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	<?php

	/*
	+-----------------------------------------------------------------------+
	\| program/steps/mail/func.inc \|
	\| \|
	\| This file is part of the Roundcube Webmail client \|
	\| Copyright (C) 2005-2010, Roundcube Dev. - Switzerland \|
	\| Licensed under the GNU GPL \|
	\| \|
	\| PURPOSE: \|
	\| Provide webmail functionality and GUI objects \|
	\| \|
	+-----------------------------------------------------------------------+
	\| Author: Thomas Bruederli <roundcube@gmail.com> \|
	+-----------------------------------------------------------------------+

	$Id$

	*/

	// setup some global vars used by mail steps
	$SENT_MBOX = $RCMAIL->config->get('sent_mbox');
	$DRAFTS_MBOX = $RCMAIL->config->get('drafts_mbox');
	$SEARCH_MODS_DEFAULT = array('*' => array('subject'=>1, 'from'=>1), $SENT_MBOX => array('subject'=>1, 'to'=>1), $DRAFTS_MBOX => array('subject'=>1, 'to'=>1));

	// Simplified for IDN in Unicode
	//$EMAIL_ADDRESS_PATTERN = '([a-z0-9][a-z0-9\-\.\+\_]@[a-z0-9][a-z0-9\-\.]\\.[a-z]{2,5})';
	$EMAIL_ADDRESS_PATTERN = '([a-z0-9][a-z0-9\-\.\+\_]@[^&@"\'.][^@&"\']\\.[a-z]{2,5})';

	// actions that do not require imap connection here
	$NOIMAP_ACTIONS = array('addcontact', 'autocomplete', 'upload', 'display-attachment', 'remove-attachment', 'get');

	// always instantiate imap object (but not yet connect to server)
	$RCMAIL->imap_init();

	// log in to imap server
	if (!in_array($RCMAIL->action, $NOIMAP_ACTIONS) && !$RCMAIL->imap_connect()) {
	$RCMAIL->kill_session();

	if ($OUTPUT->ajax_call)
	$OUTPUT->redirect(array(), 2000);

	$OUTPUT->set_env('task', 'login');
	$OUTPUT->send('login');
	}

	// set imap properties and session vars
	if ($mbox = get_input_value('_mbox', RCUBE_INPUT_GPC))
	$IMAP->set_mailbox(($_SESSION['mbox'] = $mbox));
	else if ($IMAP)
	$_SESSION['mbox'] = $IMAP->get_mailbox_name();

	if (!empty($_GET['_page']))
	$IMAP->set_page(($_SESSION['page'] = intval($_GET['_page'])));

	// set default sort col/order to session
	if (!isset($_SESSION['sort_col']))
	$_SESSION['sort_col'] = $CONFIG['message_sort_col'];
	if (!isset($_SESSION['sort_order']))
	$_SESSION['sort_order'] = $CONFIG['message_sort_order'];

	// set threads mode
	$a_threading = $RCMAIL->config->get('message_threading', array());
	if (isset($_GET['_threads'])) {
	if ($_GET['_threads'])
	$a_threading[$_SESSION['mbox']] = true;
	else
	unset($a_threading[$_SESSION['mbox']]);
	$RCMAIL->user->save_prefs(array('message_threading' => $a_threading));
	}
	$IMAP->set_threading($a_threading[$_SESSION['mbox']]);

	// set message set for search result
	if (!empty($_REQUEST['_search']) && isset($_SESSION['search'])
	&& $_SESSION['search_request'] == $_REQUEST['_search']
	) {
	$IMAP->set_search_set($_SESSION['search']);
	$OUTPUT->set_env('search_request', $_REQUEST['_search']);
	$OUTPUT->set_env('search_text', $_SESSION['last_text_search']);
	}

	// set main env variables, labels and page title
	if (empty($RCMAIL->action) \|\| $RCMAIL->action == 'list') {
	$mbox_name = $IMAP->get_mailbox_name();

	if (empty($RCMAIL->action)) {
	// initialize searching result if search_filter is used
	if ($_SESSION['search_filter'] && $_SESSION['search_filter'] != 'ALL') {
	$search_request = md5($mbox_name.$_SESSION['search_filter']);

	$IMAP->search($mbox_name, $_SESSION['search_filter'], RCMAIL_CHARSET, $_SESSION['sort_col']);
	$_SESSION['search'] = $IMAP->get_search_set();
	$_SESSION['search_request'] = $search_request;
	$OUTPUT->set_env('search_request', $search_request);
	}

	$search_mods = $RCMAIL->config->get('search_mods', $SEARCH_MODS_DEFAULT);
	$OUTPUT->set_env('search_mods', $search_mods);
	}

	// set current mailbox and some other vars in client environment
	$OUTPUT->set_env('mailbox', $mbox_name);
	$OUTPUT->set_env('pagesize', $IMAP->page_size);
	$OUTPUT->set_env('quota', $IMAP->get_capability('quota'));
	$OUTPUT->set_env('delimiter', $IMAP->get_hierarchy_delimiter());
	$OUTPUT->set_env('threading', (bool) $IMAP->threading);
	$OUTPUT->set_env('threads', $IMAP->threading
	\|\| $IMAP->get_capability('thread=references')
	\|\| $IMAP->get_capability('thread=orderedsubject')
	\|\| $IMAP->get_capability('thread=refs')
	);

	if ($CONFIG['flag_for_deletion'])
	$OUTPUT->set_env('flag_for_deletion', true);
	if ($CONFIG['read_when_deleted'])
	$OUTPUT->set_env('read_when_deleted', true);
	if ($CONFIG['skip_deleted'])
	$OUTPUT->set_env('skip_deleted', true);
	if ($CONFIG['display_next'])
	$OUTPUT->set_env('display_next', true);

	$OUTPUT->set_env('preview_pane_mark_read', $RCMAIL->config->get('preview_pane_mark_read', 0));

	if ($CONFIG['trash_mbox'])
	$OUTPUT->set_env('trash_mailbox', $CONFIG['trash_mbox']);
	if ($CONFIG['drafts_mbox'])
	$OUTPUT->set_env('drafts_mailbox', $CONFIG['drafts_mbox']);
	if ($CONFIG['junk_mbox'])
	$OUTPUT->set_env('junk_mailbox', $CONFIG['junk_mbox']);

	if (!$OUTPUT->ajax_call)
	$OUTPUT->add_label('checkingmail', 'deletemessage', 'movemessagetotrash',
	'movingmessage', 'copyingmessage', 'copy', 'move', 'quota');

	$OUTPUT->set_pagetitle(rcmail_localize_foldername($mbox_name));
	}


	/**
	* return the message list as HTML table
	*/
	function rcmail_message_list($attrib)
	{
	global $IMAP, $CONFIG, $OUTPUT;

	// add some labels to client
	$OUTPUT->add_label('from', 'to');

	// add id to message list table if not specified
	if (!strlen($attrib['id']))
	$attrib['id'] = 'rcubemessagelist';

	// define list of cols to be displayed based on parameter or config
	if (empty($attrib['columns'])) {
	$a_show_cols = is_array($CONFIG['list_cols']) ? $CONFIG['list_cols'] : array('subject');
	$OUTPUT->set_env('col_movable', !in_array('list_cols', (array)$CONFIG['dont_override']));
	}
	else {
	$a_show_cols = preg_split('/[\s,;]+/', strip_quotes($attrib['columns']));
	$attrib['columns'] = $a_show_cols;
	}

	// save some variables for use in ajax list
	$_SESSION['list_attrib'] = $attrib;

	$mbox = $IMAP->get_mailbox_name();
	$delim = $IMAP->get_hierarchy_delimiter();

	// show 'to' instead of 'from' in sent/draft messages
	if ((strpos($mbox.$delim, $CONFIG['sent_mbox'].$delim)===0 \|\| strpos($mbox.$delim, $CONFIG['drafts_mbox'].$delim)===0)
	&& (($f = array_search('from', $a_show_cols)) !== false) && array_search('to', $a_show_cols) === false)
	$a_show_cols[$f] = 'to';

	// make sure 'threads' and 'subject' columns are present
	if (!in_array('subject', $a_show_cols))
	array_unshift($a_show_cols, 'subject');
	if (!in_array('threads', $a_show_cols))
	array_unshift($a_show_cols, 'threads');

