sendmail.inc
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	<?php

	/**
	+-----------------------------------------------------------------------+
	\| program/steps/mail/sendmail.inc \|
	\| \|
	\| This file is part of the Roundcube Webmail client \|
	\| Copyright (C) 2005-2013, The Roundcube Dev Team \|
	\| \|
	\| Licensed under the GNU General Public License version 3 or \|
	\| any later version with exceptions for skins & plugins. \|
	\| See the README file for a full license statement. \|
	\| \|
	\| PURPOSE: \|
	\| Compose a new mail message and send it or store as draft \|
	+-----------------------------------------------------------------------+
	\| Author: Thomas Bruederli <roundcube@gmail.com> \|
	+-----------------------------------------------------------------------+
	*/

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

	$saveonly = !empty($_GET['_saveonly']);
	$savedraft = !empty($_POST['_draft']) && !$saveonly;
	$sendmail_delay = (int) $RCMAIL->config->get('sendmail_delay');
	$drafts_mbox = $RCMAIL->config->get('drafts_mbox');

	$COMPOSE_ID = rcube_utils::get_input_value('_id', rcube_utils::INPUT_GPC);
	$COMPOSE =& $_SESSION['compose_data_'.$COMPOSE_ID];

	/**** checks ******/

	if (!isset($COMPOSE['id'])) {
	rcube::raise_error(array('code' => 500, 'type' => 'php',
	'file' => __FILE__, 'line' => __LINE__,
	'message' => "Invalid compose ID"), true, false);

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

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

	if ($sendmail_delay) {
	$wait_sec = time() - $sendmail_delay - intval($RCMAIL->config->get('last_message_time'));
	if ($wait_sec < 0) {
	$OUTPUT->show_message('senttooquickly', 'error', array('sec' => $wait_sec * -1));
	$OUTPUT->send('iframe');
	}
	}
	}


	/**** compose message ******/

	// set default charset
	$message_charset = rcube_utils::get_input_value('_charset', rcube_utils::INPUT_POST) ?: $OUTPUT->get_charset();

	$EMAIL_FORMAT_ERROR = NULL;
	$RECIPIENT_COUNT = 0;

	$mailto = rcmail_email_input_format(rcube_utils::get_input_value('_to', rcube_utils::INPUT_POST, TRUE, $message_charset), true);
	$mailcc = rcmail_email_input_format(rcube_utils::get_input_value('_cc', rcube_utils::INPUT_POST, TRUE, $message_charset), true);
	$mailbcc = rcmail_email_input_format(rcube_utils::get_input_value('_bcc', rcube_utils::INPUT_POST, TRUE, $message_charset), true);

	if ($EMAIL_FORMAT_ERROR && !$savedraft) {
	$OUTPUT->show_message('emailformaterror', 'error', array('email' => $EMAIL_FORMAT_ERROR));
	$OUTPUT->send('iframe');
	}

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

	// Get sender name and address...
	$from = rcube_utils::get_input_value('_from', rcube_utils::INPUT_POST, true, $message_charset);
	// ... from identity...
	if (is_numeric($from)) {
	if (is_array($identity_arr = rcmail_get_identity($from))) {
	if ($identity_arr['mailto'])
	$from = $identity_arr['mailto'];
	if ($identity_arr['string'])
	$from_string = $identity_arr['string'];
	}
	else {
	$from = null;
	}
	}
	// ... if there is no identity record, this might be a custom from
	else if (($from_string = rcmail_email_input_format($from))
	&& preg_match('/(\S+@\S+)/', $from_string, $m)
	) {
	$from = trim($m[1], '<>');
	}
	// ... otherwise it's empty or invalid
	else {
	$from = null;
	}

	// check 'From' address (identity may be incomplete)
	if (!$savedraft && !$saveonly && empty($from)) {
	$OUTPUT->show_message('nofromaddress', 'error');
	$OUTPUT->send('iframe');
	}

	if (!$from_string && $from) {
	$from_string = $from;
	}

	if (empty($COMPOSE['param']['message-id'])) {
	$COMPOSE['param']['message-id'] = $RCMAIL->gen_message_id($from);
	}
	$message_id = $COMPOSE['param']['message-id'];

	// compose headers array
	$headers = array();

