sendmail.inc
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	<?php

	/*
	+-----------------------------------------------------------------------+
	\| program/steps/mail/sendmail.inc \|
	\| \|
	\| This file is part of the RoundCube Webmail client \|
	\| Copyright (C) 2005-2008, RoundCube Dev. - Switzerland \|
	\| Licensed under the GNU GPL \|
	\| \|
	\| PURPOSE: \|
	\| Compose a new mail message with all headers and attachments \|
	\| and send it using the PEAR::Net_SMTP class or with PHP mail() \|
	\| \|
	+-----------------------------------------------------------------------+
	\| Author: Thomas Bruederli <roundcube@gmail.com> \|
	+-----------------------------------------------------------------------+

	$Id$

	*/


	if (!isset($_SESSION['compose']['id']))
	{
	rcmail_overwrite_action('list');
	return;
	}


	/**** message sending functions ******/


	// get identity record
	function rcmail_get_identity($id)
	{
	global $USER, $OUTPUT;

	if ($sql_arr = $USER->get_identity($id))
	{
	$out = $sql_arr;
	$out['mailto'] = $sql_arr['email'];
	$name = strpos($sql_arr['name'], ",") ? '"'.$sql_arr['name'].'"' : $sql_arr['name'];
	$out['string'] = sprintf('%s <%s>',
	rcube_charset_convert($name, RCMAIL_CHARSET, $OUTPUT->get_charset()),
	$sql_arr['email']);
	return $out;
	}

	return FALSE;
	}

	/**
	* go from this:
	* <img src=".../tiny_mce/plugins/emotions/images/smiley-cool.gif" border="0" alt="Cool" title="Cool" />
	*
	* to this:
	*
	* <IMG src="cid:smiley-cool.gif"/>
	* ...
	* ------part...
	* Content-Type: image/gif
	* Content-Transfer-Encoding: base64
	* Content-ID: <smiley-cool.gif>
	*/
	function rcmail_attach_emoticons(&$mime_message)
	{
	global $CONFIG;

	$htmlContents = $mime_message->getHtmlBody();

	// remove any null-byte characters before parsing
	$body = preg_replace('/\x00/', '', $htmlContents);

	$last_img_pos = 0;

	$searchstr = 'program/js/tiny_mce/plugins/emotions/images/';

	// keep track of added images, so they're only added once
	$included_images = array();

	// find emoticon image tags
	while ($pos = strpos($body, $searchstr, $last_img_pos))
	{
	$pos2 = strpos($body, '"', $pos);
	$body_pre = substr($body, 0, $pos);
	$image_name = substr($body,
	$pos + strlen($searchstr),
	$pos2 - ($pos + strlen($searchstr)));
	// sanitize image name so resulting attachment doesn't leave images dir
	$image_name = preg_replace('/[^a-zA-Z0-9_\.\-]/i','',$image_name);

	$body_post = substr($body, $pos2);

	if (! in_array($image_name, $included_images))
	{
	// add the image to the MIME message
	$img_file = INSTALL_PATH . '/' . $searchstr . $image_name;
	if(! $mime_message->addHTMLImage($img_file, 'image/gif', '', true, '_' . $image_name))
	$OUTPUT->show_message("emoticonerror", 'error');

	array_push($included_images, $image_name);
	}

	$body = $body_pre . 'cid:_' . $image_name . $body_post;

	$last_img_pos = $pos2;
	}

	$mime_message->setHTMLBody($body);
	}

	if (strlen($_POST['_draft_saveid']) > 3)
	$olddraftmessageid = get_input_value('_draft_saveid', RCUBE_INPUT_POST);

	$message_id = sprintf('<%s@%s>', md5(uniqid('rcmail'.rand(),true)), rcmail_mail_domain($_SESSION['imap_host']));
	$savedraft = !empty($_POST['_draft']) ? TRUE : FALSE;

	// remove all scripts and act as called in frame
	$OUTPUT->reset();
	$OUTPUT->framed = TRUE;