	$skin_path = $_SESSION['skin_path'] = $CONFIG['skin_path'];

	// set client env
	$OUTPUT->add_gui_object('messagelist', $attrib['id']);
	$OUTPUT->set_env('autoexpand_threads', intval($CONFIG['autoexpand_threads']));
	$OUTPUT->set_env('sort_col', $_SESSION['sort_col']);
	$OUTPUT->set_env('sort_order', $_SESSION['sort_order']);
	$OUTPUT->set_env('messages', array());
	$OUTPUT->set_env('coltypes', $a_show_cols);

	$OUTPUT->include_script('list.js');

	$thead = '';
	foreach (rcmail_message_list_head($attrib, $a_show_cols) as $cell)
	$thead .= html::tag('td', array('class' => $cell['className'], 'id' => $cell['id']), $cell['html']);

	return html::tag('table',
	$attrib,
	html::tag('thead', null, html::tag('tr', null, $thead)) .
	html::tag('tbody', null, ''),
	array('style', 'class', 'id', 'cellpadding', 'cellspacing', 'border', 'summary'));
	}


	/**
	* return javascript commands to add rows to the message list
	*/
	function rcmail_js_message_list($a_headers, $insert_top=FALSE, $a_show_cols=null)
	{
	global $CONFIG, $IMAP, $RCMAIL, $OUTPUT;

	if (empty($a_show_cols)) {
	if (!empty($_SESSION['list_attrib']['columns']))
	$a_show_cols = $_SESSION['list_attrib']['columns'];
	else
	$a_show_cols = is_array($CONFIG['list_cols']) ? $CONFIG['list_cols'] : array('subject');
	}
	else {
	if (!is_array($a_show_cols))
	$a_show_cols = preg_split('/[\s,;]+/', strip_quotes($a_show_cols));
	$head_replace = true;
	}

	$mbox = $IMAP->get_mailbox_name();
	$delim = $IMAP->get_hierarchy_delimiter();

	// make sure 'threads' and 'subject' columns are present
	if (!in_array('subject', $a_show_cols))
	array_unshift($a_show_cols, 'subject');
	if (!in_array('threads', $a_show_cols))
	array_unshift($a_show_cols, 'threads');

	$_SESSION['list_attrib']['columns'] = $a_show_cols;

	// show 'to' instead of 'from' in sent/draft messages
	if ((strpos($mbox.$delim, $CONFIG['sent_mbox'].$delim)===0 \|\| strpos($mbox.$delim, $CONFIG['drafts_mbox'].$delim)===0)
	&& (($f = array_search('from', $a_show_cols)) !== false) && array_search('to', $a_show_cols) === false)
	$a_show_cols[$f] = 'to';

	// Make sure there are no duplicated columns (#1486999)
	$a_show_cols = array_unique($a_show_cols);

	// Plugins may set header's list_cols/list_flags and other rcube_mail_header variables
	// and list columns
	$plugin = $RCMAIL->plugins->exec_hook('messages_list',
	array('messages' => $a_headers, 'cols' => $a_show_cols));

	$a_show_cols = $plugin['cols'];
	$a_headers = $plugin['messages'];

	$thead = $head_replace ? rcmail_message_list_head($_SESSION['list_attrib'], $a_show_cols) : NULL;

	$OUTPUT->command('set_message_coltypes', $a_show_cols, $thead);

	if (empty($a_headers))
	return;

	// remove 'threads', 'attachment', 'flag' columns, we don't need them here
	if (($key = array_search('attachment', $a_show_cols)) !== FALSE)
	unset($a_show_cols[$key]);
	if (($key = array_search('flag', $a_show_cols)) !== FALSE)
	unset($a_show_cols[$key]);
	if (($key = array_search('threads', $a_show_cols)) !== FALSE)
	unset($a_show_cols[$key]);
	// loop through message headers

	foreach ($a_headers as $n => $header)
	{
	if (empty($header))
	continue;

	$a_msg_cols = array();
	$a_msg_flags = array();

	$IMAP->set_charset(!empty($header->charset) ? $header->charset : $CONFIG['default_charset']);

	// format each col; similar as in rcmail_message_list()
	foreach ($a_show_cols as $col)
	{
	if (in_array($col, array('from', 'to', 'cc', 'replyto')))
	$cont = Q(rcmail_address_string($header->$col, 3), 'show');
	else if ($col=='subject')
	{
	$cont = abbreviate_string(trim($IMAP->decode_header($header->$col)), 160);
	if (!$cont) $cont = rcube_label('nosubject');
	$cont = Q($cont);
	}
	else if ($col=='size')
	$cont = show_bytes($header->$col);
	else if ($col=='date')
	$cont = format_date($header->date);
	else
	$cont = Q($header->$col);

	$a_msg_cols[$col] = $cont;
	}

	if ($header->depth)
	$a_msg_flags['depth'] = $header->depth;
	else if ($header->has_children)
	$roots[] = $header->uid;
	if ($header->parent_uid)
	$a_msg_flags['parent_uid'] = $header->parent_uid;
	if ($header->has_children)
	$a_msg_flags['has_children'] = $header->has_children;
	if ($header->unread_children)
	$a_msg_flags['unread_children'] = $header->unread_children;
	if ($header->deleted)
	$a_msg_flags['deleted'] = 1;
	if (!$header->seen)
	$a_msg_flags['unread'] = 1;
	if ($header->answered)
	$a_msg_flags['replied'] = 1;
	if ($header->forwarded)
	$a_msg_flags['forwarded'] = 1;
	if ($header->flagged)
	$a_msg_flags['flagged'] = 1;
	if ($header->others['list-post'])
	$a_msg_flags['ml'] = 1;

	$a_msg_flags['ctype'] = Q($header->ctype);
	$a_msg_flags['mbox'] = $mbox;

	// merge with plugin result
	if (!empty($header->list_flags) && is_array($header->list_flags))
	$a_msg_flags = array_merge($a_msg_flags, $header->list_flags);
	if (!empty($header->list_cols) && is_array($header->list_cols))
	$a_msg_cols = array_merge($a_msg_cols, $header->list_cols);

	$OUTPUT->command('add_message_row',
	$header->uid,
	$a_msg_cols,
	$a_msg_flags,
	$insert_top);
	}

	if ($IMAP->threading) {
	$OUTPUT->command('init_threads', (array) $roots);
	}
	}


	/*
	* Creates <THEAD> for message list table
	*/
	function rcmail_message_list_head($attrib, $a_show_cols)
	{
	global $CONFIG;

	$skin_path = $_SESSION['skin_path'];
	$image_tag = html::img(array('src' => "%s%s", 'alt' => "%s"));

	// check to see if we have some settings for sorting
	$sort_col = $_SESSION['sort_col'];
	$sort_order = $_SESSION['sort_order'];

	// define sortable columns
	$a_sort_cols = array('subject', 'date', 'from', 'to', 'size', 'cc');

	if (!empty($attrib['optionsmenuicon'])) {
	$onclick = 'return ' . JS_OBJECT_NAME . ".command('menu-open', 'messagelistmenu')";
	if ($attrib['optionsmenuicon'] === true \|\| $attrib['optionsmenuicon'] == 'true')
	$list_menu = html::div(array('onclick' => $onclick, 'class' => 'listmenu',
	'id' => 'listmenulink', 'title' => rcube_label('listoptions')));
	else
	$list_menu = html::a(array('href' => '#', 'onclick' => $onclick),
	html::img(array('src' => $skin_path . $attrib['optionsmenuicon'],
	'id' => 'listmenulink', 'title' => rcube_label('listoptions')))
	);
	}
	else
	$list_menu = '';

	$cells = array();

	foreach ($a_show_cols as $col) {
	// get column name
	switch ($col) {
	case 'flag':
	$col_name = '<span class="flagged"> </span>';
	break;
	case 'attachment':
	$col_name = '<span class="attachment"> </span>';
	break;
	case 'threads':
	$col_name = $list_menu;
	break;
	default:
	$col_name = Q(rcube_label($col));
	}

