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<?php
/*
Attachment Mailer class - version 1.01
PHP class handles multiple attachment e-mails using the mime mail standard

Copyright (c) 2006, Olaf Lederer
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
    * Neither the name of the finalwebsites.com nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

______________________________________________________________________
available at http://www.finalwebsites.com 
Comments & suggestions: http://www.finalwebsites.com/contact.php

Updates / bugfixes

Ver. 1.01 – The new example demonstrates how to use this class together with some php upload functionality. This example form / script needs an object of the Easy Upload class available on finalwebsites.com.
*/

define("LIBR", "\r\n"); // use a "\n" if you have problems

class Mailer {
	
	var $from_name;
	var $from_mail;
	var $mail_to;
	var $mail_cc;
	var $mail_bcc;
	
	var $mail_headers;
	var $mail_subject;
	var $mail_body = "";
	
	var $valid_mail_adresses; // boolean is true if all mail(to) adresses are valid
	var $uid; // the unique value for the mail boundry
	var $mail_priority = 3; // 3 = normal, 2 = high, 4 = low
    var $encoding='utf-8';
    var $mime_type = "text/html";
	
	var $att_files = array();
	var $msg = array();
    var $add_html = true;
	
	// functions inside this constructor
	// - validation of e-mail adresses
	// - setting mail variables
	// - setting boolean $valid_mail_adresses
	function Mailer(){}
    
    function setMailer($from_name = "", $from, $to, $subject = "", $body = "",$encoding="utf-8", $mime_type="text/html") {
		$this->valid_mail_adresses = true;
        
		if (!($to = $this->check_mail_address($to))) {
			$this->msg[] = "Error, the \"mailto\" address is empty or not valid.";
			$this->valid_mail_adresses = false;
		} 
        
		if (!($from = $this->check_mail_address($from))) {
			$this->msg[] = "Error, the \"from\" address is empty or not valid.";
			$this->valid_mail_adresses = false;
		} 

        
        if ($this->valid_mail_adresses) {
            $this->encoding=$encoding;
            $this->mime_type=$mime_type;
			$this->from_name = $this->strip_line_breaks($from_name);
			$this->from_mail = $this->strip_line_breaks($from);            
			$this->mail_to = $this->strip_line_breaks($to);
			$this->mail_subject = "=?".$this->encoding."?B?" . base64_encode($this->strip_line_breaks($subject)) . "?=";
			$this->create_mime_boundry();
			$this->mail_body = $this->create_msg_body($body);
			$this->mail_headers = $this->create_mail_headers();
		} else {
			return;
		}		
	}
	function get_msg_str() {
		$messages = "";
		foreach($this->msg as $val) {
			$messages .= $val."<br>\n";
		}
		return $messages;			
	}
	// use this to prent formmail spamming
	function strip_line_breaks($val) {
		$val = preg_replace("/([\r\n])/", "", $val);
		return $val;
	}
	function check_mail_address($mail_address_list,$check=false) {        
        
		$pattern = "/^[\w-]+(\.[\w-]+)*@([0-9a-z][0-9a-z-]*[0-9a-z]\.)+([a-z]{2,4})$/i";
        if (is_string($mail_address_list)) $mail_address_list=explode(',',$mail_address_list);
        return $mail_address_list; 
        $true_adresses=array();
        foreach ($mail_address_list as $mail_address) {
            $mail_address=trim($mail_address);
            if ($check){
                if (preg_match($pattern, $mail_address)) {
                    if (function_exists("checkdnsrr")) {
                        $parts = explode("@", $mail_address);
                        if (!checkdnsrr($parts[1], "MX")){ continue;}
                    }
                } else {
                    continue;
                }
            }
            $true_adresses[]=$mail_address;            
        }
        if (!$true_adresses) return false;
        return implode(',',$true_adresses);

        
	}
	function create_mime_boundry() {
		$this->uid = "_".md5(uniqid(time()));
	}
	function get_file_data($filepath) {
		if (file_exists($filepath)) {
			if (!$str = file_get_contents($filepath)) {
				$this->msg[] = "Error while opening attachment \"".basename($filepath)."\"";
			} else {
				return $str;
			}
		} else {
			$this->msg[] = "Error, the file \"".basename($filepath)."\" does not exist.";
			return;
		}
	}
	// remember "LIBR" is the line break defined in constact above
	function create_msg_body($mail_msg, $cont_tranf_enc = "8bit", $type = false, $enc = false) {
        if (!$enc) $enc = $this->encoding;
        if (!$type) $type=$this->mime_type;
		$str = "--".$this->uid.LIBR;
		$str .= "Content-type:".$type."; charset=".$enc.LIBR;
		$str .= "Content-Transfer-Encoding: ".$cont_tranf_enc.LIBR.LIBR;
        
        if ($this->add_html && $this->mime_type == 'text/html'){
            $mail_msg = "<html><head><meta content=\"text/html; charset=".$this->encoding."\" http-equiv=\"Content-Type\"><base href=\"http://".$_SERVER['HTTP_HOST']."/\" /></head><body>".trim($mail_msg)."</body></html>";
        }
		$str .= trim($mail_msg).LIBR.LIBR;
		return $str;
	}
	function create_mail_headers() {
        