	/**** check submission and compose message ******/


	if (!$savedraft && empty($_POST['_to']) && empty($_POST['_cc']) && empty($_POST['_bcc']) && empty($_POST['_subject']) && $_POST['_message'])
	{
	$OUTPUT->show_message("sendingfailed", 'error');
	$OUTPUT->send('iframe');
	return;
	}


	// set default charset
	$input_charset = $OUTPUT->get_charset();
	$message_charset = isset($_POST['_charset']) ? $_POST['_charset'] : $input_charset;

	$mailto_regexp = array('/[,;]\s[\r\n]+/', '/[\r\n]+/', '/[,;]\s$/m', '/;/');
	$mailto_replace = array(', ', ', ', '', ',');

	// replace new lines and strip ending ', '
	$mailto = preg_replace($mailto_regexp, $mailto_replace, get_input_value('_to', RCUBE_INPUT_POST, TRUE, $message_charset));
	$mailcc = preg_replace($mailto_regexp, $mailto_replace, get_input_value('_cc', RCUBE_INPUT_POST, TRUE, $message_charset));
	$mailbcc = preg_replace($mailto_regexp, $mailto_replace, get_input_value('_bcc', RCUBE_INPUT_POST, TRUE, $message_charset));

	if (empty($mailto) && !empty($mailcc)) {
	$mailto = $mailcc;
	$mailcc = null;
	}
	else if (empty($mailto))
	$mailto = 'undisclosed-recipients:;';

	// get sender name and address
	$identity_arr = rcmail_get_identity(get_input_value('_from', RCUBE_INPUT_POST));
	$from = $identity_arr['mailto'];

	if (empty($identity_arr['string']))
	$identity_arr['string'] = $from;

	// compose headers array
	$headers = array('Date' => date('r'),
	'From' => rcube_charset_convert($identity_arr['string'], RCMAIL_CHARSET, $message_charset),
	'To' => $mailto);

	// additional recipients
	if (!empty($mailcc))
	$headers['Cc'] = $mailcc;

	if (!empty($mailbcc))
	$headers['Bcc'] = $mailbcc;

	if (!empty($identity_arr['bcc']))
	$headers['Bcc'] = ($headers['Bcc'] ? $headers['Bcc'].', ' : '') . $identity_arr['bcc'];

	// add subject
	$headers['Subject'] = trim(get_input_value('_subject', RCUBE_INPUT_POST, FALSE, $message_charset));

	if (!empty($identity_arr['organization']))
	$headers['Organization'] = $identity_arr['organization'];

	if (!empty($_POST['_replyto']))
	$headers['Reply-To'] = preg_replace($mailto_regexp, $mailto_replace, get_input_value('_replyto', RCUBE_INPUT_POST, TRUE, $message_charset));
	else if (!empty($identity_arr['reply-to']))
	$headers['Reply-To'] = $identity_arr['reply-to'];

	if (!empty($_SESSION['compose']['reply_msgid']))
	$headers['In-Reply-To'] = $_SESSION['compose']['reply_msgid'];

	if (!empty($_SESSION['compose']['references']))
	$headers['References'] = $_SESSION['compose']['references'];

	if (!empty($_POST['_priority']))
	{
	$priority = intval($_POST['_priority']);
	$a_priorities = array(1=>'highest', 2=>'high', 4=>'low', 5=>'lowest');
	if ($str_priority = $a_priorities[$priority])
	$headers['X-Priority'] = sprintf("%d (%s)", $priority, ucfirst($str_priority));
	}

	if (!empty($_POST['_receipt']))
	{
	$headers['Return-Receipt-To'] = $identity_arr['string'];
	$headers['Disposition-Notification-To'] = $identity_arr['string'];
	}

	// additional headers
	if ($CONFIG['http_received_header'])
	{
	$nldlm = rcmail_header_delm() . "\t";
	$headers['Received'] = wordwrap('from ' . (isset($_SERVER['HTTP_X_FORWARDED_FOR']) ?
	gethostbyaddr($_SERVER['HTTP_X_FORWARDED_FOR']).' ['.$_SERVER['HTTP_X_FORWARDED_FOR'].']'.$nldlm.' via ' : '') .
	gethostbyaddr($_SERVER['REMOTE_ADDR']).' ['.$_SERVER['REMOTE_ADDR'].']'.$nldlm.'with ' .
	$_SERVER['SERVER_PROTOCOL'].' ('.$_SERVER['REQUEST_METHOD'].'); ' . date('r'),
	69, $nldlm);
	}