	// make sort links
	if (in_array($col, $a_sort_cols))
	$col_name = html::a(array('href'=>"./#sort", 'onclick' => 'return '.JS_OBJECT_NAME.".command('sort','".$col."',this)", 'title' => rcube_label('sortby')), $col_name);

	$sort_class = $col == $sort_col ? " sorted$sort_order" : '';
	$class_name = $col.$sort_class;

	// put it all together
	$cells[] = array('className' => $class_name, 'id' => "rcm$col", 'html' => $col_name);
	}

	return $cells;
	}


	/**
	* return an HTML iframe for loading mail content
	*/
	function rcmail_messagecontent_frame($attrib)
	{
	global $OUTPUT, $RCMAIL;

	if (empty($attrib['id']))
	$attrib['id'] = 'rcmailcontentwindow';

	$attrib['name'] = $attrib['id'];

	if ($RCMAIL->config->get('preview_pane'))
	$OUTPUT->set_env('contentframe', $attrib['id']);
	$OUTPUT->set_env('blankpage', $attrib['src'] ? $OUTPUT->abs_url($attrib['src']) : 'program/blank.gif');

	return html::iframe($attrib);
	}


	function rcmail_messagecount_display($attrib)
	{
	global $IMAP, $OUTPUT;

	if (!$attrib['id'])
	$attrib['id'] = 'rcmcountdisplay';

	$OUTPUT->add_gui_object('countdisplay', $attrib['id']);

	return html::span($attrib, rcmail_get_messagecount_text());
	}


	function rcmail_quota_display($attrib)
	{
	global $OUTPUT;

	if (!$attrib['id'])
	$attrib['id'] = 'rcmquotadisplay';

	if(isset($attrib['display']))
	$_SESSION['quota_display'] = $attrib['display'];

	$OUTPUT->add_gui_object('quotadisplay', $attrib['id']);

	$quota = rcmail_quota_content($attrib);

	$OUTPUT->add_script('$(document).ready(function(){
	rcmail.set_quota('.json_serialize($quota).')});', 'foot');

	return html::span($attrib, '');
	}


	function rcmail_quota_content($attrib=NULL)
	{
	global $COMM_PATH, $RCMAIL;

	$quota = $RCMAIL->imap->get_quota();
	$quota = $RCMAIL->plugins->exec_hook('quota', $quota);

	$quota_result = (array) $quota;
	$quota_result['type'] = isset($_SESSION['quota_display']) ? $_SESSION['quota_display'] : '';

	if (!$quota['total'] && $RCMAIL->config->get('quota_zero_as_unlimited')) {
	$quota_result['title'] = rcube_label('unlimited');
	$quota_result['percent'] = 0;
	}
	else if ($quota['total']) {
	if (!isset($quota['percent']))
	$quota_result['percent'] = min(100, round(($quota['used']/max(1,$quota['total']))*100));

	$title = sprintf('%s / %s (%.0f%%)',
	show_bytes($quota['used'] * 1024), show_bytes($quota['total'] * 1024),
	$quota_result['percent']);

	$quota_result['title'] = $title;

	if ($attrib['width'])
	$quota_result['width'] = $attrib['width'];
	if ($attrib['height'])
	$quota_result['height'] = $attrib['height'];
	}
	else {
	$quota_result['title'] = rcube_label('unknown');
	$quota_result['percent'] = 0;
	}

	return $quota_result;
	}


	function rcmail_get_messagecount_text($count=NULL, $page=NULL)
	{
	global $RCMAIL, $IMAP, $MESSAGE;

	if (isset($MESSAGE->index))
	{
	return rcube_label(array('name' => 'messagenrof',
	'vars' => array('nr' => $MESSAGE->index+1,
	'count' => $count!==NULL ? $count : $IMAP->messagecount(NULL, 'ALL')))); // Only messages, no threads here
	}

	if ($page===NULL)
	$page = $IMAP->list_page;

	$start_msg = ($page-1) * $IMAP->page_size + 1;

	if ($count!==NULL)
	$max = $count;
	else if ($RCMAIL->action)
	$max = $IMAP->messagecount(NULL, $IMAP->threading ? 'THREADS' : 'ALL');

	if ($max==0)
	$out = rcube_label('mailboxempty');
	else
	$out = rcube_label(array('name' => $IMAP->threading ? 'threadsfromto' : 'messagesfromto',
	'vars' => array('from' => $start_msg,
	'to' => min($max, $start_msg + $IMAP->page_size - 1),
	'count' => $max)));

	return Q($out);
	}


	function rcmail_mailbox_name_display($attrib)
	{
	global $RCMAIL;

	if (!$attrib['id'])
	$attrib['id'] = 'rcmmailboxname';

	$RCMAIL->output->add_gui_object('mailboxname', $attrib['id']);

	return html::span($attrib, rcmail_get_mailbox_name_text());
	}


	function rcmail_get_mailbox_name_text()
	{
	global $RCMAIL;
	return rcmail_localize_foldername($RCMAIL->imap->get_mailbox_name());
	}


	function rcmail_send_unread_count($mbox_name, $force=false, $count=null)
	{
	global $RCMAIL;

	$old_unseen = $_SESSION['unseen_count'][$mbox_name];

	if ($count === null)
	$unseen = $RCMAIL->imap->messagecount($mbox_name, 'UNSEEN', $force);
	else
	$unseen = $count;

	if ($unseen != $old_unseen \|\| ($mbox_name == 'INBOX'))
	$RCMAIL->output->command('set_unread_count', $mbox_name, $unseen, ($mbox_name == 'INBOX'));

	// @TODO: this data is doubled (session and cache tables) if caching is enabled
	$_SESSION['unseen_count'][$mbox_name] = $unseen;

	return $unseen;
	}


	/**
	* Sets message is_safe flag according to 'show_images' option value
	*
	* @param object rcube_message Message
	*/
	function rcmail_check_safe(&$message)
	{
	global $RCMAIL;

	$show_images = $RCMAIL->config->get('show_images');
	if (!$message->is_safe
	&& !empty($show_images)
	&& $message->has_html_part())
	{
	switch($show_images) {
	case '1': // known senders only
	$CONTACTS = new rcube_contacts($RCMAIL->db, $_SESSION['user_id']);
	if ($CONTACTS->search('email', $message->sender['mailto'], true, false)->count) {
	$message->set_safe(true);
	}
	break;
	case '2': // always
	$message->set_safe(true);
	break;
	}
	}
	}


	/**
	* Cleans up the given message HTML Body (for displaying)
	*
	* @param string HTML
	* @param array Display parameters
	* @param array CID map replaces (inline images)
	* @return string Clean HTML
	*/
	function rcmail_wash_html($html, $p = array(), $cid_replaces)
	{
	global $REMOTE_OBJECTS;

	$p += array('safe' => false, 'inline_html' => true);

	// special replacements (not properly handled by washtml class)
	$html_search = array(
	'/(<\/nobr>)(\s+)(<nobr>)/i', // space(s) between <NOBR>
	'/<title[^>]>.<\/title>/i', // PHP bug #32547 workaround: remove title tag
	'/^(\0\0\xFE\xFF\|\xFF\xFE\0\0\|\xFE\xFF\|\xFF\xFE\|\xEF\xBB\xBF)/', // byte-order mark (only outlook?)
	'/<html\s[^>]+>/i', // washtml/DOMDocument cannot handle xml namespaces
	);
	$html_replace = array(
	'\\1'.'   '.'\\3',
	'',
	'',
	'<html>',
	);
	$html = preg_replace($html_search, $html_replace, $html);

	// PCRE errors handling (#1486856), should we use something like for every preg_* use?
	if ($html === null && ($preg_error = preg_last_error()) != PREG_NO_ERROR) {
	$errstr = "Could not clean up HTML message! PCRE Error: $preg_error.";

	if ($preg_error == PREG_BACKTRACK_LIMIT_ERROR)
	$errstr .= " Consider raising pcre.backtrack_limit!";
	if ($preg_error == PREG_RECURSION_LIMIT_ERROR)
	$errstr .= " Consider raising pcre.recursion_limit!";

	raise_error(array('code' => 600, 'type' => 'php',
	'line' => __LINE__, 'file' => __FILE__,
	'message' => $errstr), true, false);
	return '';
	}