	// if configured, the Received headers goes to top, for good measure
	if ($RCMAIL->config->get('http_received_header')) {
	$nldlm = "\r\n\t";
	$http_header = 'from ';

	// FROM/VIA
	if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
	$hosts = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR'], 2);
	$http_header .= rcmail_received_host($hosts[0]) . $nldlm . ' via ';
	}

	$http_header .= rcmail_received_host($_SERVER['REMOTE_ADDR']);

	// BY
	$http_header .= $nldlm . 'by ' . $_SERVER['HTTP_HOST'];

	// WITH
	$http_header .= $nldlm . 'with HTTP (' . $_SERVER['SERVER_PROTOCOL']
	. ' ' . $_SERVER['REQUEST_METHOD'] . '); ' . date('r');

	$headers['Received'] = wordwrap($http_header, 69, $nldlm);
	}

	$headers['Date'] = $RCMAIL->user_date();
	$headers['From'] = rcube_charset::convert($from_string, RCUBE_CHARSET, $message_charset);
	$headers['To'] = $mailto;

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

	if (($max_recipients = (int) $RCMAIL->config->get('max_recipients')) > 0) {
	if ($RECIPIENT_COUNT > $max_recipients) {
	$OUTPUT->show_message('toomanyrecipients', 'error', array('max' => $max_recipients));
	$OUTPUT->send('iframe');
	}
	}

	$dont_override = (array) $RCMAIL->config->get('dont_override');
	$mdn_enabled = in_array('mdn_default', $dont_override) ? $RCMAIL->config->get('mdn_default') : !empty($_POST['_mdn']);
	$dsn_enabled = in_array('dsn_default', $dont_override) ? $RCMAIL->config->get('dsn_default') : !empty($_POST['_dsn']);
	$subject = trim(rcube_utils::get_input_value('_subject', rcube_utils::INPUT_POST, TRUE, $message_charset));

	if (strlen($subject)) {
	$headers['Subject'] = $subject;
	}
	if (!empty($identity_arr['organization'])) {
	$headers['Organization'] = $identity_arr['organization'];
	}
	if ($hdr = rcube_utils::get_input_value('_replyto', rcube_utils::INPUT_POST, TRUE, $message_charset)) {
	$headers['Reply-To'] = rcmail_email_input_format($hdr);
	}
	if (!empty($headers['Reply-To'])) {
	$headers['Mail-Reply-To'] = $headers['Reply-To'];
	}
	if ($hdr = rcube_utils::get_input_value('_followupto', rcube_utils::INPUT_POST, TRUE, $message_charset)) {
	$headers['Mail-Followup-To'] = rcmail_email_input_format($hdr);
	}

	// remember reply/forward UIDs in special headers
	if ($savedraft) {
	// Note: We ignore <UID>.<PART> forwards/replies here
	if (($uid = $COMPOSE['reply_uid']) && !preg_match('/^\d+\.[0-9.]+$/', $uid)) {
	$headers['X-Draft-Info'] = array('type' => 'reply', 'uid' => $uid);
	}
	else if (!empty($COMPOSE['forward_uid'])
	&& ($uid = rcube_imap_generic::compressMessageSet($COMPOSE['forward_uid']))
	&& !preg_match('/^\d+[0-9.]+$/', $uid)
	) {
	$headers['X-Draft-Info'] = array('type' => 'forward', 'uid' => $uid);
	}
	}

	if (!empty($COMPOSE['reply_msgid'])) {
	$headers['In-Reply-To'] = $COMPOSE['reply_msgid'];
	}
	if (!empty($COMPOSE['references'])) {
	$headers['References'] = $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 ($mdn_enabled) {
	$headers['Return-Receipt-To'] = $from_string;
	$headers['Disposition-Notification-To'] = $from_string;
	}

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

	if (is_array($headers['X-Draft-Info'])) {
	$headers['X-Draft-Info'] = rcmail_draftinfo_encode($headers['X-Draft-Info'] + array('folder' => $COMPOSE['mailbox']));
	}
	if ($hdr = $RCMAIL->config->get('useragent')) {
	$headers['User-Agent'] = $hdr;
	}

	// exec hook for header checking and manipulation
	// Depracated: use message_before_send hook instead
	$data = $RCMAIL->plugins->exec_hook('message_outgoing_headers', array('headers' => $headers));

