[squirrelmail.git] / class / deliver / Deliver.class.php

<?php

/**
 * Deliver.class.php
 *
 * Copyright (c) 1999-2002 The SquirrelMail Project Team
 * Licensed under the GNU GPL. For full terms see the file COPYING.
 *
 * This contains all the functions needed to send messages through
 * a delivery backend.
 *
 * $Id$
 */

class Deliver {

    function mail($message, $stream=false) {
       $rfc822_header = $message->rfc822_header;
       if (count($message->entities)) {
          $boundary = $this->mimeBoundary();
	  $rfc822_header->content_type->properties['boundary']='"'.$boundary.'"';
       } else {
          $boundary='';
       }
       $raw_length = 0;
       $reply_rfc822_header = (isset($message->reply_rfc822_header) 
        	             ? $message->reply_rfc822_header : '');
       $header = $this->prepareRFC822_Header($rfc822_header, $reply_rfc822_header, $raw_length);

       if ($stream) {
            $this->preWriteToStream($header);
            $this->writeToStream($stream, $header);
       }
       $this->writeBody($message, $stream, $raw_length, $boundary);
       return $raw_length;
    }
    
    function writeBody($message, $stream, &$length_raw, $boundary='') {
        if ($boundary && !$message->rfc822_header) {
	    $s = '--'.$boundary."\r\n";
	    $s .= $this->prepareMIME_Header($message, $boundary);
	    $length_raw += strlen($s);
	    if ($stream) {
                $this->preWriteToStream($s);
		$this->writeToStream($stream, $s);
	    }
        }
	$this->writeBodyPart($message, $stream, $length_raw);
	$boundary_depth = substr_count($message->entity_id,'.');
	if ($boundary_depth) {
	   $boundary .= '_part'.$boundary_depth;
	}
	$last = false;
	for ($i=0, $entCount=count($message->entities);$i<$entCount;$i++) {
    	    $msg = $this->writeBody($message->entities[$i], $stream, $length_raw, $boundary);
	    if ($i == $entCount-1) $last = true;
	}
        if ($boundary && $last) {
	    $s = "--".$boundary."--\r\n\r\n";
	    $length_raw += strlen($s);
	    if ($stream) {
                $this->preWriteToStream($s);
		$this->writeToStream($stream, $s);
	    }
	}
    }

    function writeBodyPart($message, $stream, &$length) {
        if ($message->mime_header) {
	   $type0 = $message->mime_header->type0;
	} else {
	   $type0 = $message->rfc822_header->content_type->type0;
	}
	
	$body_part_trailing = $last = '';
	switch ($type0) {
	case 'text':
	case 'message':
	    if ($message->body_part) {
	       $body_part = $message->body_part;
	       $length += $this->clean_crlf($body_part);
	       if ($stream) {
                  $this->preWriteToStream($body_part);     
	          $this->writeToStream($stream, $body_part);
	       }
	       $last = $body_part;
	    } elseif ($message->att_local_name) {
	        $filename = $message->att_local_name;
		$file = fopen ($filename, 'rb');
		while ($body_part = fgets($file, 4096)) {
		   $length += $this->clean_crlf($body_part);
		   if ($stream) {
		      $this->preWriteToStream($body_part);
		      $this->writeToStream($stream, $body_part);
                   }
		   $last = $body_part;
		}
		fclose($file);
            }
	    break;
	default:
	    if ($message->body_part) {
	       $body_part = $message->body_part;
	       $length += $this->clean_crlf($body_part);
	       if ($stream) {
	          $this->writeToStream($stream, $body_part);
    	       }
	    } elseif ($message->att_local_name) {
	        $filename = $message->att_local_name;
		$file = fopen ($filename, 'rb');
		$encoded = '';
		while ($tmp = fread($file, 570)) {
		   $body_part = chunk_split(base64_encode($tmp));
		   $length += $this->clean_crlf($body_part);
		   if ($stream) {
		      $this->writeToStream($stream, $body_part);
		   }
		}
		fclose($file);
	    }
	    break;
	}
	$body_part_trailing = '';
	if ($last && substr($last,-1) != "\n") {
	   $body_part_trailing = "\r\n";
	}
	if ($body_part_trailing) {
	    $length += strlen($body_part_trailing);
	    if ($stream) {
        	$this->preWriteToStream($body_part_trailing);     
		$this->writeToStream($stream, $body_part_trailing);
	    }
	}
    }
    