	// fix (unknown/malformed) HTML tags before "wash"
	$html = preg_replace_callback('/(<[\/]*)([^\s>]+)/', 'rcmail_html_tag_callback', $html);

	// charset was converted to UTF-8 in rcube_imap::get_message_part(),
	// -> change charset specification in HTML accordingly
	$charset_pattern = '(<meta\s+[^>]content=)[\'"]?(\w+\/\w+;\scharset=)([a-z0-9-_]+[\'"]?)';
	if (preg_match("/$charset_pattern/Ui", $html)) {
	$html = preg_replace("/$charset_pattern/i", '\\1"\\2'.RCMAIL_CHARSET.'"', $html);
	}
	else {
	// add meta content-type to malformed messages, washtml cannot work without that
	if (!preg_match('/<head[^>]>(.)<\/head>/Uims', $html))
	$html = '<head></head>'. $html;
	$html = substr_replace($html, '<meta http-equiv="Content-Type" content="text/html; charset='.RCMAIL_CHARSET.'" />', intval(stripos($html, '<head>')+6), 0);
	}
	// turn relative into absolute urls
	$html = rcmail_resolve_base($html);

	// clean HTML with washhtml by Frederic Motte
	$wash_opts = array(
	'show_washed' => false,
	'allow_remote' => $p['safe'],
	'blocked_src' => "./program/blocked.gif",
	'charset' => RCMAIL_CHARSET,
	'cid_map' => $cid_replaces,
	'html_elements' => array('body'),
	);

	if (!$p['inline_html']) {
	$wash_opts['html_elements'] = array('html','head','title','body');
	}
	if ($p['safe']) {
	$wash_opts['html_elements'][] = 'link';
	$wash_opts['html_attribs'] = array('rel','type');
	}

	// overwrite washer options with options from plugins
	if (isset($p['html_elements']))
	$wash_opts['html_elements'] = $p['html_elements'];
	if (isset($p['html_attribs']))
	$wash_opts['html_attribs'] = $p['html_attribs'];

	// initialize HTML washer
	$washer = new washtml($wash_opts);

	if (!$p['skip_washer_form_callback'])
	$washer->add_callback('form', 'rcmail_washtml_callback');

	// allow CSS styles, will be sanitized by rcmail_washtml_callback()
	if (!$p['skip_washer_style_callback'])
	$washer->add_callback('style', 'rcmail_washtml_callback');

	$html = $washer->wash($html);
	$REMOTE_OBJECTS = $washer->extlinks;

	return $html;
	}


	/**
	* Convert the given message part to proper HTML
	* which can be displayed the message view
	*
	* @param object rcube_message_part Message part
	* @param array Display parameters array
	* @return string Formatted HTML string
	*/
	function rcmail_print_body($part, $p = array())
	{
	global $RCMAIL;

	// trigger plugin hook
	$data = $RCMAIL->plugins->exec_hook('message_part_before',
	array('type' => $part->ctype_secondary, 'body' => $part->body) + $p + array('safe' => false, 'plain' => false, 'inline_html' => true));

	// convert html to text/plain
	if ($data['type'] == 'html' && $data['plain']) {
	$txt = new html2text($data['body'], false, true);
	$body = $txt->get_text();
	$part->ctype_secondary = 'plain';
	}
	// text/html
	else if ($data['type'] == 'html') {
	$body = rcmail_wash_html($data['body'], $data, $part->replaces);
	$part->ctype_secondary = $data['type'];
	}
	// text/enriched
	else if ($data['type'] == 'enriched') {
	$part->ctype_secondary = 'html';
	require_once('lib/enriched.inc');
	$body = Q(enriched_to_html($data['body']), 'show');
	}
	else {
	// assert plaintext
	$body = $part->body;
	$part->ctype_secondary = $data['type'] = 'plain';
	}

	// free some memory (hopefully)
	unset($data['body']);

	// plaintext postprocessing
	if ($part->ctype_secondary == 'plain')
	$body = rcmail_plain_body($body, $part->ctype_parameters['format'] == 'flowed');

	// allow post-processing of the message body
	$data = $RCMAIL->plugins->exec_hook('message_part_after', array('type' => $part->ctype_secondary, 'body' => $body) + $data);

	return $data['type'] == 'html' ? $data['body'] : html::tag('pre', array(), $data['body']);
	}


	/**
	* Handle links and citation marks in plain text message
	*
	* @param string Plain text string
	* @param boolean Text uses format=flowed
	*
	* @return string Formatted HTML string
	*/
	function rcmail_plain_body($body, $flowed=false)
	{
	global $RCMAIL;

	// make links and email-addresses clickable
	$replacer = new rcube_string_replacer;

	// search for patterns like links and e-mail addresses
	$body = preg_replace_callback($replacer->link_pattern, array($replacer, 'link_callback'), $body);
	$body = preg_replace_callback($replacer->mailto_pattern, array($replacer, 'mailto_callback'), $body);

	// split body into single lines
	$a_lines = preg_split('/\r?\n/', $body);
	$quote_level = 0;
	$last = -1;

	// find/mark quoted lines...
	for ($n=0, $cnt=count($a_lines); $n < $cnt; $n++) {
	if ($a_lines[$n][0] == '>' && preg_match('/^(>+\s*)+/', $a_lines[$n], $regs)) {
	$q = strlen(preg_replace('/\s/', '', $regs[0]));
	$a_lines[$n] = substr($a_lines[$n], strlen($regs[0]));

	if ($q > $quote_level)
	$a_lines[$n] = $replacer->get_replacement($replacer->add(
	str_repeat('<blockquote>', $q - $quote_level))) . $a_lines[$n];
	else if ($q < $quote_level)
	$a_lines[$n] = $replacer->get_replacement($replacer->add(
	str_repeat('</blockquote>', $quote_level - $q))) . $a_lines[$n];
	else if ($flowed) {
	// previous line is flowed
	if (isset($a_lines[$last]) && $a_lines[$n]
	&& $a_lines[$last][strlen($a_lines[$last])-1] == ' ') {
	// merge lines
	$a_lines[$last] .= $a_lines[$n];
	unset($a_lines[$n]);
	}
	else
	$last = $n;
	}
	}
	else {
	$q = 0;
	if ($flowed) {
	// sig separator - line is fixed
	if ($a_lines[$n] == '-- ') {
	$last = $n;
	}
	else {
	// remove space-stuffing
	if ($a_lines[$n][0] == ' ')
	$a_lines[$n] = substr($a_lines[$n], 1);

	// previous line is flowed?
	if (isset($a_lines[$last]) && $a_lines[$n]
	&& $a_lines[$last] != '-- '
	&& $a_lines[$last][strlen($a_lines[$last])-1] == ' '
	) {
	$a_lines[$last] .= $a_lines[$n];
	unset($a_lines[$n]);
	}
	else {
	$last = $n;
	}
	}
	if ($quote_level > 0)
	$a_lines[$last] = $replacer->get_replacement($replacer->add(
	str_repeat('</blockquote>', $quote_level))) . $a_lines[$last];
	}
	else if ($quote_level > 0)
	$a_lines[$n] = $replacer->get_replacement($replacer->add(
	str_repeat('</blockquote>', $quote_level))) . $a_lines[$n];
	}

	$quote_level = $q;
	}

	// quote plain text
	$body = Q(join("\n", $a_lines), 'dummy', false);

	// colorize signature (up to <sig_max_lines> lines)
	$len = strlen($body);
	$sig_max_lines = $RCMAIL->config->get('sig_max_lines', 15);
	while (($sp = strrpos($body, "-- \n", $sp ? -$len+$sp-1 : 0)) !== false) {
	if ($sp == 0 \|\| $body[$sp-1] == "\n") {
	// do not touch blocks with more that X lines
	if (substr_count($body, "\n", $sp) < $sig_max_lines)
	$body = substr($body, 0, max(0, $sp))
	.'<span class="sig">'.substr($body, $sp).'</span>';
	break;
	}
	}

