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  Classes of James Moore  >  pgp_enc.Class  >  pgp_enc.class  >  Download  
File: pgp_enc.class
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Content type: text/plain
Description: The Class File
Class: pgp_enc.Class
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Date: 14 years ago
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<?php
/***************************************
** Title.........: PGP Encrypted Mail Class
** Version.......: 1.0
** Author........: James Moore <james@phpuk.org>
** Filename......: pgp_enc.class
** Last changed..: 17/04/2000
** Notes.........: Based upon html_mime_mail.class
**                 by Richard Heyes <richard.heyes@heyes-computing.net>
**                 and Tobias Ratschiller <tobias@dnet.it>
**                 and Sascha Schumann <sascha@schumann.cx>.
**
***************************************/

class pgp_encrypted_mail{

	var $headers;
        var $body;
        var $encbody;
	var $multipart;
        var $mime;
        var $html;
        var $html_text;
        var $html_images = array();
        var $cids = array();
        var $do_html;
        var $parts = array();
	var $keyname = array();
	var $built = FALSE;
	var $pathtopgp = "/usr/local/bin/";
	var $pp;
	var $fp;
	var $pcmd;
	var $encryptcommand = "pgpe +batchmode";
	var $signcommand = "pgps +batchmode ";
	var $pgppath = "/home/usr/www/.pgp";
	var $pgppass;

/***************************************
** Constructor function. Sets the headers
** if supplied.
***************************************/
        function pgp_encrypted_mail($headers = ''){
                $this->headers = $headers;
		putenv("PGPPATH=$this->pgppath");
        }

/***************************************
** 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(!is_array($this->html_images)){
                        $this->multipart.= '--'.$orig_boundary."\n";
                        $this->multipart.= 'Content-Type: multipart/alternative; boundary = "'.$sec_boundary."\"\n\n\n";

                        $this->multipart.= '--'.$sec_boundary."\n";
                        $this->multipart.= 'Content-Type: text/plain'."\n";
                        $this->multipart.= 'Content-Transfer-Encoding: 7bit'."\n\n";
                        $this->multipart.= $this->html_text."\n\n";

                        $this->multipart.= '--'.$sec_boundary."\n";
                        $this->multipart.= 'Content-Type: text/html'."\n";
                        $this->multipart.= 'Content-Transfer-Encoding: 7bit'."\n\n";
                        $this->multipart.= $this->html."\n\n";
                        $this->multipart.= '--'.$sec_boundary."--\n\n";
                }else{
                        $this->multipart.= '--'.$orig_boundary."\n";
                        $this->multipart.= 'Content-Type: multipart/related; boundary = "'.$sec_boundary."\"\n\n\n";

                        $this->multipart.= '--'.$sec_boundary."\n";
                        $this->multipart.= 'Content-Type: multipart/alternative; boundary = "'.$thr_boundary."\"\n\n\n";

                        $this->multipart.= '--'.$thr_boundary."\n";
                        $this->multipart.= 'Content-Type: text/plain'."\n";
                        $this->multipart.= 'Content-Transfer-Encoding: 7bit'."\n\n";
                        $this->multipart.= $this->html_text."\n\n";

                        $this->multipart.= '--'.$thr_boundary."\n";
                        $this->multipart.= 'Content-Type: text/html'."\n";
                        $this->multipart.= 'Content-Transfer-Encoding: 7bit'."\n\n";
                        $this->multipart.= $this->html."\n\n";
                        $this->multipart.= '--'.$thr_boundary."--\n\n";

                        for($i=0; $i<count($this->html_images); $i++){
                                $this->multipart.= '--'.$sec_boundary."\n";
                                $this->build_html_image($i);
                        }

                        $this->multipart.= "--".$sec_boundary."--\n\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']."\"\n";
                else $this->multipart .= "\n";

                $this->multipart.= 'Content-ID: <'.$this->html_images[$i]['cid'].">\n";
                $this->multipart.= 'Content-Transfer-Encoding: base64'."\n\n";
                $this->multipart.= chunk_split(base64_encode($this->html_images[$i]['body']))."\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']."\"\n";
                else
                        $message_part .= "\n";