	// sending aborted by plugin
	if ($data['abort'] && !$savedraft) {
	$OUTPUT->show_message($data['message'] ?: 'sendingfailed');
	$OUTPUT->send('iframe');
	}
	else {
	$headers = $data['headers'];
	}

	$isHtml = (bool) rcube_utils::get_input_value('_is_html', rcube_utils::INPUT_POST);

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

	if (isset($_POST['_pgpmime'])) {
	$pgp_mime = rcube_utils::get_input_value('_pgpmime', rcube_utils::INPUT_POST);
	$isHtml = false;
	$message_body = '';

	// clear unencrypted attachments
	foreach ((array) $COMPOSE['attachments'] as $attach) {
	$RCMAIL->plugins->exec_hook('attachment_delete', $attach);
	}

	$COMPOSE['attachments'] = array();
	}

	if ($isHtml) {
	$bstyle = array();

	if ($font_size = $RCMAIL->config->get('default_font_size')) {
	$bstyle[] = 'font-size: ' . $font_size;
	}
	if ($font_family = $RCMAIL->config->get('default_font')) {
	$bstyle[] = 'font-family: ' . rcmail::font_defs($font_family);
	}

	// append doctype and html/body wrappers
	$bstyle = !empty($bstyle) ? (" style='" . implode($bstyle, '; ') . "'") : '';
	$message_body = '<html><head>'
	. '<meta http-equiv="Content-Type" content="text/html; charset=' . $message_charset . '" /></head>'
	. "<body" . $bstyle . ">\r\n" . $message_body;
	}

	if (!$savedraft) {
	if ($isHtml) {
	$b_style = 'padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0';
	$pre_style = 'margin: 0; padding: 0; font-family: monospace';

	$message_body = preg_replace(
	array(
	// remove empty signature div
	'/<div id="_rc_sig">( )?<\/div>[\s\r\n]*$/',
	// remove signature's div ID
	'/\s*id="_rc_sig"/',
	// add inline css for blockquotes and container
	'/<blockquote>/',
	'/<div class="pre">/',
	// convert TinyMCE's new-line sequences (#1490463)
	'/<p> <\/p>/',
	),
	array(
	'',
	'',
	'<blockquote type="cite" style="'.$b_style.'">',
	'<div class="pre" style="'.$pre_style.'">',
	'<p><br /></p>',
	),
	$message_body);
	}

	// Check spelling before send
	if ($RCMAIL->config->get('spellcheck_before_send') && $RCMAIL->config->get('enable_spellcheck')
	&& empty($COMPOSE['spell_checked']) && !empty($message_body)
	) {
	$message_body = str_replace("\r\n", "\n", $message_body);
	$spellchecker = new rcube_spellchecker(rcube_utils::get_input_value('_lang', rcube_utils::INPUT_GPC));
	$spell_result = $spellchecker->check($message_body, $isHtml);

	$COMPOSE['spell_checked'] = true;

	if (!$spell_result) {
	if ($isHtml) {
	$result['words'] = $spellchecker->get();
	$result['dictionary'] = (bool) $RCMAIL->config->get('spellcheck_dictionary');
	}
	else {
	$result = $spellchecker->get_xml();
	}

	$OUTPUT->show_message('mispellingsfound', 'error');
	$OUTPUT->command('spellcheck_resume', $result);
	$OUTPUT->send('iframe');
	}
	}

	// generic footer for all messages
	if ($footer = rcmail_generic_message_footer($isHtml)) {
	$footer = rcube_charset::convert($footer, RCUBE_CHARSET, $message_charset);
	$message_body .= "\r\n" . $footer;
	}
	}

	if ($isHtml) {
	$message_body .= "\r\n</body></html>\r\n";
	}

	// sort attachments to make sure the order is the same as in the UI (#1488423)
	if ($files = rcube_utils::get_input_value('_attachments', rcube_utils::INPUT_POST)) {
	$files = explode(',', $files);
	$files = array_flip($files);
	foreach ($files as $idx => $val) {
	$files[$idx] = $COMPOSE['attachments'][$idx];
	unset($COMPOSE['attachments'][$idx]);
	}

	$COMPOSE['attachments'] = array_merge(array_filter($files), $COMPOSE['attachments']);
	}