	// insert url/mailto links and citation tags
	$body = $replacer->resolve($body);

	return $body;
	}


	/**
	* Callback function for washtml cleaning class
	*/
	function rcmail_washtml_callback($tagname, $attrib, $content)
	{
	switch ($tagname) {
	case 'form':
	$out = html::div('form', $content);
	break;

	case 'style':
	// decode all escaped entities and reduce to ascii strings
	$stripped = preg_replace('/[^a-zA-Z\(:]/', '', rcmail_xss_entity_decode($content));

	// now check for evil strings like expression, behavior or url()
	if (!preg_match('/expression\|behavior\|url\(\|import/', $stripped)) {
	$out = html::tag('style', array('type' => 'text/css'), $content);
	break;
	}

	default:
	$out = '';
	}

	return $out;
	}


	/**
	* Callback function for HTML tags fixing
	*/
	function rcmail_html_tag_callback($matches)
	{
	$tagname = $matches[2];

	$tagname = preg_replace(array(
	'/:.*$/', // Microsoft's Smart Tags <st1:xxxx>
	'/[^a-z0-9_\[\]\!-]/i', // forbidden characters
	), '', $tagname);

	return $matches[1].$tagname;
	}


	/**
	* return table with message headers
	*/
	function rcmail_message_headers($attrib, $headers=NULL)
	{
	global $IMAP, $OUTPUT, $MESSAGE, $PRINT_MODE, $RCMAIL;
	static $sa_attrib;

	// keep header table attrib
	if (is_array($attrib) && !$sa_attrib)
	$sa_attrib = $attrib;
	else if (!is_array($attrib) && is_array($sa_attrib))
	$attrib = $sa_attrib;

	if (!isset($MESSAGE))
	return FALSE;

	// get associative array of headers object
	if (!$headers)
	$headers = is_object($MESSAGE->headers) ? get_object_vars($MESSAGE->headers) : $MESSAGE->headers;

	// show these headers
	$standard_headers = array('subject', 'from', 'to', 'cc', 'bcc', 'replyto',
	'mail-reply-to', 'mail-followup-to', 'date');
	$output_headers = array();

	foreach ($standard_headers as $hkey) {
	if ($headers[$hkey])
	$value = $headers[$hkey];
	else if ($headers['others'][$hkey])
	$value = $headers['others'][$hkey];
	else
	continue;

	if ($hkey == 'date') {
	if ($PRINT_MODE)
	$header_value = format_date($value, $RCMAIL->config->get('date_long', 'x'));
	else
	$header_value = format_date($value);
	}
	else if ($hkey == 'replyto') {
	if ($headers['replyto'] != $headers['from'])
	$header_value = rcmail_address_string($value, null, true, $attrib['addicon']);
	else
	continue;
	}
	else if ($hkey == 'mail-reply-to') {
	if ($headers['mail-replyto'] != $headers['reply-to']
	&& $headers['reply-to'] != $headers['from']
	)
	$header_value = rcmail_address_string($value, null, true, $attrib['addicon']);
	else
	continue;
	}
	else if ($hkey == 'mail-followup-to') {
	$header_value = rcmail_address_string($value, null, true, $attrib['addicon']);
	}
	else if (in_array($hkey, array('from', 'to', 'cc', 'bcc')))
	$header_value = rcmail_address_string($value, null, true, $attrib['addicon']);
	else if ($hkey == 'subject' && empty($value))
	$header_value = rcube_label('nosubject');
	else
	$header_value = trim($IMAP->decode_header($value));

	$output_headers[$hkey] = array('title' => rcube_label($hkey), 'value' => $header_value, 'raw' => $value);
	}

	$plugin = $RCMAIL->plugins->exec_hook('message_headers_output', array('output' => $output_headers, 'headers' => $MESSAGE->headers));

	// compose html table
	$table = new html_table(array('cols' => 2));

	foreach ($plugin['output'] as $hkey => $row) {
	$table->add(array('class' => 'header-title'), Q($row['title']));
	$table->add(array('class' => $hkey, 'width' => "90%"), Q($row['value'], ($hkey == 'subject' ? 'strict' : 'show')));
	}

	// all headers division
	$table->add(array('colspan' => 2, 'class' => "more-headers show-headers", 'onclick' => "return ".JS_OBJECT_NAME.".command('load-headers','',this)"), '');
	$table->add_row(array('id' => "all-headers"));
	$table->add(array('colspan' => 2, 'class' => "all"), html::div(array('id' => 'headers-source'), ''));

	$OUTPUT->add_gui_object('all_headers_row', 'all-headers');
	$OUTPUT->add_gui_object('all_headers_box', 'headers-source');

	return $table->show($attrib);
	}


	/**
	* Handler for the 'messagebody' GUI object
	*
	* @param array Named parameters
	* @return string HTML content showing the message body
	*/
	function rcmail_message_body($attrib)
	{
	global $CONFIG, $OUTPUT, $MESSAGE, $IMAP, $RCMAIL, $REMOTE_OBJECTS;

	if (!is_array($MESSAGE->parts) && empty($MESSAGE->body))
	return '';

	if (!$attrib['id'])
	$attrib['id'] = 'rcmailMsgBody';

	$safe_mode = $MESSAGE->is_safe \|\| intval($_GET['_safe']);
	$out = '';

	$header_attrib = array();
	foreach ($attrib as $attr => $value)
	if (preg_match('/^headertable([a-z]+)$/i', $attr, $regs))
	$header_attrib[$regs[1]] = $value;

	if (!empty($MESSAGE->parts))
	{
	foreach ($MESSAGE->parts as $i => $part)
	{
	if ($part->type == 'headers')
	$out .= rcmail_message_headers(sizeof($header_attrib) ? $header_attrib : NULL, $part->headers);
	else if ($part->type == 'content' && $part->size)
	{
	if (empty($part->ctype_parameters) \|\| empty($part->ctype_parameters['charset']))
	$part->ctype_parameters['charset'] = $MESSAGE->headers->charset;

	// fetch part if not available
	if (!isset($part->body))
	$part->body = $MESSAGE->get_part_content($part->mime_id);

	// message is cached but not exists (#1485443), or other error
	if ($part->body === false) {
	rcmail_message_error($MESSAGE->uid);
	}

	$plugin = $RCMAIL->plugins->exec_hook('message_body_prefix', array(
	'part' => $part, 'prefix' => ''));

	$body = rcmail_print_body($part, array('safe' => $safe_mode, 'plain' => !$CONFIG['prefer_html']));

	if ($part->ctype_secondary == 'html') {
	$body = rcmail_html4inline($body, $attrib['id'], 'rcmBody', $attrs);
	$div_attr = array('class' => 'message-htmlpart');
	$style = array();

	if (!empty($attrs)) {
	foreach ($attrs as $a_idx => $a_val)
	$style[] = $a_idx . ': ' . $a_val;
	if (!empty($style))
	$div_attr['style'] = implode('; ', $style);
	}

	$out .= html::div($div_attr, $plugin['prefix'] . $body);
	}
	else
	$out .= html::div('message-part', $plugin['prefix'] . $body);
	}
	}
	}
	else {
	$plugin = $RCMAIL->plugins->exec_hook('message_body_prefix', array(
	'part' => $MESSAGE, 'prefix' => ''));

	$out .= html::div('message-part', $plugin['prefix'] . html::tag('pre', array(),
	rcmail_plain_body(Q($MESSAGE->body, 'strict', false))));
	}

	$ctype_primary = strtolower($MESSAGE->structure->ctype_primary);
	$ctype_secondary = strtolower($MESSAGE->structure->ctype_secondary);

	// list images after mail body
	if ($CONFIG['inline_images']
	&& $ctype_primary == 'multipart'
	&& !empty($MESSAGE->attachments))
	{
	foreach ($MESSAGE->attachments as $attach_prop) {
	// Content-Type: image/*...
	if (preg_match('/^image\//i', $attach_prop->mimetype) \|\|
	// ...or known file extension: many clients are using application/octet-stream
	($attach_prop->filename &&
	preg_match('/^application\/octet-stream$/i', $attach_prop->mimetype) &&
	preg_match('/\.(jpg\|jpeg\|png\|gif\|bmp)$/i', $attach_prop->filename))
	) {
	$out .= html::tag('hr') . html::p(array('align' => "center"),
	html::img(array(
	'src' => $MESSAGE->get_part_url($attach_prop->mime_id),
	'title' => $attach_prop->filename,
	'alt' => $attach_prop->filename,
	)));
	}
	}
	}