	$headers['Message-ID'] = $message_id;
	$headers['X-Sender'] = $from;

	if (!empty($CONFIG['useragent']))
	$headers['User-Agent'] = $CONFIG['useragent'];

	// fetch message body
	$message_body = get_input_value('_message', RCUBE_INPUT_POST, TRUE, $message_charset);

	// append generic footer to all messages
	if (!$savedraft && !empty($CONFIG['generic_message_footer']) && ($footer = file_get_contents(realpath($CONFIG['generic_message_footer']))))
	$message_body .= "\r\n" . rcube_charset_convert($footer, 'UTF-8', $message_charset);

	$isHtmlVal = strtolower(get_input_value('_is_html', RCUBE_INPUT_POST));
	$isHtml = ($isHtmlVal == "1");

	// create extended PEAR::Mail_mime instance
	$MAIL_MIME = new rcube_mail_mime(rcmail_header_delm());

	// For HTML-formatted messages, construct the MIME message with both
	// the HTML part and the plain-text part

	if ($isHtml)
	{
	$MAIL_MIME->setHTMLBody($message_body);

	// add a plain text version of the e-mail as an alternative part.
	$h2t = new html2text($message_body);
	$plainTextPart = wordwrap($h2t->get_text(), 998, "\r\n", true);
	if (!strlen($plainTextPart))
	{
	// empty message body breaks attachment handling in drafts
	$plainTextPart = "\r\n";
	}
	$MAIL_MIME->setTXTBody(html_entity_decode($plainTextPart, ENT_COMPAT, 'utf-8'));

	// look for "emoticon" images from TinyMCE and copy into message as attachments
	rcmail_attach_emoticons($MAIL_MIME);
	}
	else
	{
	$message_body = wordwrap($message_body, 75, "\r\n");
	$message_body = wordwrap($message_body, 998, "\r\n", true);
	if (!strlen($message_body))
	{
	// empty message body breaks attachment handling in drafts
	$message_body = "\r\n";
	}
	$MAIL_MIME->setTXTBody($message_body, FALSE, TRUE);
	}


	// add stored attachments, if any
	if (is_array($_SESSION['compose']['attachments']))
	foreach ($_SESSION['compose']['attachments'] as $id => $attachment)
	{
	$dispurl = '/\ssrc\s=\s[\'"]?\S+display-attachment\S+file=rcmfile' . $id . '[\'"]?/';
	$match = preg_match($dispurl, $message_body);
	if ($isHtml && ($match > 0))
	{
	$message_body = preg_replace($dispurl, ' src="'.$attachment['name'].'"', $message_body);
	$MAIL_MIME->setHTMLBody($message_body);
	$MAIL_MIME->addHTMLImage($attachment['path'], $attachment['mimetype'], $attachment['name']);
	}
	else
	{
	/*
	We need to replace mime_content_type in a later release because the function
	is deprecated in favour of File_Info
	*/
	$MAIL_MIME->addAttachment($attachment['path'],
	rc_mime_content_type($attachment['path'], $attachment['mimetype']),
	$attachment['name'], true, 'base64',
	'attachment', $message_charset);
	}
	}

	// add submitted attachments
	if (is_array($_FILES['_attachments']['tmp_name']))
	foreach ($_FILES['_attachments']['tmp_name'] as $i => $filepath)
	$MAIL_MIME->addAttachment($filepath, $files['type'][$i], $files['name'][$i], true, 'base64', 'attachment', $message_charset);


	// chose transfer encoding
	$charset_7bit = array('ASCII', 'ISO-2022-JP', 'ISO-8859-1', 'ISO-8859-2', 'ISO-8859-15');
	$transfer_encoding = in_array(strtoupper($message_charset), $charset_7bit) ? '7bit' : '8bit';

