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	diff --git a/plugins/zipdownload/composer.json b/plugins/zipdownload/composer.json
	index bc171d82a..2d772e52f 100644
	--- a/plugins/zipdownload/composer.json
	+++ b/plugins/zipdownload/composer.json
	@@ -1,30 +1,30 @@
	{
	"name": "roundcube/zipdownload",
	"type": "roundcube-plugin",
	"description": "Adds an option to download all attachments to a message in one zip file, when a message has multiple attachments. Also allows the download of a selection of messages in one zip file. Supports mbox and maildir format.",
	"license": "GPLv3+",
	- "version": "3.0",
	+ "version": "3.1",
	"authors": [
	{
	"name": "Thomas Bruederli",
	"email": "roundcube@gmail.com",
	"role": "Lead"
	},
	{
	"name": "Aleksander Machniak",
	"email": "alec@alec.pl",
	"role": "Lead"
	}
	],
	"repositories": [
	{
	"type": "composer",
	"url": "http://plugins.roundcube.net"
	}
	],
	"require": {
	"php": ">=5.3.0",
	"roundcube/plugin-installer": ">=0.1.3",
	"ext-zip": "*"
	}
	}
	diff --git a/plugins/zipdownload/zipdownload.js b/plugins/zipdownload/zipdownload.js
	index 6f918d298..5c184be89 100644
	--- a/plugins/zipdownload/zipdownload.js
	+++ b/plugins/zipdownload/zipdownload.js
	@@ -1,99 +1,99 @@
	/**
	* ZipDownload plugin script
	*
	* @licstart The following is the entire license notice for the
	* JavaScript code in this file.
	*
	* Copyright (c) 2013-2014, The Roundcube Dev Team
	*
	* The JavaScript code in this page is free software: you can redistribute it
	* and/or modify it under the terms of the GNU General Public License
	* as published by the Free Software Foundation, either version 3 of
	* the License, or (at your option) any later version.
	*
	* @licend The above is the entire license notice
	* for the JavaScript code in this file.
	*/

	window.rcmail && rcmail.addEventListener('init', function(evt) {
	// register additional actions
	rcmail.register_command('download-eml', function() { rcmail_zipdownload('eml'); });
	rcmail.register_command('download-mbox', function() { rcmail_zipdownload('mbox'); });
	rcmail.register_command('download-maildir', function() { rcmail_zipdownload('maildir'); });

	// commands status
	rcmail.message_list && rcmail.message_list.addEventListener('select', function(list) {
	var selected = list.get_selection().length;

	rcmail.enable_command('download', selected > 0);
	rcmail.enable_command('download-eml', selected == 1);
	rcmail.enable_command('download-mbox', 'download-maildir', selected > 1);
	});

	// hook before default download action
	rcmail.addEventListener('beforedownload', rcmail_zipdownload_menu);

	// find and modify default download link/button
	$.each(rcmail.buttons['download'] \|\| [], function() {
	var link = $('#' + this.id),
	span = $('span', link);

	if (!span.length) {
	span = $('<span>');
	link.html('').append(span);
	}

	span.text(rcmail.get_label('zipdownload.download'));
	rcmail.env.download_link = link;
	});
	- });
	+});


	function rcmail_zipdownload(mode)
	{
	// default .eml download of single message
	if (mode == 'eml') {
	var uid = rcmail.get_single_uid();
	rcmail.goto_url('viewsource', rcmail.params_from_uid(uid, {_save: 1}), false, true);
	return;
	}

	// multi-message download, use hidden form to POST selection
	if (rcmail.message_list && rcmail.message_list.get_selection().length > 1) {
	var inputs = [], form = $('#zipdownload-form'),
	post = rcmail.selection_post_data();

	post._mode = mode;
	post._token = rcmail.env.request_token;