	// set line length for body wrapping
	$LINE_LENGTH = $RCMAIL->config->get('line_length', 72);

	// Since we can handle big messages with disk usage, we need more time to work
	@set_time_limit(0);

	// create PEAR::Mail_mime instance
	$MAIL_MIME = new Mail_mime("\r\n");

	// Check if we have enough memory to handle the message in it
	// It's faster than using files, so we'll do this if we only can
	if (is_array($COMPOSE['attachments']) && ($mem_limit = parse_bytes(ini_get('memory_limit')))) {
	$memory = 0;
	foreach ($COMPOSE['attachments'] as $id => $attachment) {
	$memory += $attachment['size'];
	}

	// Yeah, Net_SMTP needs up to 12x more memory, 1.33 is for base64
	if (!rcube_utils::mem_check($memory * 1.33 * 12)) {
	$MAIL_MIME->setParam('delay_file_io', true);
	}
	}

	// For HTML-formatted messages, construct the MIME message with both
	// the HTML part and the plain-text part
	if ($isHtml) {
	$plugin = $RCMAIL->plugins->exec_hook('message_outgoing_body',
	array('body' => $message_body, 'type' => 'html', 'message' => $MAIL_MIME));

	$MAIL_MIME->setHTMLBody($plugin['body']);

	$plainTextPart = $RCMAIL->html2text($plugin['body'], array('width' => 0, 'charset' => $message_charset));
	$plainTextPart = rcube_mime::wordwrap($plainTextPart, $LINE_LENGTH, "\r\n", false, $message_charset);
	$plainTextPart = wordwrap($plainTextPart, 998, "\r\n", true);

	// There's no sense to use multipart/alternative if the text/plain
	// part would be blank. Completely blank text/plain part may confuse
	// some mail clients (#5283)
	if (strlen(trim($plainTextPart)) > 0) {
	// make sure all line endings are CRLF (#1486712)
	$plainTextPart = preg_replace('/\r?\n/', "\r\n", $plainTextPart);

	$plugin = $RCMAIL->plugins->exec_hook('message_outgoing_body',
	array('body' => $plainTextPart, 'type' => 'alternative', 'message' => $MAIL_MIME));

	// add a plain text version of the e-mail as an alternative part.
	$MAIL_MIME->setTXTBody($plugin['body']);
	}

	// Extract image Data URIs into message attachments (#1488502)
	rcmail_extract_inline_images($MAIL_MIME, $from);
	}
	else {
	$plugin = $RCMAIL->plugins->exec_hook('message_outgoing_body',
	array('body' => $message_body, 'type' => 'plain', 'message' => $MAIL_MIME));

	$message_body = $plugin['body'];

	// compose format=flowed content if enabled
	if ($flowed = ($savedraft \|\| $RCMAIL->config->get('send_format_flowed', true)))
	$message_body = rcube_mime::format_flowed($message_body, min($LINE_LENGTH+2, 79), $message_charset);
	else
	$message_body = rcube_mime::wordwrap($message_body, $LINE_LENGTH, "\r\n", false, $message_charset);

	$message_body = wordwrap($message_body, 998, "\r\n", true);

	$MAIL_MIME->setTXTBody($message_body, false, true);
	}

	// add stored attachments, if any
	if (is_array($COMPOSE['attachments'])) {
	foreach ($COMPOSE['attachments'] as $id => $attachment) {
	// This hook retrieves the attachment contents from the file storage backend
	$attachment = $RCMAIL->plugins->exec_hook('attachment_get', $attachment);

	if ($isHtml) {
	$dispurl = '/[\'"]\S+display-attachment\S+file=rcmfile' . preg_quote($attachment['id']) . '[\'"]/';
	$message_body = $MAIL_MIME->getHTMLBody();
	$is_inline = preg_match($dispurl, $message_body);
	}
	else {
	$is_inline = false;
	}

	// inline image
	if ($is_inline) {
	// Mail_Mime does not support many inline attachments with the same name (#1489406)
	// we'll generate cid: urls here to workaround this
	$cid = preg_replace('/[^0-9a-zA-Z]/', '', uniqid(time(), true));
	if (preg_match('#(@[0-9a-zA-Z\-\.]+)#', $from, $matches)) {
	$cid .= $matches[1];
	}
	else {
	$cid .= '@localhost';
	}