	// encoding settings for mail composing
	$MAIL_MIME->setParam(array(
	'text_encoding' => $transfer_encoding,
	'html_encoding' => 'quoted-printable',
	'head_encoding' => 'quoted-printable',
	'head_charset' => $message_charset,
	'html_charset' => $message_charset,
	'text_charset' => $message_charset,
	));

	// encoding subject header with mb_encode provides better results with asian characters
	if (function_exists("mb_encode_mimeheader"))
	{
	mb_internal_encoding($message_charset);
	$headers['Subject'] = mb_encode_mimeheader($headers['Subject'], $message_charset, 'Q');
	mb_internal_encoding(RCMAIL_CHARSET);
	}

	// pass headers to message object
	$MAIL_MIME->headers($headers);

	// Begin SMTP Delivery Block
	if (!$savedraft)
	{
	$sent = rcmail_deliver_message($MAIL_MIME, $from, $mailto);

	// return to compose page if sending failed
	if (!$sent)
	{
	$OUTPUT->show_message("sendingfailed", 'error');
	$OUTPUT->send('iframe');
	return;
	}

	// set repliead flag
	if ($_SESSION['compose']['reply_uid'])
	$IMAP->set_flag($_SESSION['compose']['reply_uid'], 'ANSWERED');

	} // End of SMTP Delivery Block



	// Determine which folder to save message
	if ($savedraft)
	$store_target = 'drafts_mbox';
	else
	$store_target = 'sent_mbox';

	if ($CONFIG[$store_target])
	{
	// check if mailbox exists
	if (!in_array_nocase($CONFIG[$store_target], $IMAP->list_mailboxes()))
	$store_folder = $IMAP->create_mailbox($CONFIG[$store_target], TRUE);
	else
	$store_folder = TRUE;

	// append message to sent box
	if ($store_folder)
	$saved = $IMAP->save_message($CONFIG[$store_target], $MAIL_MIME->getMessage());

	// raise error if saving failed
	if (!$saved)
	{
	raise_error(array('code' => 800, 'type' => 'imap', 'file' => __FILE__,
	'message' => "Could not save message in $CONFIG[$store_target]"), TRUE, FALSE);

	$OUTPUT->show_message('errorsaving', 'error');
	$OUTPUT->send('iframe');
	}

	if ($olddraftmessageid)
	{
	// delete previous saved draft
	$a_deleteid = $IMAP->search($CONFIG['drafts_mbox'],'HEADER Message-ID',$olddraftmessageid);
	$deleted = $IMAP->delete_message($IMAP->get_uid($a_deleteid[0],$CONFIG['drafts_mbox']),$CONFIG['drafts_mbox']);

	// raise error if deletion of old draft failed
	if (!$deleted)
	raise_error(array('code' => 800, 'type' => 'imap', 'file' => __FILE__,
	'message' => "Could not delete message from ".$CONFIG['drafts_mbox']), TRUE, FALSE);
	}
	}

	if ($savedraft)
	{
	// display success
	$OUTPUT->show_message('messagesaved', 'confirmation');

	// update "_draft_saveid" and the "cmp_hash" to prevent "Unsaved changes" warning
	$OUTPUT->command('set_draft_id', str_replace(array('<','>'), "", $message_id));
	$OUTPUT->command('compose_field_hash', true);

	// start the auto-save timer again
	$OUTPUT->command('auto_save_start');

	$OUTPUT->send('iframe');
	}
	else
	{
	if ($CONFIG['smtp_log'])
	{
	$log_entry = sprintf(
	"[%s] User: %d on %s; Message for %s; %s\n",
	date("d-M-Y H:i:s O", mktime()),
	$_SESSION['user_id'],
	$_SERVER['REMOTE_ADDR'],
	$mailto,
	!empty($smtp_response) ? join('; ', $smtp_response) : '');

	if ($fp = @fopen($CONFIG['log_dir'].'/sendmail', 'a'))
	{
	fwrite($fp, $log_entry);
	fclose($fp);
	}
	}

	rcmail_compose_cleanup();
	$OUTPUT->command('sent_successfully', rcube_label('messagesent'));
	$OUTPUT->send('iframe');
	}

	?>

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