    function clean_crlf(&$s) {
        $s = str_replace("\r\n", "\n", $s);
        $s = str_replace("\r", "\n", $s);
        $s = str_replace("\n", "\r\n", $s);
	return strlen($s);
    }

    function preWriteToStream(&$s) {
    }
    
    function writeToStream($stream, $data) {
       fputs($stream, $data);
    }
    
    function initStream($message, $length=0, $host='', $port='', $user='', $pass='') {
       return $stream;
    }
    
    function getBcc() {
       return false;
    }

    function prepareMIME_Header($message, $boundary) {
	$mime_header = $message->mime_header;
	$rn="\r\n";
	$header = array();
	
	$contenttype = 'Content-Type: '. $mime_header->type0 .'/'.
    	               $mime_header->type1;
	if (count($message->entities)) {
	    $contenttype .= ";\r\n " . 'boundary="'.$boundary.'"';
	}		       
	if (isset($mime_header->parameters['name'])) {
    	    $contenttype .= '; name="'.
        	encodeHeader($mime_header->parameters['name']). '"';
	}
	if (isset($mime_header->parameters['charset'])) {
	    $charset = $mime_header->parameters['charset'];
    	    $contenttype .= '; charset="'.
        	encodeHeader($charset). '"';
	}


	$header[] = $contenttype . $rn;
	if ($mime_header->description) {
    	    $header[] .= 'Content-Description: ' . $mime_header->description . $rn;
	}
	if ($mime_header->encoding) {
	    $encoding = $mime_header->encoding;
    	    $header[] .= 'Content-Transfer-Encoding: ' . $mime_header->encoding . $rn;
	} else {
	    if ($mime_header->type0 == 'text' || $mime_header->type0 == 'message') {
		$header[] .= 'Content-Transfer-Encoding: 8bit' .  $rn;
    	    } else {
		$header[] .= 'Content-Transfer-Encoding: base64' .  $rn;
	    }
	}
	if ($mime_header->id) {
    	    $header[] .= 'Content-ID: ' . $mime_header->id . $rn;
	}
	if ($mime_header->disposition) {
	    $disposition = $mime_header->disposition;
    	    $contentdisp = 'Content-Disposition: ' . $disposition->name;
    	    if ($disposition->getProperty('filename')) {
        	$contentdisp .= '; filename="'.
        	    encodeHeader($disposition->getProperty('filename')). '"';
    	    }
    	    $header[] = $contentdisp . $rn;       
	}
	if ($mime_header->md5) {
    	    $header[] .= 'Content-MD5: ' . $mime_header->md5 . $rn;
	}
	if ($mime_header->language) {
    	    $header[] .= 'Content-Language: ' . $mime_header->language . $rn;
	}

	$cnt = count($header);
	$hdr_s = '';
	for ($i = 0 ; $i < $cnt ; $i++)	{
    	    $hdr_s .= $this->foldLine($header[$i], 78,str_pad('',4));
	}
	$header = $hdr_s;
	$header .= $rn; /* One blank line to separate mimeheader and body-entity */
	return $header;
    }    

