<?php
/**
 * Project:     ePrints Statistics
 * File:        inc.class.input_check.es.php
 * Description: Gross input checks for POST and GET via this object.
 *              Sql object does it's own checking based on the schema.
 */

class checkit {
	var $_config = array();
	var $_response;
	var $_clean;
	
	function checkit()
	{
	
	}
	function doCheck($value)
	{
		# NJS 2006-12-13
		# PHP 5 appears to not like accessing $this->_config["type"] directly
		# as a method call. We now store it in a local variable first.
		# Tested OK under both PHP 4 and 5.
		$thetype = $this->_config["type"];
		if (method_exists($this, $thetype)) {
			checkit::$thetype($value);
		} else {
			/* Could do something meaningful here. */
		}
	}
	function getResponse()
	{
		return $this->_response;
	}
	function setConfig($config)
	{
		$this->_config = $config;
	}
	function cookie($value)
	{
		if (strlen($value)>$this->_config["maxlength"]) {
			$this->_response = $this->_config["action"];
		}
	}
	function string($value)
	{
		/* 
			More restrictive here than freetext
			Use could be for the form actions. If they don't match
			a certain type we have to reset the request otherwise we
			don't know what will happen.
		*/
		if (strlen($value)>$this->_config["maxlength"]) {
			$this->_response = $this->_config["action"];
		}
		if (isset($this->_config["pattern"])) {
			$pattern = $this->_config["pattern"];
			if ( preg_match($pattern, $value) ) {
				$this->_response = $this->_config["action"];
			}
		}
		if (isset($this->_config["values"])) {
			if (!in_array($value, $this->_config["values"])) { 
				$this->_response = $this->_config["action"];
			} 
		}
		return;
	}
	function integer($value)
	{
		/*
			Check that value is numeric and does not exceed maxlength.
		*/
		if (!is_numeric($value)) {
			$this->_response = $this->_config["action"];
		}
		$test = (int) $value;
		if ($test > $this->_config["maxlength"]) { 
			$this->_response = $this->_config["action"];
		}
	}
	function ignore($value)
	{
		return;
	}
	function freetext($value)
	{
		if (strlen($value)>$this->_config["maxlength"]) {
			return 1;
		}
		if (isset($this->_config["pattern"])) {
			$pattern = $this->_config["pattern"];
			$replacement = $this->_config["replacement"];
			$this->_clean = preg_replace($pattern, $replacement, $value);
			return 2;
		}
	}
}

?>