	$.each(post, function(k, v) {
	if (typeof v == 'object' && v.length > 1) {
	for (var j=0; j < v.length; j++)
	inputs.push($('<input>').attr({type: 'hidden', name: k+'[]', value: v[j]}));
	}
	else {
	inputs.push($('<input>').attr({type: 'hidden', name: k, value: v}));
	}
	});

	if (!form.length)
	form = $('<form>').attr({
	style: 'display: none',
	method: 'POST',
	action: '?_task=mail&_action=plugin.zipdownload.messages'
	})
	.appendTo('body');

	form.html('').append(inputs).submit();
	}
	}

	// display download options menu
	function rcmail_zipdownload_menu(e)
	{
	// show (sub)menu for download selection
	rcmail.command('menu-open', 'zipdownload-menu', e && e.target ? e.target : rcmail.env.download_link, e);

	// abort default download action
	return false;
	}
	diff --git a/plugins/zipdownload/zipdownload.php b/plugins/zipdownload/zipdownload.php
	index 241de5489..67c257988 100644
	--- a/plugins/zipdownload/zipdownload.php
	+++ b/plugins/zipdownload/zipdownload.php
	@@ -1,343 +1,343 @@
	<?php

	/**
	* ZipDownload
	*
	* Plugin to allow the download of all message attachments in one zip file
	* and downloading of many messages in one go.
	*
	- * @version 3.0
	+ * @version 3.1
	* @requires php_zip extension (including ZipArchive class)
	* @author Philip Weir
	* @author Thomas Bruderli
	* @author Aleksander Machniak
	*/
	class zipdownload extends rcube_plugin
	{
	public $task = 'mail';
	private $charset = 'ASCII';

	/**
	* Plugin initialization
	*/
	public function init()
	{
	// check requirements first
	if (!class_exists('ZipArchive', false)) {
	rcmail::raise_error(array(
	'code' => 520,
	'file' => __FILE__,
	'line' => __LINE__,
	'message' => "php_zip extension is required for the zipdownload plugin"), true, false);
	return;
	}

	$rcmail = rcmail::get_instance();

	$this->load_config();
	$this->charset = $rcmail->config->get('zipdownload_charset', RCUBE_CHARSET);
	$this->add_texts('localization');

	if ($rcmail->config->get('zipdownload_attachments', 1) > -1 && ($rcmail->action == 'show' \|\| $rcmail->action == 'preview')) {
	$this->add_hook('template_object_messageattachments', array($this, 'attachment_ziplink'));
	}

	$this->register_action('plugin.zipdownload.attachments', array($this, 'download_attachments'));
	$this->register_action('plugin.zipdownload.messages', array($this, 'download_messages'));

	if (!$rcmail->action && $rcmail->config->get('zipdownload_selection')) {
	$this->download_menu();
	}
	}

	/**
	* Place a link/button after attachments listing to trigger download
	*/
	public function attachment_ziplink($p)
	{
	$rcmail = rcmail::get_instance();

	// only show the link if there is more than the configured number of attachments
	if (substr_count($p['content'], '<li') > $rcmail->config->get('zipdownload_attachments', 1)) {
	$href = $rcmail->url(array(
	'_action' => 'plugin.zipdownload.attachments',
	'_mbox' => $rcmail->output->env['mailbox'],
	'_uid' => $rcmail->output->env['uid'],
	), false, false, true);

	$link = html::a(array('href' => $href, 'class' => 'button zipdownload'),
	rcube::Q($this->gettext('downloadall'))
	);

	// append link to attachments list, slightly different in some skins
	switch (rcmail::get_instance()->config->get('skin')) {
	case 'classic':
	$p['content'] = str_replace('</ul>', html::tag('li', array('class' => 'zipdownload'), $link) . '</ul>', $p['content']);
	break;

	default:
	$p['content'] .= $link;
	break;
	}

	$this->include_stylesheet($this->local_skin_path() . '/zipdownload.css');
	}

	return $p;
	}

	/**
	* Adds download options menu to the page
	*/
	public function download_menu()
	{
	$this->include_script('zipdownload.js');
	$this->add_label('download');