    function prepareRFC822_Header($rfc822_header, $reply_rfc822_header, &$raw_length) {
	global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT;
	global $version, $useSendmail, $username;
	global $HTTP_VIA, $HTTP_X_FORWARDED_FOR;
	global $REMOTE_HOST;
	$rn = "\r\n";
	/* This creates an RFC 822 date */
	$date = date("D, j M Y H:i:s ", mktime()) . $this->timezone();
	/* Create a message-id */
	$message_id = '<' . $REMOTE_PORT . '.' . $REMOTE_ADDR . '.';
	$message_id .= time() . '.squirrel@' . $SERVER_NAME .'>';
	/* Make an RFC822 Received: line */
	if (isset($REMOTE_HOST)) {
    	    $received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
	} else {
    	    $received_from = $REMOTE_ADDR;
	}
	if (isset($HTTP_VIA) || isset ($HTTP_X_FORWARDED_FOR)) {
    	    if ($HTTP_X_FORWARDED_FOR == '') {
        	$HTTP_X_FORWARDED_FOR = 'unknown';
    	    }
    	    $received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
	}
	$header = array();
	$header[] = "Received: from $received_from" . $rn;
        $header[] = "        (SquirrelMail authenticated user $username)" . $rn;
        $header[] = "        by $SERVER_NAME with HTTP;" . $rn;
	$header[] = "        $date" . $rn;
        /* Insert the rest of the header fields */
        $header[] = 'Message-ID: '. $message_id . $rn;
        if ($reply_rfc822_header->message_id) {
	    $header[] = 'In-Reply-To: '.$reply_rfc822_header->message_id . $rn;
    	    $references = $this->calculate_references($reply_rfc822_header);
	    $header[] = 'References: '.$references . $rn;
	}	
	$header[] = "Date: $date" . $rn;
        $header[] = 'Subject: '.encodeHeader($rfc822_header->subject) . $rn;
        $header[] = 'From: '. encodeHeader($rfc822_header->getAddr_s('from')) . $rn;
	/* RFC2822 if from contains more then 1 address */	
        if (count($rfc822_header->from) > 1) {
	    $header[] = 'Sender: '. encodeHeader($rfc822_header->getAddr_s('sender')) . $rn;
	}
	if (count($rfc822_header->to)) {
	    $header[] = 'To: '. encodeHeader($rfc822_header->getAddr_s('to')) . $rn;
        }
	if (count($rfc822_header->cc)) {
	    $header[] = 'Cc: '. encodeHeader($rfc822_header->getAddr_s('cc')) . $rn;
	}
	if (count($rfc822_header->reply_to)) {
	    $header[] = 'Reply-To: '. encodeHeader($rfc822_header->getAddr_s('reply_to')) . $rn;
	}
	/* Sendmail should return true. Default = false */
	$bcc = $this->getBcc();
	if (count($rfc822_header->bcc)) {
	    $s = 'Bcc: '. encodeHeader($rfc822_header->getAddr_s('bcc')) . $rn;
	    if (!$bcc) {
	       $s = $this->foldLine($s, 78, str_pad('',4));
	       $raw_length += strlen($s);
	    } else {
	       $header[] = $s;
	    }
	}
	/* Identify SquirrelMail */	
	$header[] = "X-Mailer: SquirrelMail (version $version)" . $rn; 
	/* Do the MIME-stuff */
	$header[] = "MIME-Version: 1.0" . $rn;
	$contenttype = 'Content-Type: '. $rfc822_header->content_type->type0 .'/'.
                                         $rfc822_header->content_type->type1;
	if (count($rfc822_header->content_type->properties)) {
    	    foreach ($rfc822_header->content_type->properties as $k => $v) {
	        if ($k && $v) {
        	    $contenttype .= ';' .$k.'='.$v; 
		}
    	    }
	}
        $header[] = $contenttype . $rn;
        if ($rfc822_header->dnt) {
	    $dnt = $rfc822_header->getAddr_s('dnt'); 
    	    /* Pegasus Mail */
    	    $header[] = 'X-Confirm-Reading-To: '.$dnt. $rn;
    	    /* RFC 2298 */
    	    $header[] = 'Disposition-Notification-To: '.$dnt. $rn;
	}
	if ($rfc822_header->priority) {
    	    $prio = $rfc822_header->priority;
	    $header[] = 'X-Priority: '.$prio. $rn;
    	    switch($prio) {
    	      case 1: $header[] = 'Importance: High'. $rn; break;
    	      case 3: $header[] = 'Importance: Normal'. $rn; break;
    	      case 5: $header[] = 'Importance: Low'. $rn; break;
	      default: break;
    	    }
	}
	/* Insert headers from the $more_headers array */	
	if(count($rfc822_header->more_headers)) {
    	    reset($rfc822_header->more_headers);
    	    foreach ($rfc822_header->more_headers as $k => $v) {
    		$header[] = $k.': '.$v .$rn;
    	    }	       
	}        
	$cnt = count($header);
	$hdr_s = '';
	for ($i = 0 ; $i < $cnt ; $i++) {
    	    $hdr_s .= $this->foldLine($header[$i], 78, str_pad('',4));
	}
	$header = $hdr_s;
	$header .= $rn; /* One blank line to separate header and body */
	$raw_length += strlen($header);
	return $header;
    }