	// tell client that there are blocked remote objects
	if ($REMOTE_OBJECTS && !$safe_mode)
	$OUTPUT->set_env('blockedobjects', true);

	return html::div($attrib, $out);
	}


	/**
	* Convert all relative URLs according to a <base> in HTML
	*/
	function rcmail_resolve_base($body)
	{
	// check for <base href=...>
	if (preg_match('!(<base.*href=["\']?)([hftps]{3,5}://[a-z0-9/.%-]+)!i', $body, $regs)) {
	$replacer = new rcube_base_replacer($regs[2]);

	// replace all relative paths
	$body = preg_replace_callback('/(src\|background\|href)=(["\']?)([\.\/]+[^"\'\s]+)(\2\|\s\|>)/Ui', array($replacer, 'callback'), $body);
	$body = preg_replace_callback('/(url\s*$)(["\']?)([\.\/]+[^"\'$\s]+)(\2)\)/Ui', array($replacer, 'callback'), $body);
	}

	return $body;
	}

	/**
	* modify a HTML message that it can be displayed inside a HTML page
	*/
	function rcmail_html4inline($body, $container_id, $body_id='', &$attributes=null)
	{
	$last_style_pos = 0;
	$body_lc = strtolower($body);
	$cont_id = $container_id.($body_id ? ' div.'.$body_id : '');

	// find STYLE tags
	while (($pos = strpos($body_lc, '<style', $last_style_pos)) && ($pos2 = strpos($body_lc, '</style>', $pos)))
	{
	$pos = strpos($body_lc, '>', $pos)+1;

	// replace all css definitions with #container [def]
	$styles = rcmail_mod_css_styles(
	substr($body, $pos, $pos2-$pos), $cont_id);

	$body = substr($body, 0, $pos) . $styles . substr($body, $pos2);
	$body_lc = strtolower($body);
	$last_style_pos = $pos2;
	}

	// modify HTML links to open a new window if clicked
	$GLOBALS['rcmail_html_container_id'] = $container_id;
	$body = preg_replace_callback('/<(a\|link)\s+([^>]+)>/Ui', 'rcmail_alter_html_link', $body);
	unset($GLOBALS['rcmail_html_container_id']);

	$body = preg_replace(array(
	// add comments arround html and other tags
	'/(<!DOCTYPE[^>]*>)/i',
	'/(<\?xml[^>]*>)/i',
	'/(<\/?html[^>]*>)/i',
	'/(<\/?head[^>]*>)/i',
	'/(<title[^>]>.<\/title>)/Ui',
	'/(<\/?meta[^>]*>)/i',
	// quote <? of php and xml files that are specified as text/html
	'/<\?/',
	'/\?>/',
	// replace <body> with <div>
	'/<body([^>]*)>/i',
	'/<\/body>/i',
	),
	array(
	'<!--\\1-->',
	'<!--\\1-->',
	'<!--\\1-->',
	'<!--\\1-->',
	'<!--\\1-->',
	'<!--\\1-->',
	'<?',
	'?>',
	'<div class="'.$body_id.'"\\1>',
	'</div>',
	),
	$body);

	$attributes = array();

	// Handle body attributes that doesn't play nicely with div elements
	if (preg_match('/<div class="' . preg_quote($body_id, '/') . '" ([^>]+)/', $body, $m)) {
	$attrs = $m[0];
	// Get bgcolor, we'll set it as background-color of the message container
	if (preg_match('/bgcolor=["\']([a-z0-9#]+)["\']/', $attrs, $mb)) {
	$attributes['background-color'] = $mb[1];
	$attrs = preg_replace('/bgcolor=["\']([a-z0-9#]+)["\']/', '', $attrs);
	}
	// Get background, we'll set it as background-image of the message container
	if (preg_match('/background=["\']([^"\'>\s]+)["\']/', $attrs, $mb)) {
	$attributes['background-image'] = 'url('.$mb[1].')';
	$attrs = preg_replace('/background=["\']([^"\'>\s]+)["\']/', '', $attrs);
	}
	if (!empty($attributes))
	$body = preg_replace('/<div class="' . preg_quote($body_id, '/') . '" [^>]+/', rtrim($attrs), $body, 1);

	// handle body styles related to background image
	if ($attributes['background-image']) {
	// get body style
	if (preg_match('/#'.preg_quote($cont_id, '/').'\s+\{([^}]+)}/i', $body, $m)) {
	// get background related style
	if (preg_match_all('/(background-position\|background-repeat)\s:\s([^;]+);/i', $m[1], $ma, PREG_SET_ORDER)) {
	foreach ($ma as $style)
	$attributes[$style[1]] = $style[2];
	}
	}
	}
	}
	// make sure there's 'rcmBody' div, we need it for proper css modification
	// its name is hardcoded in rcmail_message_body() also
	else
	$body = '<div class="' . $body_id . '">' . $body . '</div>';

	return $body;
	}


	/**
	* parse link attributes and set correct target
	*/
	function rcmail_alter_html_link($matches)
	{
	global $EMAIL_ADDRESS_PATTERN;

	$tag = $matches[1];
	$attrib = parse_attrib_string($matches[2]);
	$end = '>';

	if ($tag == 'link' && preg_match('/^https?:\/\//i', $attrib['href'])) {
	$attrib['href'] = "?_task=utils&_action=modcss&u=" . urlencode($attrib['href'])
	. "&c=" . urlencode($GLOBALS['rcmail_html_container_id']);
	$end = ' />';
	}
	else if (preg_match('/^mailto:'.$EMAIL_ADDRESS_PATTERN.'(\?[^"\'>]+)?/i', $attrib['href'], $mailto)) {
	$attrib['href'] = $mailto[0];
	$attrib['onclick'] = sprintf(
	"return %s.command('compose','%s',this)",
	JS_OBJECT_NAME,
	JQ($mailto[1].$mailto[2]));
	}
	else if (!empty($attrib['href']) && $attrib['href'][0] != '#') {
	$attrib['target'] = '_blank';
	}

	return "<$tag" . html::attrib_string($attrib, array('href','name','target','onclick','id','class','style','title','rel','type','media')) . $end;
	}


	/**
	* decode address string and re-format it as HTML links
	*/
	function rcmail_address_string($input, $max=null, $linked=false, $addicon=null)
	{
	global $IMAP, $RCMAIL, $PRINT_MODE, $CONFIG;
	static $got_writable_abook = null;

	$a_parts = $IMAP->decode_address_list($input);

	if (!sizeof($a_parts))
	return $input;

	$c = count($a_parts);
	$j = 0;
	$out = '';

	if ($got_writable_abook === null && $books = $RCMAIL->get_address_sources(true)) {
	$got_writable_abook = true;
	}

	foreach ($a_parts as $part) {
	$j++;

	$name = $part['name'];
	$mailto = $part['mailto'];
	$string = $part['string'];

	// IDNA ASCII to Unicode
	if ($name == $mailto)
	$name = idn_to_utf8($name);
	if ($string == $mailto)
	$string = idn_to_utf8($string);
	$mailto = idn_to_utf8($mailto);

	if ($PRINT_MODE) {
	$out .= sprintf('%s <%s>', Q($name), $mailto);
	}
	else if (check_email($part['mailto'], false)) {
	if ($linked) {
	$out .= html::a(array(
	'href' => 'mailto:'.$mailto,
	'onclick' => sprintf("return %s.command('compose','%s',this)", JS_OBJECT_NAME, JQ($mailto)),
	'title' => $mailto,
	'class' => "rcmContactAddress",
	),
	Q($name ? $name : $mailto));
	}
	else {
	$out .= html::span(array('title' => $mailto, 'class' => "rcmContactAddress"),
	Q($name ? $name : $mailto));
	}

	if ($addicon && $got_writable_abook) {
	$out .= ' ' . html::a(array(
	'href' => "#add",
	'onclick' => sprintf("return %s.command('add-contact','%s',this)", JS_OBJECT_NAME, urlencode($string)),
	'title' => rcube_label('addtoaddressbook'),
	),
	html::img(array(
	'src' => $CONFIG['skin_path'] . $addicon,
	'alt' => "Add contact",
	)));
	}
	}
	else {
	if ($name)
	$out .= Q($name);
	if ($mailto)
	$out .= (strlen($out) ? ' ' : '') . sprintf('<%s>', Q($mailto));
	}