        if (is_array($this->from_mail)){
            $frommails = implode(',',$this->from_mail);
        } elseif(is_string($this->from_mail)){
            $frommails = $this->from_mail;
        }
       
		if ($this->from_name != "") {
			$headers = "From: =?".$this->encoding."?B?".base64_encode($this->from_name)."?= <".$frommails.">".LIBR;
			$headers .= "Reply-To: =?".$this->encoding."?B?".base64_encode($this->from_name)."?= <".$frommails.">".LIBR;
		} else {
            $headers = "From: =?".$this->encoding."?B?".base64_encode($this->$frommails)."?= ".LIBR;			
			$headers .= "Reply-To: ".$frommails.LIBR;
		}
		if ($this->mail_cc != "") $headers .= "Cc: ".$this->mail_cc.LIBR;
		if ($this->mail_bcc != "") $headers .= "Bcc: ".$this->mail_bcc.LIBR;
		$headers .= "MIME-Version: 1.0".LIBR;
		$headers .= "X-Mailer: Attachment Mailer ver. 1.0".LIBR;
		$headers .= "X-Priority: ".$this->mail_priority.LIBR;
		$headers .= "Content-Type: multipart/mixed;".LIBR.chr(9)." boundary=\"".$this->uid."\"".LIBR.LIBR;
		$headers .= "This is a multi-part message in MIME format.".LIBR.LIBR;
		return $headers;
	}
	// use for $dispo "attachment" or "inline" (f.e. example images inside a html mail
	function attach($file, $dispo = "attachment", $filename = false) {
		
        if (!$this->valid_mail_adresses) return;
		$file_str = $this->get_file_data($file);
		if ($file_str == "") {
			return;
		} else {
            if(empty($filename)){
                $filename = basename($file);
            }
            //$file_type = mime_content_type($file);
			$file_type = $this->returnMIMEType($filename);
			$chunks = chunk_split(base64_encode($file_str));
			$mail_part = "--".$this->uid.LIBR;
			$mail_part .= "Content-type:".$file_type.";".LIBR.chr(9)." name=\"".$filename."\"".LIBR;
			$mail_part .= "Content-Transfer-Encoding: base64".LIBR;
			$mail_part .= "Content-Disposition: ".$dispo.";".chr(9)."filename=\"".$filename."\"".LIBR.LIBR;
			$mail_part .= $chunks;
			$mail_part .= LIBR.LIBR;
			$this->att_files[] = $mail_part;
		}
        			
	}
	function send() {        
        
		if (!$this->valid_mail_adresses) return;
       //die(print_r($frommails));

		$mail_message = $this->mail_body;
		if (count($this->att_files) > 0) {
			foreach ($this->att_files as $val) {
				$mail_message .= $val;
			}
			$mail_message .= "--".$this->uid."--";
		}
        if (is_array($this->mail_to)){
            $mails=$this->mail_to;
        } elseif (is_string($this->mail_to)){
            $mails = explode(',',$this->mail_to);    
        }
        
        
        $i=0;
        foreach ($mails as $mail_to) {
            //die(trim($mail_to) ." >> ".$this->mail_subject." >> ".$mail_message ." >> ". $this->mail_headers."<br />");
            if (@mail(trim($mail_to), $this->mail_subject, $mail_message, $this->mail_headers)) {
                $i++;
            }
                
        }
        return $i;
	}
    
    function returnMIMEType($filename)
    {
        preg_match("|\.([a-z0-9]{2,4})$|i", $filename, $fileSuffix);

        switch(strtolower($fileSuffix[1]))
        {
            case "js" :
                return "application/x-javascript";

            case "json" :
                return "application/json";

            case "jpg" :
            case "jpeg" :
            case "jpe" :
                return "image/jpg";

            case "png" :
            case "gif" :
            case "bmp" :
            case "tiff" :
                return "image/".strtolower($fileSuffix[1]);

            case "css" :
                return "text/css";

            case "xml" :
                return "application/xml";

            case "doc" :
            case "docx" :
                return "application/msword";

            case "xls" :
            case "xlt" :
            case "xlm" :
            case "xld" :
            case "xla" :
            case "xlc" :
            case "xlw" :
            case "xll" :
                return "application/vnd.ms-excel";

            case "ppt" :
            case "pps" :
                return "application/vnd.ms-powerpoint";

            case "rtf" :
                return "application/rtf";

            case "pdf" :
                return "application/pdf";

            case "html" :
            case "htm" :
            case "php" :
                return "text/html";

            case "txt" :
                return "text/plain";

            case "mpeg" :
            case "mpg" :
            case "mpe" :
                return "video/mpeg";

            case "mp3" :
                return "audio/mpeg3";

            case "wav" :
                return "audio/wav";

            case "aiff" :
            case "aif" :
                return "audio/aiff";

            case "avi" :
                return "video/msvideo";

            case "wmv" :
                return "video/x-ms-wmv";

            case "mov" :
                return "video/quicktime";

            case "zip" :
                return "application/zip";

            case "tar" :
                return "application/x-tar";

            case "swf" :
                return "application/x-shockwave-flash";

            default :
            if(function_exists("mime_content_type"))
            {
                $fileSuffix = mime_content_type($filename);
            }

            return "unknown/" . trim($fileSuffix[0], ".");
        }
    }
}
	
?>