    /*
    * function for cleanly folding of headerlines
    */
    function foldLine($line, $length, $pre='') {
	$cnt = strlen($line);
	$res = '';
	if ($cnt > $length) {
	    $fold_string = "\r\n " . $pre;
	    $length -=strlen($fold_string);
    	    for ($i=0;$i<($cnt-$length);$i++) {
        	$fold_pos = 0;
		/* first try to fold at delimiters */
        	for ($j=($i+$length); $j>$i; --$j) {
		    switch ($line{$j}) {
	    	      case (','):
	    	      case (';'): $fold_pos = $i = $j; break;
	    	      default: break;
	    	    }
		}
		if (!$fold_pos) { /* not succeed yet so we try at spaces & = */
            	    for ($j=($i+$length); $j>$i; $j--) {
                	switch ($line{$j}) {
	        	  case (' '):
	        	  case ('='): $fold_pos = $i = $j; break;
	        	  default: break;
	        	}
	    	    }
		}
		if (!$fold_pos) { /* clean folding didn't work */
	    	    $i = $j = $fold_pos = $i+$length;
		}
		$line = substr_replace($line,$line{$fold_pos}.$fold_string,
		                       $fold_pos,1);
		$cnt += strlen($fold_string);
		$i = $j + strlen($fold_string);
    	    }	    
	}
	return $line;
    }	   


    function mimeBoundary () {
	static $mimeBoundaryString;

	if ( !isset( $mimeBoundaryString ) ||
    	    $mimeBoundaryString == '') {
    	    $mimeBoundaryString = '----=_' . date( 'YmdHis' ) . '_' .
        	mt_rand( 10000, 99999 );
	}
	return $mimeBoundaryString;
    }

    /* Time offset for correct timezone */
    function timezone () {
	global $invert_time;
    
	$diff_second = date('Z');
	if ($invert_time) {
    	    $diff_second = - $diff_second;
	}
	if ($diff_second > 0) {
    	    $sign = '+';
	} else {
    	    $sign = '-';
	}
	$diff_second = abs($diff_second);
	$diff_hour = floor ($diff_second / 3600);
	$diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
	$zonename = '('.strftime('%Z').')';
	$result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute, 
                       $zonename);
	return ($result);
    }