	$message_body = preg_replace($dispurl, '"cid:' . $cid . '"', $message_body);

	$MAIL_MIME->setHTMLBody($message_body);

	if ($attachment['data'])
	$MAIL_MIME->addHTMLImage($attachment['data'], $attachment['mimetype'], $attachment['name'], false, $cid);
	else
	$MAIL_MIME->addHTMLImage($attachment['path'], $attachment['mimetype'], $attachment['name'], true, $cid);
	}
	else {
	$ctype = str_replace('image/pjpeg', 'image/jpeg', $attachment['mimetype']); // #1484914
	$file = $attachment['data'] ?: $attachment['path'];
	$folding = (int) $RCMAIL->config->get('mime_param_folding');

	$MAIL_MIME->addAttachment($file,
	$ctype,
	$attachment['name'],
	$attachment['data'] ? false : true,
	$ctype == 'message/rfc822' ? '8bit' : 'base64',
	'attachment',
	$attachment['charset'],
	'', '',
	$folding ? 'quoted-printable' : NULL,
	$folding == 2 ? 'quoted-printable' : NULL,
	'', RCUBE_CHARSET
	);
	}
	}
	}

	$text_charset = $message_charset;
	$transfer_encoding = '7bit';
	$head_encoding = 'quoted-printable';

	// choose encodings for plain/text body and message headers
	if (preg_match('/ISO-2022/i', $message_charset)) {
	$head_encoding = 'base64'; // RFC1468
	}
	else if (preg_match('/[^\x00-\x7F]/', $MAIL_MIME->getTXTBody())) {
	$transfer_encoding = $RCMAIL->config->get('force_7bit') ? 'quoted-printable' : '8bit';
	}
	else if ($message_charset == 'UTF-8') {
	$text_charset = 'US-ASCII';
	}

	if ($flowed) {
	$text_charset .= ";\r\n format=flowed";
	}

	// compose PGP/Mime message
	if ($pgp_mime) {
	$MAIL_MIME->addAttachment(new Mail_mimePart('Version: 1', array(
	'content_type' => 'application/pgp-encrypted',
	'description' => 'PGP/MIME version identification',
	)));

	$MAIL_MIME->addAttachment(new Mail_mimePart($pgp_mime, array(
	'content_type' => 'application/octet-stream',
	'filename' => 'encrypted.asc',
	'disposition' => 'inline',
	)));

	$MAIL_MIME->setContentType('multipart/encrypted', array('protocol' => 'application/pgp-encrypted'));
	$MAIL_MIME->setParam('preamble', 'This is an OpenPGP/MIME encrypted message (RFC 2440 and 3156)');
	}

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

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

	// This hook allows to modify the message before send or save action
	$plugin = $RCMAIL->plugins->exec_hook('message_ready', array('message' => $MAIL_MIME));
	$MAIL_MIME = $plugin['message'];

	// Begin SMTP Delivery Block
	if (!$savedraft && !$saveonly) {
	// Handle Delivery Status Notification request
	$smtp_opts['dsn'] = $dsn_enabled;

	$sent = $RCMAIL->deliver_message($MAIL_MIME, $from, $mailto,
	$smtp_error, $mailbody_file, $smtp_opts, true);

	// return to compose page if sending failed
	if (!$sent) {
	// remove temp file
	if ($mailbody_file) {
	unlink($mailbody_file);
	}

	if ($smtp_error && is_string($smtp_error)) {
	$OUTPUT->show_message($smtp_error, 'error');
	}
	else if ($smtp_error && !empty($smtp_error['label'])) {
	$OUTPUT->show_message($smtp_error['label'], 'error', $smtp_error['vars']);
	}
	else {
	$OUTPUT->show_message('sendingfailed', 'error');
	}

	$OUTPUT->send('iframe');
	}

	// save message sent time
	if ($sendmail_delay) {
	$RCMAIL->user->save_prefs(array('last_message_time' => time()));
	}