	$rcmail = rcmail::get_instance();
	$menu = array();
	$ul_attr = array('role' => 'menu', 'aria-labelledby' => 'aria-label-zipdownloadmenu');
	if ($rcmail->config->get('skin') != 'classic') {
	$ul_attr['class'] = 'toolbarmenu';
	}

	foreach (array('eml', 'mbox', 'maildir') as $type) {
	$menu[] = html::tag('li', null, $rcmail->output->button(array(
	'command' => "download-$type",
	'label' => "zipdownload.download$type",
	'classact' => 'active',
	)));
	}

	$rcmail->output->add_footer(html::div(array('id' => 'zipdownload-menu', 'class' => 'popupmenu', 'aria-hidden' => 'true'),
	html::tag('h2', array('class' => 'voice', 'id' => 'aria-label-zipdownloadmenu'), "Message Download Options Menu") .
	html::tag('ul', $ul_attr, implode('', $menu))));
	}

	/**
	* Handler for attachment download action
	*/
	public function download_attachments()
	{
	- $rcmail = rcmail::get_instance();
	+ $rcmail = rcmail::get_instance();

	// require CSRF protected request
	$rcmail->request_security_check(rcube_utils::INPUT_GET);

	$imap = $rcmail->get_storage();
	$temp_dir = $rcmail->config->get('temp_dir');
	$tmpfname = tempnam($temp_dir, 'zipdownload');
	$tempfiles = array($tmpfname);
	$message = new rcube_message(rcube_utils::get_input_value('_uid', rcube_utils::INPUT_GET));

	// open zip file
	$zip = new ZipArchive();
	$zip->open($tmpfname, ZIPARCHIVE::OVERWRITE);

	foreach ($message->attachments as $part) {
	$pid = $part->mime_id;
	$part = $message->mime_parts[$pid];
	$filename = $part->filename;

	if ($filename === null \|\| $filename === '') {
	$ext = (array) rcube_mime::get_mime_extensions($part->mimetype);
	$ext = array_shift($ext);
	$filename = $rcmail->gettext('messagepart') . ' ' . $pid;
	if ($ext) {
	$filename .= '.' . $ext;
	}
	}

	$disp_name = $this->_convert_filename($filename);
	$tmpfn = tempnam($temp_dir, 'zipattach');
	$tmpfp = fopen($tmpfn, 'w');
	$tempfiles[] = $tmpfn;

	$message->get_part_body($part->mime_id, false, 0, $tmpfp);
	$zip->addFile($tmpfn, $disp_name);
	fclose($tmpfp);
	}

	$zip->close();

	$filename = ($message->subject ?: 'roundcube') . '.zip';
	$this->_deliver_zipfile($tmpfname, $filename);

	// delete temporary files from disk
	foreach ($tempfiles as $tmpfn) {
	unlink($tmpfn);
	}

	exit;
	}

	/**
	* Handler for message download action
	*/
	public function download_messages()
	{
	$rcmail = rcmail::get_instance();

	if ($rcmail->config->get('zipdownload_selection') && !empty($_POST['_uid'])) {
	$messageset = rcmail::get_uids();
	if (sizeof($messageset)) {
	$this->_download_messages($messageset);
	}
	}
	}

	/**
	* Helper method to packs all the given messages into a zip archive
	*
	* @param array List of message UIDs to download
	*/
	private function _download_messages($messageset)
	{
	$rcmail = rcmail::get_instance();
	$imap = $rcmail->get_storage();
	$mode = rcube_utils::get_input_value('_mode', rcube_utils::INPUT_POST);
	$temp_dir = $rcmail->config->get('temp_dir');
	$tmpfname = tempnam($temp_dir, 'zipdownload');
	$tempfiles = array($tmpfname);
	$folders = count($messageset) > 1;