    function calculate_references($hdr) {
        $refer = $hdr->references;
	if (strlen($refer) > 2) {
    	    $refer .= ' ' . $hdr->message_id;
	} else {
    	    if ($hdr->in_reply_to) {
        	$refer .= $hdr->in_reply_to . ' ' . $hdr->message_id;
    	    } else {
        	$refer .= $hdr->message_id;
    	    }                        
	}
	trim($refer);
	return $refer;
    }
}
?>
Commit	Line	Data
4960ec8e	1	<?php
4960ec8e	2
69298c28	3	/**
	4	* Deliver.class.php
	5	*
	6	* Copyright (c) 1999-2002 The SquirrelMail Project Team
	7	* Licensed under the GNU GPL. For full terms see the file COPYING.
	8	*
	9	* This contains all the functions needed to send messages through
	10	* a delivery backend.
	11	*
	12	* $Id$
	13	*/
	14
4960ec8e	15	class Deliver {
4960ec8e	16
59387d1c	17	function mail($message, $stream=false) {
3b53d87f	18	$rfc822_header = $message->rfc822_header;
3b53d87f	19	if (count($message->entities)) {
59387d1c	20	$boundary = $this->mimeBoundary();
1274f430	21	$rfc822_header->content_type->properties['boundary']='"'.$boundary.'"';
3b53d87f	22	} else {
	23	$boundary='';
	24	}
75b14a70	25	$raw_length = 0;
1274f430	26	$reply_rfc822_header = (isset($message->reply_rfc822_header)
1274f430	27	? $message->reply_rfc822_header : '');
75b14a70	28	$header = $this->prepareRFC822_Header($rfc822_header, $reply_rfc822_header, $raw_length);
75b14a70	29
3b53d87f	30	if ($stream) {
59387d1c	31	$this->preWriteToStream($header);
59387d1c	32	$this->writeToStream($stream, $header);
3b53d87f	33	}
59387d1c	34	$this->writeBody($message, $stream, $raw_length, $boundary);
3b53d87f	35	return $raw_length;
	36	}
	37
	38	function writeBody($message, $stream, &$length_raw, $boundary='') {
1274f430	39	if ($boundary && !$message->rfc822_header) {
3b53d87f	40	$s = '--'.$boundary."\r\n";
	41	$s .= $this->prepareMIME_Header($message, $boundary);
	42	$length_raw += strlen($s);
	43	if ($stream) {
	44	$this->preWriteToStream($s);
	45	$this->writeToStream($stream, $s);
	46	}
	47	}
59387d1c	48	$this->writeBodyPart($message, $stream, $length_raw);
3b53d87f	49	$boundary_depth = substr_count($message->entity_id,'.');
	50	if ($boundary_depth) {
	51	$boundary .= '_part'.$boundary_depth;
	52	}
1274f430	53	$last = false;
3b53d87f	54	for ($i=0, $entCount=count($message->entities);$i<$entCount;$i++) {
59387d1c	55	$msg = $this->writeBody($message->entities[$i], $stream, $length_raw, $boundary);
1274f430	56	if ($i == $entCount-1) $last = true;
3b53d87f	57	}
1274f430	58	if ($boundary && $last) {
252737e1	59	$s = "--".$boundary."--\r\n\r\n";
3b53d87f	60	$length_raw += strlen($s);
	61	if ($stream) {
	62	$this->preWriteToStream($s);
	63	$this->writeToStream($stream, $s);
	64	}
	65	}
	66	}
	67
	68	function writeBodyPart($message, $stream, &$length) {
1274f430	69	if ($message->mime_header) {
	70	$type0 = $message->mime_header->type0;
	71	} else {
	72	$type0 = $message->rfc822_header->content_type->type0;
	73	}
252737e1	74
252737e1	75	$body_part_trailing = $last = '';
1274f430	76	switch ($type0) {
3b53d87f	77	case 'text':
	78	case 'message':
	79	if ($message->body_part) {
	80	$body_part = $message->body_part;
	81	$length += $this->clean_crlf($body_part);
	82	if ($stream) {
	83	$this->preWriteToStream($body_part);
59387d1c	84	$this->writeToStream($stream, $body_part);
3b53d87f	85	}
252737e1	86	$last = $body_part;
3b53d87f	87	} elseif ($message->att_local_name) {
	88	$filename = $message->att_local_name;
	89	$file = fopen ($filename, 'rb');
252737e1	90	while ($body_part = fgets($file, 4096)) {
252737e1	91	$length += $this->clean_crlf($body_part);
3b53d87f	92	if ($stream) {
252737e1	93	$this->preWriteToStream($body_part);
252737e1	94	$this->writeToStream($stream, $body_part);
59387d1c	95	}
252737e1	96	$last = $body_part;
3b53d87f	97	}
