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<?php
/***************************************
** Title.........: HTML Mime Mail class
** Version.......: 1.25
** Author........: Richard Heyes <richard.heyes@heyes-computing.net>
** Filename......: html_mime_mail.class
** Last changed..: 04/06/2000
** Notes.........: Based upon mime_mail.class
**                 by Tobias Ratschiller <tobias@dnet.it>
**                 and Sascha Schumann <sascha@schumann.cx>.
**                  - Thanks to Thomas Flemming for supplying a fix
**                    for Win32.
**                  - Made headers terminated by CRLF instead of LF, now
**                    compliant with RFC822. Thanks to Pao-Hsi Huang.
**                  - Fixed bug; certain mail systems (gmx.net in particular)
**                    were rejecting mail because of a space character either
**                    side of the equal sign on the boundary line. Thanks to
**                    Peter Holm for notifying me.
**                  - Fixed bug; $html_images was tested to be an array or not
**                    but was set to be an array during object creation, so the
**                    test always returned true. Thanks to Bob Silva for
**                    notifying me.
***************************************/
class html_mime_mail{
        var $headers;
        var $body;
        var $multipart;
        var $mime;
        var $html;
        var $html_text;
        var $html_images = array();
        var $cids = array();
        var $do_html;
        var $parts = array();
/***************************************
** Constructor function. Sets the headers
** if supplied.
***************************************/
        function html_mime_mail($headers = \'\'){
                $this->headers = $headers;
        }
/***************************************
** Adds a html part to the mail.
** Also replaces image names with
** content-id\'s.
***************************************/
        function add_html($html, $text){
                $this->do_html = 1;
                $this->html = $html;
                $this->html_text = $text;
                if(is_array($this->html_images) AND count($this->html_images) > 0){
                        for($i=0; $i<count($this->html_images); $i++){
                                $this->html = ereg_replace($this->html_images[$i][\'name\'], \'cid:\'.$this->html_images[$i][\'cid\'], $this->html);
                        }
                }
        }
/***************************************
** Builds html part of email.
***************************************/
        function build_html($orig_boundary){
                $sec_boundary = \'=_\'.md5(uniqid(time()));
                $thr_boundary = \'=_\'.md5(uniqid(time()));
                if(count($this->html_images) == 0){
                        $this->multipart.= \'--\'.$orig_boundary.\"\\r\\n\";
                        $this->multipart.= \'Content-Type: multipart/alternative;\'.chr(13).chr(10).chr(9).\'boundary=\"\'.$sec_boundary.\"\\\"\\r\\n\\r\\n\\r\\n\";
                        $this->multipart.= \'--\'.$sec_boundary.\"\\r\\n\";
                        $this->multipart.= \'Content-Type: text/plain\'.\"\\r\\n\";
                        $this->multipart.= \'Content-Transfer-Encoding: 7bit\'.\"\\r\\n\\r\\n\";
                        $this->multipart.= $this->html_text.\"\\r\\n\\r\\n\";
                        $this->multipart.= \'--\'.$sec_boundary.\"\\r\\n\";
                        $this->multipart.= \'Content-Type: text/html\'.\"\\r\\n\";
                        $this->multipart.= \'Content-Transfer-Encoding: 7bit\'.\"\\r\\n\\r\\n\";
                        $this->multipart.= $this->html.\"\\r\\n\\r\\n\";
                        $this->multipart.= \'--\'.$sec_boundary.\"--\\r\\n\\r\\n\";
                }else{
                        $this->multipart.= \'--\'.$orig_boundary.\"\\r\\n\";
                        $this->multipart.= \'Content-Type: multipart/related;\'.chr(13).chr(10).chr(9).\'boundary=\"\'.$sec_boundary.\"\\\"\\r\\n\\r\\n\\r\\n\";
                        $this->multipart.= \'--\'.$sec_boundary.\"\\r\\n\";
                        $this->multipart.= \'Content-Type: multipart/alternative;\'.chr(13).chr(10).chr(9).\'boundary=\"\'.$thr_boundary.\"\\\"\\r\\n\\r\\n\\r\\n\";
                        $this->multipart.= \'--\'.$thr_boundary.\"\\r\\n\";
                        $this->multipart.= \'Content-Type: text/plain\'.\"\\r\\n\";
                        $this->multipart.= \'Content-Transfer-Encoding: 7bit\'.\"\\r\\n\\r\\n\";
                        $this->multipart.= $this->html_text.\"\\r\\n\\r\\n\";
                        $this->multipart.= \'--\'.$thr_boundary.\"\\r\\n\";
                        $this->multipart.= \'Content-Type: text/html\'.\"\\r\\n\";
                        $this->multipart.= \'Content-Transfer-Encoding: 7bit\'.\"\\r\\n\\r\\n\";
                        $this->multipart.= $this->html.\"\\r\\n\\r\\n\";
                        $this->multipart.= \'--\'.$thr_boundary.\"--\\r\\n\\r\\n\";
                        for($i=0; $i<count($this->html_images); $i++){
                                $this->multipart.= \'--\'.$sec_boundary.\"\\r\\n\";
                                $this->build_html_image($i);
                        }
                        $this->multipart.= \"--\".$sec_boundary.\"--\\r\\n\\r\\n\";