	if ($c>$j)
	$out .= ','.($max ? ' ' : ' ');

	if ($max && $j==$max && $c>$j) {
	$out .= '...';
	break;
	}
	}

	return $out;
	}


	/**
	* Wrap text to a given number of characters per line
	* but respect the mail quotation of replies messages (>).
	* Finally add another quotation level by prpending the lines
	* with >
	*
	* @param string Text to wrap
	* @param int The line width
	* @return string The wrapped text
	*/
	function rcmail_wrap_and_quote($text, $length = 72)
	{
	// Rebuild the message body with a maximum of $max chars, while keeping quoted message.
	$max = min(77, $length + 8);
	$lines = preg_split('/\r?\n/', trim($text));
	$out = '';

	foreach ($lines as $line) {
	// don't wrap already quoted lines
	if ($line[0] == '>')
	$line = '>' . rtrim($line);
	else if (mb_strlen($line) > $max) {
	$newline = '';
	foreach(explode("\n", rc_wordwrap($line, $length - 2)) as $l) {
	if (strlen($l))
	$newline .= '> ' . $l . "\n";
	else
	$newline .= ">\n";
	}
	$line = rtrim($newline);
	}
	else
	$line = '> ' . $line;

	// Append the line
	$out .= $line . "\n";
	}

	return $out;
	}


	function rcmail_draftinfo_encode($p)
	{
	$parts = array();
	foreach ($p as $key => $val)
	$parts[] = $key . '=' . ($key == 'folder' ? base64_encode($val) : $val);

	return join('; ', $parts);
	}


	function rcmail_draftinfo_decode($str)
	{
	$info = array();
	foreach (preg_split('/;\s+/', $str) as $part) {
	list($key, $val) = explode('=', $part, 2);
	if ($key == 'folder')
	$val = base64_decode($val);
	$info[$key] = $val;
	}

	return $info;
	}


	function rcmail_message_part_controls()
	{
	global $MESSAGE;

	$part = asciiwords(get_input_value('_part', RCUBE_INPUT_GPC));
	if (!is_object($MESSAGE) \|\| !is_array($MESSAGE->parts) \|\| !($_GET['_uid'] && $_GET['_part']) \|\| !$MESSAGE->mime_parts[$part])
	return '';

	$part = $MESSAGE->mime_parts[$part];
	$table = new html_table(array('cols' => 3));

	if (!empty($part->filename)) {
	$table->add('title', Q(rcube_label('filename')));
	$table->add(null, Q($part->filename));
	$table->add(null, '[' . html::a('?'.str_replace('_frame=', '_download=', $_SERVER['QUERY_STRING']), Q(rcube_label('download'))) . ']');
	}

	if (!empty($part->size)) {
	$table->add('title', Q(rcube_label('filesize')));
	$table->add(null, Q(show_bytes($part->size)));
	}

	return $table->show($attrib);
	}



	function rcmail_message_part_frame($attrib)
	{
	global $MESSAGE;

	$part = $MESSAGE->mime_parts[asciiwords(get_input_value('_part', RCUBE_INPUT_GPC))];
	$ctype_primary = strtolower($part->ctype_primary);

	$attrib['src'] = './?' . str_replace('_frame=', ($ctype_primary=='text' ? '_show=' : '_preload='), $_SERVER['QUERY_STRING']);

	return html::iframe($attrib);
	}


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

	$rcmail = rcmail::get_instance();
	$rcmail->plugins->exec_hook('attachments_cleanup', array());
	$rcmail->session->remove('compose');
	}


	/**
	* Send the given message using the configured method
	*
	* @param object $message Reference to Mail_MIME object
	* @param string $from Sender address string
	* @param array $mailto Array of recipient address strings
	* @param array $smtp_error SMTP error array (reference)
	* @param string $body_file Location of file with saved message body (reference)
	* @param array $smtp_opts SMTP options (e.g. DSN request)
	*
	* @return boolean Send status.
	*/
	function rcmail_deliver_message(&$message, $from, $mailto, &$smtp_error, &$body_file, $smtp_opts=null)
	{
	global $CONFIG, $RCMAIL;

	$headers = $message->headers();

	// send thru SMTP server using custom SMTP library
	if ($CONFIG['smtp_server']) {
	// generate list of recipients
	$a_recipients = array($mailto);

	if (strlen($headers['Cc']))
	$a_recipients[] = $headers['Cc'];
	if (strlen($headers['Bcc']))
	$a_recipients[] = $headers['Bcc'];

	// clean Bcc from header for recipients
	$send_headers = $headers;
	unset($send_headers['Bcc']);
	// here too, it because txtHeaders() below use $message->_headers not only $send_headers
	unset($message->_headers['Bcc']);

	$smtp_headers = $message->txtHeaders($send_headers, true);

	if ($message->getParam('delay_file_io')) {
	// use common temp dir
	$temp_dir = $RCMAIL->config->get('temp_dir');
	$body_file = tempnam($temp_dir, 'rcmMsg');
	if (PEAR::isError($mime_result = $message->saveMessageBody($body_file))) {
	raise_error(array('code' => 600, 'type' => 'php',
	'file' => __FILE__, 'line' => __LINE__,
	'message' => "Could not create message: ".$mime_result->getMessage()),
	TRUE, FALSE);
	return false;
	}
	$msg_body = fopen($body_file, 'r');
	} else {
	$msg_body = $message->get();
	}

	// send message
	if (!is_object($RCMAIL->smtp))
	$RCMAIL->smtp_init(true);

	$sent = $RCMAIL->smtp->send_mail($from, $a_recipients, $smtp_headers, $msg_body, $smtp_opts);
	$smtp_response = $RCMAIL->smtp->get_response();
	$smtp_error = $RCMAIL->smtp->get_error();

	// log error
	if (!$sent)
	raise_error(array('code' => 800, 'type' => 'smtp', 'line' => __LINE__, 'file' => __FILE__,
	'message' => "SMTP error: ".join("\n", $smtp_response)), TRUE, FALSE);
	}
	// send mail using PHP's mail() function
	else {
	// unset some headers because they will be added by the mail() function
	$headers_enc = $message->headers($headers);
	$headers_php = $message->_headers;
	unset($headers_php['To'], $headers_php['Subject']);

	// reset stored headers and overwrite
	$message->_headers = array();
	$header_str = $message->txtHeaders($headers_php);

	// #1485779
	if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
	if (preg_match_all('/<([^@]+@[^>]+)>/', $headers_enc['To'], $m)) {
	$headers_enc['To'] = implode(', ', $m[1]);
	}
	}

	$msg_body = $message->get();

	if (PEAR::isError($msg_body))
	raise_error(array('code' => 600, 'type' => 'php',
	'file' => __FILE__, 'line' => __LINE__,
	'message' => "Could not create message: ".$msg_body->getMessage()),
	TRUE, FALSE);
	else {
	$delim = $RCMAIL->config->header_delimiter();
	$to = $headers_enc['To'];
	$subject = $headers_enc['Subject'];

	if ($delim != "\r\n") {
	$header_str = str_replace("\r\n", $delim, $header_str);
	$msg_body = str_replace("\r\n", $delim, $msg_body);
	$to = str_replace("\r\n", $delim, $to);
	$subject = str_replace("\r\n", $delim, $subject);
	}

	if (ini_get('safe_mode'))
	$sent = mail($to, $subject, $msg_body, $header_str);
	else
	$sent = mail($to, $subject, $msg_body, $header_str, "-f$from");
	}
	}

	if ($sent) {
	$RCMAIL->plugins->exec_hook('message_sent', array('headers' => $headers, 'body' => $msg_body));

	// remove MDN headers after sending
	unset($headers['Return-Receipt-To'], $headers['Disposition-Notification-To']);