                // Determine content encoding.
                if($this->parts[$i]['c_type'] == 'text/plain'){
                        $message_part.= 'Content-Transfer-Encoding: 7bit'."\n\n";
                        $message_part.= $this->parts[$i]['body']."\n";
                }else{
                        $message_part.= 'Content-Transfer-Encoding: base64'."\n";
                        $message_part.= 'Content-Disposition: attachment; filename = "'.$this->parts[$i]['name']."\"\n\n";
                        $message_part.= chunk_split(base64_encode($this->parts[$i]['body']))."\n";
                }

                return $message_part;
        }
/***************************************
** Builds the multipart message from the
** list ($this->parts).
***************************************/
        function build_message(){
                $boundary = '=_'.md5(uniqid(time()));

                $this->multipart = '';
                $this->multipart.= "MIME-Version: 1.0\n";
                $this->multipart.= "Content-Type: multipart/mixed; boundary = \"".$boundary."\"\n\n";
                $this->multipart.= "This is a MIME encoded message.\nCreated by html_mime_mail.class.\nSee http://www.heyes-computing.net/red.software/ for a copy.\n\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."\n".$this->build_part($i);
                }

                $this->mime = $this->multipart."--".$boundary."--\n";
		$this->built = TRUE;
	}

/***************************************
** Adds a Public Key to encrypt with
** This MUST be on your public keyring
***************************************/
	function add_key($keyname) {

		$this->keyname[] = array($keyname);

	}
/***************************************
** Encrypts and Attachment useing the
** keys in ($this->keyname)
***************************************/

	function add_encrypted_attachment($file, $name = '', $c_type='application/pgp-encrypted') {

		if(sizeof($this->keyname) == 0) Echo "WARNING: No Keys Specified";
		
		$this->pcmd = $this->pathtopgp.$this->encryptcommand;

		for($i=count($this->keyname)-1; $i>=0; $i--) {
			$this->pcmd.= " -r'". $this->keyname[$i][0] ."' ";
		}

		$attchid = md5(uniqid(time()));
		$this->pcmd.= " -o".$attchid;
		
		echo $this->pcmd;
		$pp = popen($this->pcmd, w);
		fwrite($pp, $file);
		pclose($pp);

		$fp = fopen($attchid, 'r');
		$encattach = fread($fp, filesize($attchid));
		fclose($fp);

		unlink($attchid);

		if(!stristr($name,".asc")) $name.= ".asc";
		$this->add_attachment($encattach, $name, $c_type);
		
		}

/***************************************
** Encrypts the Message from the body
** ($this->mime)
***************************************/
	
	function encrypt_body() {

                $boundary = md5(uniqid(time()));

                
		if(sizeof($this->keyname) == 0) Echo "WARNING: No Keys Specified";

		$this->pcmd = $this->pathtopgp.$this->encryptcommand;

		for($i=count($this->keyname)-1; $i>=0; $i--) {
			$this->pcmd.= " -at -r'". $this->keyname[$i][0] ."' ";
		}


		$this->pcmd.= " -o".$boundary;
		
		echo $this->pcmd;

		$pp = popen($this->pcmd, w);
		fwrite($pp, $this->body);
		pclose($pp);

		$fp = fopen($boundary,r);
		$this->body = fread($fp, filesize($boundary));
		fclose($fp);
		
		unlink($boundary);

	}

/**********************************************
** Signs message and appends it to $this->body
**********************************************/

	function sign($userid,$pgppass) {

                $boundary = md5(uniqid(time()));
		
		putenv("PGPPASS=$pgppass");

		$this->pcmd = $this->pathtopgp.$this->signcommand;
		$this->pcmd.= " -u'". $userid ."' ";
		$this->pcmd.= "-at -o".$boundary;
		
		$pp = popen($this->pcmd, w);
		fwrite($pp, $this->body);
		pclose($pp);

		$fp = fopen($boundary,r);
		$this->body = fread($fp, filesize($boundary));
		fclose($fp);
		
		unlink($boundary);	
	}

/***************************************
** 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."\n";
                $this->headers.= $headers;
                $this->mime = $this->headers.$this->mime;

                mail($to, $subject, '', $this->mime);
        }


} // End of Class