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<?php
class CCloudTempFile
{
private static $buckets = array();
/**
* @return string
*/
protected static function GetAbsoluteRoot()
{
return "/tmp";
}
/**
* @param string $file_name
* @return bool
*/
public static function IsTempFile($file_name)
{
return preg_match("#^".self::GetAbsoluteRoot()."/BXTEMP-#", $file_name) > 0;
}
protected static $shutdownRegistered = false;
protected static function RegisterShutdown()
{
if (!self::$shutdownRegistered)
{
register_shutdown_function(array('CCloudTempFile', 'Cleanup'));
self::$shutdownRegistered = true;
}
}
/**
* @param CCloudStorageBucket $obBucket
* @param string $file_name
* @return string
*/
public static function GetFileName($obBucket, $file_name = '')
{
$dir_name = self::GetAbsoluteRoot();
$file_name = rel2abs("/", "/".$file_name);
$temp_path = "";
$i = 0;
while (true)
{
$i++;
if ($file_name == '/')
{
$dir_add = md5(mt_rand());
}
elseif ($i < 25)
{
$dir_add = mb_substr(md5(mt_rand()), 0, 3);
}
else
{
$dir_add = md5(mt_rand());
}
$temp_path = $dir_name."/".$dir_add.$file_name;
if (!$obBucket->FileExists($temp_path))
{
self::$buckets[$obBucket->ID."|".$temp_path] = array(
"bucket" => $obBucket,
"filePath" => $temp_path,
);
self::RegisterShutdown();
break;
}
}
return $temp_path;
}
/**
* @param CCloudStorageBucket $obBucket
* @param integer $hours_to_keep_files
* @param string $subdir
* @return string
*/
public static function GetDirectoryName($obBucket, $hours_to_keep_files = 0, $subdir = "")
{
if ($hours_to_keep_files <= 0)
{
return self::GetFileName($obBucket,'');
}
$temp_path = ''; //This makes code analyzers happy. $temp_path will never be empty.
if ($subdir === "")
{
$dir_name = self::GetAbsoluteRoot().'/BXTEMP-'.date('Y-m-d/H/', time() + 3600 * $hours_to_keep_files);
$i = 0;
while (true)
{
$i++;
$dir_add = md5(mt_rand());
$temp_path = $dir_name.$dir_add."/";
if (!$obBucket->FileExists($temp_path))
{
break;
}
}
}
else //Fixed name during the session
{
$subdir = implode("/", (is_array($subdir) ? $subdir : array($subdir, bitrix_sessid())))."/";
while (mb_strpos($subdir, "//") !== false)
{
$subdir = str_replace("//", "/", $subdir);
}
$bFound = false;
for ($i = $hours_to_keep_files; $i > 0; $i--)
{
$dir_name = self::GetAbsoluteRoot().'/BXTEMP-'.date('Y-m-d/H/', time() + 3600 * $i);
$temp_path = $dir_name.$subdir;
$list = $obBucket->ListFiles($temp_path, true);
if ($list['file'] || $list['dir'])
{
$bFound = true;
break;
}
}
if (!$bFound)
{
$dir_name = self::GetAbsoluteRoot().'/BXTEMP-'.date('Y-m-d/H/', time() + 3600 * $hours_to_keep_files);
$temp_path = $dir_name.$subdir;
}
}
if (!isset(self::$buckets[$obBucket->ID]))
{
self::$buckets[$obBucket->ID] = array(
"bucket" => $obBucket,
"filePath" => null
);
}
self::RegisterShutdown();
return $temp_path;
}
protected static $my_pid = '';
/**
* @param bool $lock
* @return bool
*/
protected static function cleanupFilesLock($lock = true)
{
if (!self::$my_pid)
{
self::$my_pid = md5(mt_rand());
}
$obCacheLock = null;
$cache_ttl = 300;
$uniq_str = 'cleanupFiles';
$init_dir = 'clouds';
$obCacheLock = new CPHPCache();
if ($lock)
{
if ($obCacheLock->InitCache($cache_ttl, $uniq_str, $init_dir))
{
$vars = $obCacheLock->GetVars();
if (self::$my_pid !== $vars['pid'])
{
return false; //There is other cleaning process
}
}
elseif ($obCacheLock->StartDataCache())
{
$obCacheLock->EndDataCache(array('pid' => self::$my_pid));
}
}
else
{
$obCacheLock->Clean($uniq_str, $init_dir);
}
return true;
}
/**
* @param CCloudStorageBucket $obBucket
* @param string $dir_name
* @param array $files
* @return string
*/
protected static function cleanupFiles($obBucket, $dir_name, $files)
{
$date = new \Bitrix\Main\Type\DateTime();
$date->setTimeZone(new DateTimeZone("UTC"));
$date->add("-1D");
$tmp_expiration_time = $date->format('Y-m-d')."T".$date->format('H:i:s');
$now = date('Y-m-d/H/', time());
foreach ($files['file'] as $i => $filePath)
{
//Files cleanup
if (preg_match("#^BXTEMP-(....-..-../../)#", $filePath, $match) && $match[1] < $now)
{
if (!static::cleanupFilesLock())
{
return false;
}
$obBucket->DeleteFile($dir_name.$filePath);
}
elseif ($files["file_mtime"][$i] < $tmp_expiration_time)
{
if (!static::cleanupFilesLock())
{
return false;
}
$obBucket->DeleteFile($dir_name.$filePath);
}
}
if (static::cleanupFilesLock())
{
static::cleanupFilesLock(false);
}
return true;
}
//PHP shutdown cleanup
public static function Cleanup()
{
foreach (self::$buckets as $bucket)
{
/* @var CCloudStorageBucket $obBucket */
$obBucket = $bucket['bucket'];
if (!is_null($bucket['filePath']) && $obBucket->FileExists($bucket['filePath']))
{
$obBucket->DeleteFile($bucket['filePath']);
}
elseif (static::cleanupFilesLock())
{
$dir_name = self::GetAbsoluteRoot()."/";
$list = $obBucket->ListFiles($dir_name, true);
if ($list)
{
static::cleanupFiles($obBucket, $dir_name, $list);
}
static::cleanupFilesLock(false);
}
}
}
}