techmaddy.com

	<?php

		/*
		*		Copyright 2010 - Kumarasamy
		*		kumarasamy@techmaddy.com
		*/

		class DocumentHandler {

			var $uploadDir;// Directory where the documents to be uploaded

			function prepateForUpload() {
				$this->uploadDir = '/var/www/uploads';
				$this->uploadDir = $this->uploadDir . "/" . date("Y_m");

				//Check the month folder is available, if not then create it.
				if(!is_dir($this->uploadDir))
					mkdir($this->uploadDir);

			} //End of setDetails

			function copyFile($_FILES,$fileCntrlName) {
				$resultArray = array();
				$uploadfile = $this->uploadDir . "/" . basename($_FILES[$fileCntrlName]['name']);

				//If the file exists already in the folder, append the millisecond in the file name.
				if(is_file($uploadfile)) {
					list($msec, $sec) = explode(".", microtime(true));
					$uploadfile = $this->uploadDir . "/" . $msec . $sec . basename($_FILES[$fileCntrlName]['name']);
				}

				if (move_uploaded_file($_FILES[$fileCntrlName]['tmp_name'], $uploadfile)) {
					$resultArray['error'] = '';
					$resultArray['displayMessage'] = 'File Uploaded Successfully!!!';
				}

				return $resultArray;
			} //End of copyFile

		} //End of DocumentHandler
	?>
	

• Check for the file type
• Check for the file Size
• Scan the document using the shell commands
• Check for the special chars in the file name
• File name length check also can be added

• Using Logging Framework - Log4J, SL4J, Java Logging API and Apache Commons Logging. These logging framework provides lots of functionality built-in. These frameworks defines three different processors for logging. They are Loggers, Formaters and Appenders. And these frameworks provides many levels for logging also. These frameworks provides many means of organizing your logs like Storing into Files, Database tables and some times these framework will help us in sending the email alerts also. There are many open source loggers can be found here.
• Custom Developed Loggers - This mayn’t be complete logging solution. Sometimes we may need to code our own way of logging, this depends on our requirement to log. For example We may wanted to just to record only the user actions in all of the screens in an application and the admin needs the screen to see all the action done by that particular user with some more criteria like date etc… This time instead me adding one more framework and cluttering the application configuration, we can simply make use of the existing JDBC connection and store all the actions on the same database where we do store our application data. The other scenario i can think off here is, say for example i’m planning to log many details from each and every request of the user, in this case logging becomes heavier to maintain for the containers, this time we can try use our own loggers with pooling of objects on the user basis.