	// @TODO: file size limit

	// open zip file
	$zip = new ZipArchive();
	$zip->open($tmpfname, ZIPARCHIVE::OVERWRITE);

	if ($mode == 'mbox') {
	$tmpfp = fopen($tmpfname . '.mbox', 'w');
	}

	foreach ($messageset as $mbox => $uids) {
	$imap->set_folder($mbox);
	$path = $folders ? str_replace($imap->get_hierarchy_delimiter(), '/', $mbox) . '/' : '';

	if ($uids === '*') {
	$index = $imap->index($mbox, null, null, true);
	$uids = $index->get();
	}

	foreach ($uids as $uid) {
	$headers = $imap->get_message_headers($uid);

	if ($mode == 'mbox') {
	$from = rcube_mime::decode_address_list($headers->from, null, true, $headers->charset, true);
	$from = array_shift($from);

	// Mbox format header
	// @FIXME: \r\n or \n
	// @FIXME: date format
	$header = sprintf("From %s %s\r\n",
	// replace spaces with hyphens
	$from ? preg_replace('/\s/', '-', $from) : 'MAILER-DAEMON',
	// internaldate
	$headers->internaldate
	);

	fwrite($tmpfp, $header);

	// Use stream filter to quote "From " in the message body
	stream_filter_register('mbox_filter', 'zipdownload_mbox_filter');
	$filter = stream_filter_append($tmpfp, 'mbox_filter');
	$imap->get_raw_body($uid, $tmpfp);
	stream_filter_remove($filter);
	fwrite($tmpfp, "\r\n");
	}
	else { // maildir
	$subject = rcube_mime::decode_mime_string((string)$headers->subject);
	$subject = $this->_convert_filename($subject);
	$subject = substr($subject, 0, 16);

	$disp_name = ($subject ?: 'message_rfc822') . ".eml";
	$disp_name = $path . $uid . "_" . $disp_name;

	$tmpfn = tempnam($temp_dir, 'zipmessage');
	$tmpfp = fopen($tmpfn, 'w');
	$imap->get_raw_body($uid, $tmpfp);
	$tempfiles[] = $tmpfn;
	fclose($tmpfp);
	$zip->addFile($tmpfn, $disp_name);
	}
	}
	}

	$filename = $folders ? 'messages' : $imap->get_folder();

	if ($mode == 'mbox') {
	$tempfiles[] = $tmpfname . '.mbox';
	fclose($tmpfp);
	$zip->addFile($tmpfname . '.mbox', $filename . '.mbox');
	}

	$zip->close();

	$this->_deliver_zipfile($tmpfname, $filename . '.zip');

	// delete temporary files from disk
	foreach ($tempfiles as $tmpfn) {
	unlink($tmpfn);
	}

	exit;
	}

	/**
	* Helper method to send the zip archive to the browser
	*/
	private function _deliver_zipfile($tmpfname, $filename)
	{
	$browser = new rcube_browser;
	$rcmail = rcmail::get_instance();

	$rcmail->output->nocacheing_headers();

	if ($browser->ie)
	$filename = rawurlencode($filename);
	else
	$filename = addcslashes($filename, '"');

	// send download headers
	header("Content-Type: application/octet-stream");
	if ($browser->ie) {
	header("Content-Type: application/force-download");
	}

	// don't kill the connection if download takes more than 30 sec.
	@set_time_limit(0);
	header("Content-Disposition: attachment; filename=\"". $filename ."\"");
	header("Content-length: " . filesize($tmpfname));
	readfile($tmpfname);
	}

	/**
	* Helper function to convert filenames to the configured charset
	*/
	private function _convert_filename($str)
	{
	$str = rcube_charset::convert($str, RCUBE_CHARSET, $this->charset);

	return strtr($str, array(':' => '', '/' => '-'));
	}
	}

	class zipdownload_mbox_filter extends php_user_filter
	{
	function filter($in, $out, &$consumed, $closing)
	{
	while ($bucket = stream_bucket_make_writeable($in)) {
	// messages are read line by line
	if (preg_match('/^>*From /', $bucket->data)) {
	$bucket->data = '>' . $bucket->data;
	$bucket->datalen += 1;
	}

	$consumed += $bucket->datalen;
	stream_bucket_append($out, $bucket);
	}

	return PSFS_PASS_ON;
	}
	}

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