[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='';
       }
       $reply_rfc822_header = (isset($message->reply_rfc822_header) 
        	             ? $message->reply_rfc822_header : '');
       $header = $this->prepareRFC822_Header($rfc822_header, $reply_rfc822_header);
       $raw_length = strlen($header);
       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) {
	    $s = "\r\n--".$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 = $message->rfc822_header->content_type->type0;
	}
	switch ($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, $body_part);
	       }
	    } elseif ($message->att_local_name) {
	        $filename = $message->att_local_name;
		$file = fopen ($filename, 'rb');
		while ($tmp = fgets($file, 4096)) {
		   $length += $this->clean_crlf($tmp);
		   if ($stream) {
		      $this->preWriteToStream($tmp);
		      $this->writeToStream($stream, $tmp);
                   }
		}
		fclose($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');
		while ($tmp = fread($file, 570)) {
		   $encoded = chunk_split(base64_encode($tmp));
		   
		   if ($stream) {
		      $this->writeToStream($stream, $encoded);
		   }
		}
		fclose($file);
	    }
	    break;
	}
	$body_part_trailing = "\r\n";
	$length += strlen($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, '    ');
	}
	$header = $hdr_s;
	$header .= $rn; /* One blank line to separate mimeheader and body-entity */
	return $header;
    }    

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