	// set replied/forwarded flag
	if ($COMPOSE['reply_uid']) {
	foreach (rcmail::get_uids($COMPOSE['reply_uid'], $COMPOSE['mailbox']) as $mbox => $uids) {
	// skip <UID>.<PART> replies
	if (!preg_match('/^\d+\.[0-9.]+$/', implode(',', (array) $uids))) {
	$RCMAIL->storage->set_flag($uids, 'ANSWERED', $mbox);
	}
	}
	}
	else if ($COMPOSE['forward_uid']) {
	foreach (rcmail::get_uids($COMPOSE['forward_uid'], $COMPOSE['mailbox']) as $mbox => $uids) {
	// skip <UID>.<PART> forwards
	if (!preg_match('/^\d+\.[0-9.]+$/', implode(',', (array) $uids))) {
	$RCMAIL->storage->set_flag($uids, 'FORWARDED', $mbox);
	}
	}
	}
	}

	// Determine which folder to save message
	if ($savedraft) {
	$store_target = $drafts_mbox;
	}
	else if (!$RCMAIL->config->get('no_save_sent_messages')) {
	if (isset($_POST['_store_target'])) {
	$store_target = rcube_utils::get_input_value('_store_target', rcube_utils::INPUT_POST);
	}
	else {
	$store_target = $RCMAIL->config->get('sent_mbox');
	}
	}

	if ($store_target) {
	// check if folder is subscribed
	if ($RCMAIL->storage->folder_exists($store_target, true)) {
	$store_folder = true;
	}
	// folder may be existing but not subscribed (#1485241)
	else if (!$RCMAIL->storage->folder_exists($store_target)) {
	$store_folder = $RCMAIL->storage->create_folder($store_target, true);
	}
	else if ($RCMAIL->storage->subscribe($store_target)) {
	$store_folder = true;
	}

	// append message to sent box
	if ($store_folder) {
	// message body in file
	if ($mailbody_file \|\| $MAIL_MIME->getParam('delay_file_io')) {
	$headers = $MAIL_MIME->txtHeaders();

	// file already created
	if ($mailbody_file) {
	$msg = $mailbody_file;
	}
	else {
	$temp_dir = $RCMAIL->config->get('temp_dir');
	$mailbody_file = tempnam($temp_dir, 'rcmMsg');
	$msg = $MAIL_MIME->saveMessageBody($mailbody_file);

	if (!is_a($msg, 'PEAR_Error')) {
	$msg = $mailbody_file;
	}
	}
	}
	else {
	$msg = $MAIL_MIME->getMessage();
	$headers = '';
	}

	if (is_a($msg, 'PEAR_Error')) {
	rcube::raise_error(array('code' => 650, 'type' => 'php',
	'file' => __FILE__, 'line' => __LINE__,
	'message' => "Could not create message: ".$msg->getMessage()),
	true, false);
	}
	else {
	$saved = $RCMAIL->storage->save_message($store_target, $msg, $headers,
	$mailbody_file ? true : false, array('SEEN'));
	}

	if ($mailbody_file) {
	unlink($mailbody_file);
	$mailbody_file = null;
	}
	}

	// raise error if saving failed
	if (!$saved) {
	rcube::raise_error(array('code' => 800, 'type' => 'imap',
	'file' => __FILE__, 'line' => __LINE__,
	'message' => "Could not save message in $store_target"), true, false);

	if ($savedraft) {
	$RCMAIL->display_server_error('errorsaving');

	// start the auto-save timer again
	$OUTPUT->command('auto_save_start');
	$OUTPUT->send('iframe');
	}
	}
	}
	// remove temp file
	else if ($mailbody_file) {
	unlink($mailbody_file);
	}

	// delete previous saved draft
	$old_id = rcube_utils::get_input_value('_draft_saveid', rcube_utils::INPUT_POST);
	if ($old_id && ($sent \|\| $saved)) {
	$deleted = $RCMAIL->storage->delete_message($old_id, $drafts_mbox);

	// raise error if deletion of old draft failed
	if (!$deleted) {
	rcube::raise_error(array('code' => 800, 'type' => 'imap',
	'file' => __FILE__, 'line' => __LINE__,
	'message' => "Could not delete message from $drafts_mbox"), true, false);
	}
	}

	if ($savedraft) {
	// remember new draft-uid ($saved could be an UID or true/false here)
	if ($saved && is_bool($saved)) {
	$index = $RCMAIL->storage->search_once($drafts_mbox, 'HEADER Message-ID ' . $message_id);
	$saved = @max($index->get());
	}

	if ($saved) {
	$plugin = $RCMAIL->plugins->exec_hook('message_draftsaved',
	array('msgid' => $message_id, 'uid' => $saved, 'folder' => $store_target));