	98	fclose($file);
	99	}
	100	break;
	101	default:
	102	if ($message->body_part) {
	103	$body_part = $message->body_part;
	104	$length += $this->clean_crlf($body_part);
	105	if ($stream) {
59387d1c	106	$this->writeToStream($stream, $body_part);
59387d1c	107	}
3b53d87f	108	} elseif ($message->att_local_name) {
	109	$filename = $message->att_local_name;
	110	$file = fopen ($filename, 'rb');
252737e1	111	$encoded = '';
1274f430	112	while ($tmp = fread($file, 570)) {
252737e1	113	$body_part = chunk_split(base64_encode($tmp));
252737e1	114	$length += $this->clean_crlf($body_part);
3b53d87f	115	if ($stream) {
252737e1	116	$this->writeToStream($stream, $body_part);
3b53d87f	117	}
	118	}
	119	fclose($file);
	120	}
	121	break;
	122	}
252737e1	123	$body_part_trailing = '';
	124	if ($last && substr($last,-1) != "\n") {
	125	$body_part_trailing = "\r\n";
	126	}
	127	if ($body_part_trailing) {
	128	$length += strlen($body_part_trailing);
	129	if ($stream) {
	130	$this->preWriteToStream($body_part_trailing);
	131	$this->writeToStream($stream, $body_part_trailing);
	132	}
1274f430	133	}
3b53d87f	134	}
3b53d87f	135
69298c28	136	function clean_crlf(&$s) {
3b53d87f	137	$s = str_replace("\r\n", "\n", $s);
	138	$s = str_replace("\r", "\n", $s);
	139	$s = str_replace("\n", "\r\n", $s);
	140	return strlen($s);
	141	}
	142
69298c28	143	function preWriteToStream(&$s) {
3b53d87f	144	}
	145
	146	function writeToStream($stream, $data) {
1274f430	147	fputs($stream, $data);
3b53d87f	148	}
	149
	150	function initStream($message, $length=0, $host='', $port='', $user='', $pass='') {
	151	return $stream;
	152	}
59387d1c	153
0dab3bfb	154	function getBcc() {
59387d1c	155	return false;
59387d1c	156	}
3b53d87f	157
3b53d87f	158	function prepareMIME_Header($message, $boundary) {
59387d1c	159	$mime_header = $message->mime_header;
59387d1c	160	$rn="\r\n";
4960ec8e	161	$header = array();
3b53d87f	162
59387d1c	163	$contenttype = 'Content-Type: '. $mime_header->type0 .'/'.
59387d1c	164	$mime_header->type1;
3b53d87f	165	if (count($message->entities)) {
	166	$contenttype .= ";\r\n " . 'boundary="'.$boundary.'"';
	167	}
4960ec8e	168	if (isset($mime_header->parameters['name'])) {
1274f430	169	$contenttype .= '; name="'.
4960ec8e	170	encodeHeader($mime_header->parameters['name']). '"';
4960ec8e	171	}
1274f430	172	if (isset($mime_header->parameters['charset'])) {
	173	$charset = $mime_header->parameters['charset'];
	174	$contenttype .= '; charset="'.
	175	encodeHeader($charset). '"';
	176	}
	177
	178
4960ec8e	179	$header[] = $contenttype . $rn;
	180	if ($mime_header->description) {
	181	$header[] .= 'Content-Description: ' . $mime_header->description . $rn;
	182	}
	183	if ($mime_header->encoding) {
1274f430	184	$encoding = $mime_header->encoding;
4960ec8e	185	$header[] .= 'Content-Transfer-Encoding: ' . $mime_header->encoding . $rn;
1274f430	186	} else {
	187	if ($mime_header->type0 == 'text' \|\| $mime_header->type0 == 'message') {
	188	$header[] .= 'Content-Transfer-Encoding: 8bit' . $rn;
	189	} else {
	190	$header[] .= 'Content-Transfer-Encoding: base64' . $rn;
	191	}
4960ec8e	192	}
	193	if ($mime_header->id) {
	194	$header[] .= 'Content-ID: ' . $mime_header->id . $rn;
	195	}
	196	if ($mime_header->disposition) {
1274f430	197	$disposition = $mime_header->disposition;
	198	$contentdisp = 'Content-Disposition: ' . $disposition->name;
	199	if ($disposition->getProperty('filename')) {
	200	$contentdisp .= '; filename="'.
	201	encodeHeader($disposition->getProperty('filename')). '"';
4960ec8e	202	}
	203	$header[] = $contentdisp . $rn;
	204	}
	205	if ($mime_header->md5) {
	206	$header[] .= 'Content-MD5: ' . $mime_header->md5 . $rn;
	207	}
	208	if ($mime_header->language) {
	209	$header[] .= 'Content-Language: ' . $mime_header->language . $rn;