	// get all recipients
	if ($headers['Cc'])
	$mailto .= $headers['Cc'];
	if ($headers['Bcc'])
	$mailto .= $headers['Bcc'];
	if (preg_match_all('/<([^@]+@[^>]+)>/', $mailto, $m))
	$mailto = implode(', ', array_unique($m[1]));

	if ($CONFIG['smtp_log']) {
	write_log('sendmail', sprintf("User %s [%s]; Message for %s; %s",
	$RCMAIL->user->get_username(),
	$_SERVER['REMOTE_ADDR'],
	$mailto,
	!empty($smtp_response) ? join('; ', $smtp_response) : ''));
	}
	}

	if (is_resource($msg_body)) {
	fclose($msg_body);
	}

	$message->_headers = array();
	$message->headers($headers);

	return $sent;
	}

	/**
	* Send the MDN response
	*
	* @param mixed $message Original message object (rcube_message) or UID
	* @param array $smtp_error SMTP error array (reference)
	*
	* @return boolean Send status
	*/
	function rcmail_send_mdn($message, &$smtp_error)
	{
	global $RCMAIL, $IMAP;

	if (!is_a($message, rcube_message))
	$message = new rcube_message($message);

	if ($message->headers->mdn_to && !$message->headers->mdn_sent &&
	($IMAP->check_permflag('MDNSENT') \|\| $IMAP->check_permflag('*')))
	{
	$identity = $RCMAIL->user->get_identity();
	$sender = format_email_recipient($identity['email'], $identity['name']);
	$recipient = array_shift($IMAP->decode_address_list($message->headers->mdn_to));
	$mailto = $recipient['mailto'];

	$compose = new Mail_mime("\r\n");

	$compose->setParam('text_encoding', 'quoted-printable');
	$compose->setParam('html_encoding', 'quoted-printable');
	$compose->setParam('head_encoding', 'quoted-printable');
	$compose->setParam('head_charset', RCMAIL_CHARSET);
	$compose->setParam('html_charset', RCMAIL_CHARSET);
	$compose->setParam('text_charset', RCMAIL_CHARSET);

	// compose headers array
	$headers = array(
	'Date' => rcmail_user_date(),
	'From' => $sender,
	'To' => $message->headers->mdn_to,
	'Subject' => rcube_label('receiptread') . ': ' . $message->subject,
	'Message-ID' => rcmail_gen_message_id(),
	'X-Sender' => $identity['email'],
	'References' => trim($message->headers->references . ' ' . $message->headers->messageID),
	);

	if ($agent = $RCMAIL->config->get('useragent'))
	$headers['User-Agent'] = $agent;

	$body = rcube_label("yourmessage") . "\r\n\r\n" .
	"\t" . rcube_label("to") . ': ' . rcube_imap::decode_mime_string($message->headers->to, $message->headers->charset) . "\r\n" .
	"\t" . rcube_label("subject") . ': ' . $message->subject . "\r\n" .
	"\t" . rcube_label("sent") . ': ' . format_date($message->headers->date, $RCMAIL->config->get('date_long')) . "\r\n" .
	"\r\n" . rcube_label("receiptnote") . "\r\n";

	$ua = $RCMAIL->config->get('useragent', "Roundcube Webmail (Version ".RCMAIL_VERSION.")");
	$report = "Reporting-UA: $ua\r\n";

	if ($message->headers->to)
	$report .= "Original-Recipient: {$message->headers->to}\r\n";

	$report .= "Final-Recipient: rfc822; {$identity['email']}\r\n" .
	"Original-Message-ID: {$message->headers->messageID}\r\n" .
	"Disposition: manual-action/MDN-sent-manually; displayed\r\n";

	$compose->headers($headers);
	$compose->setContentType('multipart/report', array('report-type'=> 'disposition-notification'));
	$compose->setTXTBody(rc_wordwrap($body, 75, "\r\n"));
	$compose->addAttachment($report, 'message/disposition-notification', 'MDNPart2.txt', false, '7bit', 'inline');

	$sent = rcmail_deliver_message($compose, $identity['email'], $mailto, $smtp_error, $body_file);

	if ($sent)
	{
	$IMAP->set_flag($message->uid, 'MDNSENT');
	return true;
	}
	}

	return false;
	}

	// Returns unique Message-ID
	function rcmail_gen_message_id()
	{
	global $RCMAIL;

	$local_part = md5(uniqid('rcmail'.mt_rand(),true));
	$domain_part = $RCMAIL->user->get_username('domain');

	// Try to find FQDN, some spamfilters doesn't like 'localhost' (#1486924)
	if (!preg_match('/\.[a-z]+$/i', $domain_part)) {
	if (($host = preg_replace('/:[0-9]+$/', '', $_SERVER['HTTP_HOST']))
	&& preg_match('/\.[a-z]+$/i', $host)) {
	$domain_part = $host;
	}
	else if (($host = preg_replace('/:[0-9]+$/', '', $_SERVER['SERVER_NAME']))
	&& preg_match('/\.[a-z]+$/i', $host)) {
	$domain_part = $host;
	}
	}

	return sprintf('<%s@%s>', $local_part, $domain_part);
	}

	// Returns RFC2822 formatted current date in user's timezone
	function rcmail_user_date()
	{
	global $CONFIG;

	// get user's timezone
	if ($CONFIG['timezone'] === 'auto') {
	$tz = isset($_SESSION['timezone']) ? $_SESSION['timezone'] : date('Z')/3600;
	}
	else {
	$tz = $CONFIG['timezone'];
	if ($CONFIG['dst_active'])
	$tz++;
	}

	$date = time() + $tz * 60 * 60;
	$date = gmdate('r', $date);
	$tz = sprintf('%+05d', intval($tz) * 100 + ($tz - intval($tz)) * 60);
	$date = preg_replace('/[+-][0-9]{4}$/', $tz, $date);

	return $date;
	}


	function rcmail_search_filter($attrib)
	{
	global $OUTPUT, $CONFIG;

	if (!strlen($attrib['id']))
	$attrib['id'] = 'rcmlistfilter';

	$attrib['onchange'] = JS_OBJECT_NAME.'.filter_mailbox(this.value)';

	/*
	RFC3501 (6.4.4): 'ALL', 'RECENT',
	'ANSWERED', 'DELETED', 'FLAGGED', 'SEEN',
	'UNANSWERED', 'UNDELETED', 'UNFLAGGED', 'UNSEEN',
	'NEW', // = (RECENT UNSEEN)
	'OLD' // = NOT RECENT
	*/

	$select_filter = new html_select($attrib);
	$select_filter->add(rcube_label('all'), 'ALL');
	$select_filter->add(rcube_label('unread'), 'UNSEEN');
	$select_filter->add(rcube_label('flagged'), 'FLAGGED');
	$select_filter->add(rcube_label('unanswered'), 'UNANSWERED');
	if (!$CONFIG['skip_deleted'])
	$select_filter->add(rcube_label('deleted'), 'DELETED');

	$out = $select_filter->show($_SESSION['search_filter']);

	$OUTPUT->add_gui_object('search_filter', $attrib['id']);

	return $out;
	}

	function rcmail_message_error($uid=null)
	{
	global $RCMAIL;

	// Set env variables for messageerror.html template
	if ($RCMAIL->action == 'show') {
	$mbox_name = $RCMAIL->imap->get_mailbox_name();
	$RCMAIL->output->set_env('mailbox', $mbox_name);
	$RCMAIL->output->set_env('uid', null);
	}
	// display error message
	$RCMAIL->output->show_message('messageopenerror', 'error');
	// ... display message error page
	$RCMAIL->output->send('messageerror');
	}

	// register UI objects
	$OUTPUT->add_handlers(array(
	'mailboxlist' => 'rcmail_mailbox_list',
	'messages' => 'rcmail_message_list',
	'messagecountdisplay' => 'rcmail_messagecount_display',
	'quotadisplay' => 'rcmail_quota_display',
	'mailboxname' => 'rcmail_mailbox_name_display',
	'messageheaders' => 'rcmail_message_headers',
	'messagebody' => 'rcmail_message_body',
	'messagecontentframe' => 'rcmail_messagecontent_frame',
	'messagepartframe' => 'rcmail_message_part_frame',
	'messagepartcontrols' => 'rcmail_message_part_controls',
	'searchfilter' => 'rcmail_search_filter',
	'searchform' => array($OUTPUT, 'search_form'),
	));

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