if (!is_resource($dirHandle)) {
return false;
}
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$directory = self::appendDirectorySeparator($directory);
$time = time();
while ($fileName = readdir($dirHandle)) {
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$filePath = $directory . $fileName;
if (!is_readable($filePath)) {
continue;
}
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if (is_dir($filePath) && $recursive) {
// Directory
self::cleanDirectory($filePath . DIRECTORY_SEPARATOR, $maxFileAgeInDays, $recursive);
} else if (is_file($filePath)) {
// File
if (!is_writable($filePath)) {
continue;
}
$fileModTime = filemtime($filePath);
$timeDeltaDays = ($time - $fileModTime) / (24. * 3600.);
if ($timeDeltaDays > $maxFileAgeInDays) {
unlink($filePath);
}
}
}
closedir($dirHandle);
return true;
}
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/**
* Append the directory separator to the given path if necessary
*
* @param string $path
* @return string
*/
public static function appendDirectorySeparator($path) {
if (substr($path, -1, 1) !== DIRECTORY_SEPARATOR) {
$path .= DIRECTORY_SEPARATOR;
}
return $path;
}
}