	210	}
	211
	212	$cnt = count($header);
	213	$hdr_s = '';
	214	for ($i = 0 ; $i < $cnt ; $i++) {
75b14a70	215	$hdr_s .= $this->foldLine($header[$i], 78,str_pad('',4));
4960ec8e	216	}
4960ec8e	217	$header = $hdr_s;
3b53d87f	218	$header .= $rn; /* One blank line to separate mimeheader and body-entity */
3b53d87f	219	return $header;
4960ec8e	220	}
4960ec8e	221
75b14a70	222	function prepareRFC822_Header($rfc822_header, $reply_rfc822_header, &$raw_length) {
4960ec8e	223	global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT;
	224	global $version, $useSendmail, $username;
	225	global $HTTP_VIA, $HTTP_X_FORWARDED_FOR;
	226	global $REMOTE_HOST;
59387d1c	227	$rn = "\r\n";
4960ec8e	228	/* This creates an RFC 822 date */
59387d1c	229	$date = date("D, j M Y H:i:s ", mktime()) . $this->timezone();
4960ec8e	230	/* Create a message-id */
	231	$message_id = '<' . $REMOTE_PORT . '.' . $REMOTE_ADDR . '.';
	232	$message_id .= time() . '.squirrel@' . $SERVER_NAME .'>';
	233	/* Make an RFC822 Received: line */
59387d1c	234	if (isset($REMOTE_HOST)) {
	235	$received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
	236	} else {
	237	$received_from = $REMOTE_ADDR;
	238	}
	239	if (isset($HTTP_VIA) \|\| isset ($HTTP_X_FORWARDED_FOR)) {
	240	if ($HTTP_X_FORWARDED_FOR == '') {
	241	$HTTP_X_FORWARDED_FOR = 'unknown';
	242	}
	243	$received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
	244	}
	245	$header = array();
	246	$header[] = "Received: from $received_from" . $rn;
	247	$header[] = " (SquirrelMail authenticated user $username)" . $rn;
	248	$header[] = " by $SERVER_NAME with HTTP;" . $rn;
	249	$header[] = " $date" . $rn;
	250	/* Insert the rest of the header fields */
	251	$header[] = 'Message-ID: '. $message_id . $rn;
1274f430	252	if ($reply_rfc822_header->message_id) {
	253	$header[] = 'In-Reply-To: '.$reply_rfc822_header->message_id . $rn;
	254	$references = $this->calculate_references($reply_rfc822_header);
59387d1c	255	$header[] = 'References: '.$references . $rn;
	256	}
	257	$header[] = "Date: $date" . $rn;
	258	$header[] = 'Subject: '.encodeHeader($rfc822_header->subject) . $rn;
	259	$header[] = 'From: '. encodeHeader($rfc822_header->getAddr_s('from')) . $rn;
	260	/* RFC2822 if from contains more then 1 address */
	261	if (count($rfc822_header->from) > 1) {
	262	$header[] = 'Sender: '. encodeHeader($rfc822_header->getAddr_s('sender')) . $rn;
	263	}
75b14a70	264	if (count($rfc822_header->to)) {
	265	$header[] = 'To: '. encodeHeader($rfc822_header->getAddr_s('to')) . $rn;
	266	}
59387d1c	267	if (count($rfc822_header->cc)) {
	268	$header[] = 'Cc: '. encodeHeader($rfc822_header->getAddr_s('cc')) . $rn;
	269	}
	270	if (count($rfc822_header->reply_to)) {
	271	$header[] = 'Reply-To: '. encodeHeader($rfc822_header->getAddr_s('reply_to')) . $rn;
	272	}
	273	/* Sendmail should return true. Default = false */
1274f430	274	$bcc = $this->getBcc();
75b14a70	275	if (count($rfc822_header->bcc)) {
	276	$s = 'Bcc: '. encodeHeader($rfc822_header->getAddr_s('bcc')) . $rn;
	277	if (!$bcc) {
	278	$s = $this->foldLine($s, 78, str_pad('',4));
	279	$raw_length += strlen($s);
	280	} else {
	281	$header[] = $s;
	282	}
59387d1c	283	}
	284	/* Identify SquirrelMail */
	285	$header[] = "X-Mailer: SquirrelMail (version $version)" . $rn;
	286	/* Do the MIME-stuff */
	287	$header[] = "MIME-Version: 1.0" . $rn;
	288	$contenttype = 'Content-Type: '. $rfc822_header->content_type->type0 .'/'.
	289	$rfc822_header->content_type->type1;
	290	if (count($rfc822_header->content_type->properties)) {
1274f430	291	foreach ($rfc822_header->content_type->properties as $k => $v) {
	292	if ($k && $v) {
	293	$contenttype .= ';' .$k.'='.$v;
	294	}
59387d1c	295	}
	296	}
	297	$header[] = $contenttype . $rn;
	298	if ($rfc822_header->dnt) {