	// display success
	$OUTPUT->show_message($plugin['message'] ?: 'messagesaved', 'confirmation');

	// update "_draft_saveid" and the "cmp_hash" to prevent "Unsaved changes" warning
	$COMPOSE['param']['draft_uid'] = $plugin['uid'];
	$OUTPUT->command('set_draft_id', $plugin['uid']);
	$OUTPUT->command('compose_field_hash', true);
	}

	// start the auto-save timer again
	$OUTPUT->command('auto_save_start');
	}
	else {
	// Collect folders which could contain the composed message,
	// we'll refresh the list if currently opened folder is one of them (#1490238)
	$folders = array();

	if (!$saveonly) {
	if (in_array($COMPOSE['mode'], array('reply', 'forward', 'draft'))) {
	$folders[] = $COMPOSE['mailbox'];
	}
	if (!empty($COMPOSE['param']['draft_uid']) && $drafts_mbox) {
	$folders[] = $drafts_mbox;
	}
	}

	if ($store_folder && !$saved) {
	$params = $saveonly ? null : array('prefix' => true);
	$RCMAIL->display_server_error('errorsavingsent', null, null, $params);
	if ($saveonly) {
	$OUTPUT->send('iframe');
	}

	$save_error = true;
	}
	else {
	rcmail_compose_cleanup($COMPOSE_ID);
	$OUTPUT->command('remove_compose_data', $COMPOSE_ID);

	if ($store_folder) {
	$folders[] = $store_target;
	}
	}

	$msg = $RCMAIL->gettext($saveonly ? 'successfullysaved' : 'messagesent');

	$OUTPUT->command('sent_successfully', 'confirmation', $msg, $folders, $save_error);
	}

	$OUTPUT->send('iframe');


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

	function rcmail_received_host($host)
	{
	$hostname = gethostbyaddr($host);

	$result = rcmail_encrypt_host($hostname);

	if ($host != $hostname) {
	$result .= ' (' . rcmail_encrypt_host($host) . ')';
	}

	return $result;
	}

	// encrypt host IP or hostname for Received header
	function rcmail_encrypt_host($host)
	{
	global $RCMAIL;

	if ($RCMAIL->config->get('http_received_header_encrypt')) {
	return $RCMAIL->encrypt($host);
	}

	if (!preg_match('/[^0-9:.]/', $host)) {
	return "[$host]";
	}

	return $host;
	}

	// get identity record
	function rcmail_get_identity($id)
	{
	global $RCMAIL, $message_charset;

	if ($sql_arr = $RCMAIL->user->get_identity($id)) {
	$out = $sql_arr;

	if ($message_charset != RCUBE_CHARSET) {
	foreach ($out as $k => $v) {
	$out[$k] = rcube_charset::convert($v, RCUBE_CHARSET, $message_charset);
	}
	}

	$out['mailto'] = $sql_arr['email'];
	$out['string'] = format_email_recipient($sql_arr['email'], $sql_arr['name']);

	return $out;
	}

	return false;
	}

	/**
	* Extract image attachments from HTML content (data URIs)
	*/
	function rcmail_extract_inline_images($mime_message, $from)
	{
	$body = $mime_message->getHTMLBody();
	$offset = 0;
	$list = array();
	$domain = 'localhost';
	$regexp = '#img[^>]+src=[\'"](data:([^;]*);base64,([a-z0-9+/=\r\n]+))([\'"])#i';

	if (preg_match_all($regexp, $body, $matches, PREG_OFFSET_CAPTURE)) {
	// get domain for the Content-ID, must be the same as in Mail_Mime::get()
	if (preg_match('#@([0-9a-zA-Z\-\.]+)#', $from, $m)) {
	$domain = $m[1];
	}

	foreach ($matches[1] as $idx => $m) {
	$data = preg_replace('/\r\n/', '', $matches[3][$idx][0]);
	$data = base64_decode($data);

	if (empty($data)) {
	continue;
	}

	$hash = md5($data) . '@' . $domain;
	$mime_type = $matches[2][$idx][0];
	$name = $list[$hash];

	if (empty($mime_type)) {
	$mime_type = rcube_mime::image_content_type($data);
	}

	// add the image to the MIME message
	if (!$name) {
	$ext = preg_replace('#^[^/]+/#', '', $mime_type);
	$name = substr($hash, 0, 8) . '.' . $ext;
	$list[$hash] = $name;

