<?php
/**************************************************/
/*
Released by AwesomePHP.com, under the GPL License, a
copy of it should be attached to the zip file, or
you can view it on http://AwesomePHP.com/gpl.txt
*/
/**************************************************/

/*
Form Process Class - This class will process any html forms.
User should provide list of required inputs, any emails for the
forum to be sent to and file storage place
*/

class processForum {
	/* Variables */
	private $mailTo;
	private $emailFiles;
	private $fileStorage;
	private $allowedExt;
	private $maxSize;
	private $reqFields;
	private $postList;
	private $errorList;
	private $fileList;
	private $fileTypes;
	private $siteEmail;
	private $siteName;
	
	/*
	Function mail to
	*/
	function sendMail($doEmail)
	{
		$list = preg_split('/[ |:|;|,]/',$doEmail);
		foreach($list as $curEmail){ $this->mailTo[] = $curEmail;}
	}
	
	/*
	Function mail files?
	*/
	function mailFiles($option = true){ $this->emailFiles=$option;}
	
	/*
	Function set storage location
	*/
	function setStorage($fLocation){ $this->fileStorage = $fLocation;}
	
	/*
	Function to set site name/email
	*/
	function setSettings($name,$email){ $this->siteName = $name; $this->siteEmail = $email;}
	/*
	Function set extensions
	*/
	function allowedExtensions($doExtensions)
	{ 
		$list = preg_split('/[ |:|;|,]/',$doExtensions);
		foreach($list as $curExt){ $this->allowedExt[] = $curExt;}
	}
	
	/*
	Function set max file size
	*/
	function maxSize($option){ $this->maxSize=$option;}
	
	/*
	Load required fields
	*/
	function requireField($fList,$POST){
		foreach($fList as $curItem){
			list($curReq,$template) = $curItem;
			
			if($POST[$curReq] == NULL){ return 'Field '.$curReq.' is required.<br />';}
			if($template == 'username' 
				&& !preg_match('/^([a-zA-Z0-9._])+$/',$POST[$curReq])){ return 'Field '.$curReq.' is invalid.<br />';}
			if($template == 'email' 
				&& !preg_match('/^[.\w-]+@([\w-]+\.)+[a-zA-Z]{2,6}$/',$POST[$curReq])){ return 'Field '.$curReq.' is invalid.<br />';}
		}
		return NULL;
	}
	
	/*
	Process forum
	*/
	function processForm($POST)
	{
		foreach($POST as $item => $value){
			$this->postList .= "$item -> $value<br />";
		}
	}
	
	/*
	Upload files
	*/
	function uploadFiles($FILES)
	{	
		foreach($FILES as $thisFile){
			if($thisFile['name'] != NULL){
				$extension = $this->getExtension($thisFile['name']);
				$name = $thisFile['name'];
				if(!in_array($extension,$this->allowedExt)){ 
					$errorList[] =  '['.$name.'] Extension '.$extension.' not allowed.<br />';
					} else {
						if($thisFile['size'] > $this->maxSize){ 
						$errorList[] = '['.$name.'] Filesize is over '.$this->maxSize.' bytes.<br />';
					} else {
						$this->processFile($thisFile,$this->fileStorage);
					}
				}
			}
		}
		/*
		Mail the form, and any files if any.
		*/
		$this->mailForm();
		
		return $errorList;
	}
	
	/*
	Function to mail the form and files - private
	We mail the form first, then each file by itself
	*/
	private function mailForm(){
		$mailHeaders = "Return-Path: ".$this->siteName." <".$this->siteEmail.">\r\n"; 
		$mailHeaders .= "From: ".$this->siteName." <".$this->siteEmail.">\r\n";
		$mailHeaders .= "Content-Type: text/html; charset=utf-8;\n\n\r\n"; 
						
		if($this->emailFiles == true && count($this->fileList) > 0){
			foreach($this->fileList as $sub => $curFile){
				$fileatt_type = $this->fileTypes[$sub];
				$file = fopen($this->fileStorage.$curFile,'rb');
				while($dat = fread($file,1025657)){
					$attachment_data .= $dat;
				}
				fclose($file);
				$attachment_data = chunk_split(base64_encode($attachment_data));
				$semi_rand = md5(time());
				$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x"; 			
				$fileHeaders = "From: ".$this->siteName." <".$this->siteEmail.">";
				
				$fileHeaders .= "\nMIME-Version: 1.0\n" .
					"Content-Type: multipart/mixed;\n" .
					" boundary=\"{$mime_boundary}\"";						
				
				$mailMessage = "This is a multi-part message in MIME format.\n\n" .
					"--{$mime_boundary}\n" .
					"Content-Type: text/html; charset=\"utf-8\"\n" .
					"Content-Transfer-Encoding: 7bit\n\n" .
				$this->postList . "\n\n";
			   			
				  // Add file attachment to the message
				 $mailMessage .= "--{$mime_boundary}\n" .
		             "Content-Type: {$fileatt_type};\n" .
		             " name=\"{$curFile}\"\n" .
		             "Content-Disposition: attachment;\n" .
		             " filename=\"{$curFile}\"\n" .
		             "Content-Transfer-Encoding: base64\n\n" .
	             $attachment_data . "\n\n" .
		             "--{$mime_boundary}--\n"; 
				
				unset($attachment_data);
				foreach($this->mailTo as $curEmail){
					mail($curEmail,'Form Email File',$mailMessage,$fileHeaders);
				}
			}
		} else {
			foreach($this->mailTo as $curEmail){
				mail($curEmail,'Form Email',$this->postList,$mailHeaders);
			}
		}
	}
	/*
	Actual file upload - private
	*/
	private function processFile($FILE,$dir)
	{
		if($FILE['name'] != NULL){	
			if(is_file($dir.$FILE['name'])){
				$FILE['name'] = $this->generate(5).'_'.$FILE['name'];
			}
			$this->fileList[] = $FILE['name'];
			$this->fileTypes[] = $FILE['type'];
			move_uploaded_file($FILE['tmp_name'],$dir.$FILE['name']);		
		}
		return;
	}
	
	/*
	Generate random string - private
	*/
	private function generate($strlen)
	{
		return substr(md5(uniqid(rand(),1)),1,$strlen);
	}
	
	/*
	Get file extension (even those containing periods) - private
	*/
	private function getExtension($name)
	{
		return strtolower(end(explode('.',$name)));
	}
}

?>