                }
        }
/***************************************
** Adds an image to the list of embedded
** images.
***************************************/
        function add_html_image($file, $name = \'\', $c_type=\'application/octet-stream\'){
                $this->html_images[] = array( \'body\' => $file,
                                              \'name\' => $name,
                                              \'c_type\' => $c_type,
                                              \'cid\' => md5(uniqid(time())) );
        }
/***************************************
** Adds a file to the list of attachments.
***************************************/
        function add_attachment($file, $name = \'\', $c_type=\'application/octet-stream\'){
                $this->parts[] = array( \'body\' => $file,
                                        \'name\' => $name,
                                        \'c_type\' => $c_type );
        }
/***************************************
** Builds an embedded image part of an
** html mail.
***************************************/
        function build_html_image($i){
                $this->multipart.= \'Content-Type: \'.$this->html_images[$i][\'c_type\'];
                if($this->html_images[$i][\'name\'] != \'\') $this->multipart .= \'; name=\"\'.$this->html_images[$i][\'name\'].\"\\\"\\r\\n\";
                else $this->multipart .= \"\\r\\n\";
                $this->multipart.= \'Content-Transfer-Encoding: base64\'.\"\\r\\n\";
                $this->multipart.= \'Content-ID: <\'.$this->html_images[$i][\'cid\'].\">\\r\\n\\r\\n\";
                $this->multipart.= chunk_split(base64_encode($this->html_images[$i][\'body\'])).\"\\r\\n\";
        }
/***************************************
** Builds a single part of a multipart
** message.
***************************************/
        function build_part($i){
                $message_part = \'\';
                $message_part.= \'Content-Type: \'.$this->parts[$i][\'c_type\'];
                if($this->parts[$i][\'name\'] != \'\')
                        $message_part .= \'; name=\"\'.$this->parts[$i][\'name\'].\"\\\"\\r\\n\";
                else
                        $message_part .= \"\\r\\n\";
                // Determine content encoding.
                if($this->parts[$i][\'c_type\'] == \'text/plain\'){
                        $message_part.= \'Content-Transfer-Encoding: 7bit\'.\"\\r\\n\\r\\n\";
                        $message_part.= $this->parts[$i][\'body\'].\"\\r\\n\";
                }else{
                        $message_part.= \'Content-Transfer-Encoding: base64\'.\"\\r\\n\";
                        $message_part.= \'Content-Disposition: attachment; filename=\"\'.$this->parts[$i][\'name\'].\"\\\"\\r\\n\\r\\n\";
                        $message_part.= chunk_split(base64_encode($this->parts[$i][\'body\'])).\"\\r\\n\";
                }
                return $message_part;
        }
/***************************************
** Builds the multipart message from the
** list ($this->parts).
***************************************/
        function build_message(){
                $boundary = \'=_\'.md5(uniqid(time()));
                $this->headers.= \"MIME-Version: 1.0\\r\\n\";
                $this->headers.= \"Content-Type: multipart/mixed;\".chr(13).chr(10).chr(9).\"boundary=\\\"\".$boundary.\"\\\"\\r\\n\";
                $this->multipart = \'\';
                $this->multipart.= \"This is a MIME encoded message.\\r\\nCreated by html_mime_mail.class.\\r\\nSee 
http://www.heyes-computing.net/scripts/ for a copy.\\r\\n\\r\\n\";
                if(isset($this->do_html) AND $this->do_html == 1) $this->build_html($boundary);
                if(isset($this->body) AND $this->body != \'\') $this->parts[] = array(\'body\' => $this->body, \'name\' => \'\', \'c_type\' => \'text/plain\');
                for($i=(count($this->parts)-1); $i>=0; $i--){
                        $this->multipart.= \'--\'.$boundary.\"\\r\\n\".$this->build_part($i);
                }
                $this->mime = $this->multipart.\"--\".$boundary.\"--\\r\\n\";
        }
/***************************************
** Sends the mail.
***************************************/
        function send($to_name, $to_addr, $from_name, $from_addr, $subject = \'\', $headers = \'\'){
                if($to_name != \'\') $to = \'\"\'.$to_name.\'\" <\'.$to_addr.\'>\';
                else $to = $to_addr;
                if($from_name != \'\') $from = \'\"\'.$from_name.\'\" <\'.$from_addr.\'>\';
                else $from = $from_addr;
                $this->headers.= \'From: \'.$from.\"\\r\\n\";
                $this->headers.= $headers;
                mail($to, $subject, $this->mime, $this->headers);
        }
/***************************************
** Use this method to deliver using direct
** smtp connection. Relies upon Manuel Lemos\'
** smtp mail delivery class available at:
** 
http://phpclasses.upperdesign.com**
** void smtp_send( string *Name* of smtp object,
**                 string From address,
**                 array  To addresses,
**                 array  Headers,
**                 string The body)
***************************************/
        function smtp_send($smtp_obj, $from_addr, $to_addr){
                global $$smtp_obj;
                $smtp_obj = $$smtp_obj;
                if(substr($this->headers, -2) == \"\\r\\n\") $this->headers = substr($this->headers,0,-2);
                $this->headers = explode(\"\\r\\n\", $this->headers);
                $smtp_obj->sendmessage($from_addr, $to_addr, $this->headers, $this->mime);
        }
} // End of class.
?>