	299	$dnt = $rfc822_header->getAddr_s('dnt');
	300	/* Pegasus Mail */
	301	$header[] = 'X-Confirm-Reading-To: '.$dnt. $rn;
	302	/* RFC 2298 */
	303	$header[] = 'Disposition-Notification-To: '.$dnt. $rn;
	304	}
	305	if ($rfc822_header->priority) {
	306	$prio = $rfc822_header->priority;
	307	$header[] = 'X-Priority: '.$prio. $rn;
	308	switch($prio) {
	309	case 1: $header[] = 'Importance: High'. $rn; break;
	310	case 3: $header[] = 'Importance: Normal'. $rn; break;
	311	case 5: $header[] = 'Importance: Low'. $rn; break;
	312	default: break;
	313	}
	314	}
	315	/* Insert headers from the $more_headers array */
	316	if(count($rfc822_header->more_headers)) {
	317	reset($rfc822_header->more_headers);
	318	foreach ($rfc822_header->more_headers as $k => $v) {
	319	$header[] = $k.': '.$v .$rn;
	320	}
	321	}
	322	$cnt = count($header);
	323	$hdr_s = '';
	324	for ($i = 0 ; $i < $cnt ; $i++) {
75b14a70	325	$hdr_s .= $this->foldLine($header[$i], 78, str_pad('',4));
59387d1c	326	}
	327	$header = $hdr_s;
	328	$header .= $rn; /* One blank line to separate header and body */
75b14a70	329	$raw_length += strlen($header);
59387d1c	330	return $header;
4960ec8e	331	}
	332
	333	/*
	334	* function for cleanly folding of headerlines
	335	*/
1274f430	336	function foldLine($line, $length, $pre='') {
	337	$cnt = strlen($line);
	338	$res = '';
	339	if ($cnt > $length) {
	340	$fold_string = "\r\n " . $pre;
	341	$length -=strlen($fold_string);
	342	for ($i=0;$i<($cnt-$length);$i++) {
	343	$fold_pos = 0;
	344	/* first try to fold at delimiters */
	345	for ($j=($i+$length); $j>$i; --$j) {
	346	switch ($line{$j}) {
	347	case (','):
	348	case (';'): $fold_pos = $i = $j; break;
	349	default: break;
	350	}
4960ec8e	351	}
1274f430	352	if (!$fold_pos) { /* not succeed yet so we try at spaces & = */
	353	for ($j=($i+$length); $j>$i; $j--) {
	354	switch ($line{$j}) {
	355	case (' '):
	356	case ('='): $fold_pos = $i = $j; break;
	357	default: break;
	358	}
	359	}
	360	}
	361	if (!$fold_pos) { /* clean folding didn't work */
	362	$i = $j = $fold_pos = $i+$length;
	363	}
	364	$line = substr_replace($line,$line{$fold_pos}.$fold_string,
	365	$fold_pos,1);
	366	$cnt += strlen($fold_string);
	367	$i = $j + strlen($fold_string);
	368	}
	369	}
	370	return $line;
4960ec8e	371	}
3b53d87f	372
3b53d87f	373
59387d1c	374	function mimeBoundary () {
59387d1c	375	static $mimeBoundaryString;
3b53d87f	376
59387d1c	377	if ( !isset( $mimeBoundaryString ) \|\|
	378	$mimeBoundaryString == '') {
	379	$mimeBoundaryString = '----=_' . date( 'YmdHis' ) . '_' .
	380	mt_rand( 10000, 99999 );
	381	}
	382	return $mimeBoundaryString;
3b53d87f	383	}
3b53d87f	384
59387d1c	385	/* Time offset for correct timezone */
	386	function timezone () {
	387	global $invert_time;
3b53d87f	388
59387d1c	389	$diff_second = date('Z');
	390	if ($invert_time) {
	391	$diff_second = - $diff_second;
	392	}
	393	if ($diff_second > 0) {
	394	$sign = '+';
	395	} else {
	396	$sign = '-';
	397	}
	398	$diff_second = abs($diff_second);
	399	$diff_hour = floor ($diff_second / 3600);
	400	$diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
	401	$zonename = '('.strftime('%Z').')';
	402	$result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute,
3b53d87f	403	$zonename);
59387d1c	404	return ($result);
59387d1c	405	}
3b53d87f	406
1274f430	407	function calculate_references($hdr) {
1274f430	408	$refer = $hdr->references;
59387d1c	409	if (strlen($refer) > 2) {
1274f430	410	$refer .= ' ' . $hdr->message_id;
59387d1c	411	} else {
1274f430	412	if ($hdr->in_reply_to) {
1274f430	413	$refer .= $hdr->in_reply_to . ' ' . $hdr->message_id;
59387d1c	414	} else {
1274f430	415	$refer .= $hdr->message_id;
59387d1c	416	}
	417	}
	418	trim($refer);
	419	return $refer;
	420	}
	421	}
4960ec8e	422	?>