	$mime_message->addHTMLImage($data, $mime_type, $name, false, $hash);
	}

	$body = substr_replace($body, $name, $m[1] + $offset, strlen($m[0]));
	$offset += strlen($name) - strlen($m[0]);
	}
	}

	$mime_message->setHTMLBody($body);
	}

	/**
	* Parse and cleanup email address input (and count addresses)
	*
	* @param string Address input
	* @param boolean Do count recipients (saved in global $RECIPIENT_COUNT)
	* @param boolean Validate addresses (errors saved in global $EMAIL_FORMAT_ERROR)
	* @return string Canonical recipients string separated by comma
	*/
	function rcmail_email_input_format($mailto, $count=false, $check=true)
	{
	global $RCMAIL, $EMAIL_FORMAT_ERROR, $RECIPIENT_COUNT;

	// simplified email regexp, supporting quoted local part
	$email_regexp = '(\S+\|("[^"]+"))@\S+';

	$delim = ',;';
	$regexp = array("/[$delim]\s[\r\n]+/", '/[\r\n]+/', "/[$delim]\s\$/m", '/;/', '/(\S{1})(<'.$email_regexp.'>)/U');
	$replace = array(', ', ', ', '', ',', '\\1 \\2');

	// replace new lines and strip ending ', ', make address input more valid
	$mailto = trim(preg_replace($regexp, $replace, $mailto));
	$items = rcube_utils::explode_quoted_string("[$delim]", $mailto);
	$result = array();

	foreach ($items as $item) {
	$item = trim($item);
	// address in brackets without name (do nothing)
	if (preg_match('/^<'.$email_regexp.'>$/', $item)) {
	$item = rcube_utils::idn_to_ascii(trim($item, '<>'));
	$result[] = $item;
	}
	// address without brackets and without name (add brackets)
	else if (preg_match('/^'.$email_regexp.'$/', $item)) {
	$item = rcube_utils::idn_to_ascii($item);
	$result[] = $item;
	}
	// address with name (handle name)
	else if (preg_match('/<'.$email_regexp.'>$/', $item, $matches)) {
	$address = $matches[0];
	$name = trim(str_replace($address, '', $item));
	if ($name[0] == '"' && $name[count($name)-1] == '"') {
	$name = substr($name, 1, -1);
	}
	$name = stripcslashes($name);
	$address = rcube_utils::idn_to_ascii(trim($address, '<>'));
	$result[] = format_email_recipient($address, $name);
	$item = $address;
	}

	// check address format
	$item = trim($item, '<>');
	if ($item && $check && !rcube_utils::check_email($item)) {
	$EMAIL_FORMAT_ERROR = $item;
	return;
	}
	}

	if ($count) {
	$RECIPIENT_COUNT += count($result);
	}

	return implode(', ', $result);
	}


	function rcmail_generic_message_footer($isHtml)
	{
	global $RCMAIL;

	if ($isHtml && ($file = $RCMAIL->config->get('generic_message_footer_html'))) {
	$html_footer = true;
	}
	else {
	$file = $RCMAIL->config->get('generic_message_footer');
	$html_footer = false;
	}

	if ($file && realpath($file)) {
	// sanity check
	if (!preg_match('/\.(php\|ini\|conf)$/', $file) && strpos($file, '/etc/') === false) {
	$footer = file_get_contents($file);
	if ($isHtml && !$html_footer) {
	$t2h = new rcube_text2html($footer, false);
	$footer = $t2h->get_html();
	}
	return $footer;
	}
	}

	return false;
	}

	/**
	* clear message composing settings
	*/
	function rcmail_compose_cleanup($id)
	{
	if (!isset($_SESSION['compose_data_'.$id])) {
	return;
	}

	$rcmail = rcmail::get_instance();
	$rcmail->plugins->exec_hook('attachments_cleanup', array('group' => $id));
	$rcmail->session->remove('compose_data_'.$id);

	$_SESSION['last_compose_session'] = $id;
	}

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