fileUpload.php

<?php

	header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
	header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
	header("Cache-Control: no-store, no-cache, must-revalidate");
	header("Cache-Control: post-check=0, pre-check=0", false);
	header("Pragma: no-cache");

	$targetDir = 'uploads';
	$cleanupTargetDir = true; 
	$maxFileAge = 44000;

	if (!file_exists($targetDir)) {
		@mkdir($targetDir);
	}


	if (isset($_REQUEST["name"])) {
		$fileName = $_REQUEST["name"];
	} elseif (!empty($_FILES)) {
		$fileName = $_FILES["file"]["name"];
	} else {
		$fileName = uniqid("file_");
	}

	$filePath = $targetDir . DIRECTORY_SEPARATOR . $fileName;

	
	$chunk = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0;
	$chunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 0;


	if ($cleanupTargetDir) {
		if (!is_dir($targetDir) || !$dir = opendir($targetDir)) {
			die('{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "Failed to open temp directory."}, "id" : "id"}');
		}

		while (($file = readdir($dir)) !== false) {
			$tmpfilePath = $targetDir . DIRECTORY_SEPARATOR . $file;

			if ($tmpfilePath == "{$filePath}.part") {
				continue;
			}

			if (preg_match('/\.part$/', $file) && (filemtime($tmpfilePath) < time() - $maxFileAge)) {
				@unlink($tmpfilePath);
			}
		}
		closedir($dir);
	}	


	if (!$out = @fopen("{$filePath}.part", $chunks ? "ab" : "wb")) {
		die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}');
	}

	if (!empty($_FILES)) {
		if ($_FILES["file"]["error"] || !is_uploaded_file($_FILES["file"]["tmp_name"])) {
			die('{"jsonrpc" : "2.0", "error" : {"code": 103, "message": "Failed to move uploaded file."}, "id" : "id"}');
		}

		if (!$in = @fopen($_FILES["file"]["tmp_name"], "rb")) {
			die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}');
		}
	} else {	
		if (!$in = @fopen("php://input", "rb")) {
			die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}');
		}
	}

	while ($buff = fread($in, 10240000)) {
		fwrite($out, $buff);
	}

	@fclose($out);
	@fclose($in);

	if (!$chunks || $chunk == $chunks - 1) {
		rename("{$filePath}.part", $filePath);
	}

	die('{"jsonrpc" : "2.0", "result" : null, "id" : "id"}');

?>