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344 lines
12 KiB
PHP
344 lines
12 KiB
PHP
<?php
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/**
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* ZipDownload
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*
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* Plugin to allow the download of all message attachments in one zip file
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* and downloading of many messages in one go.
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*
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* @version 3.0
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* @requires php_zip extension (including ZipArchive class)
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* @author Philip Weir
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* @author Thomas Bruderli
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* @author Aleksander Machniak
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*/
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class zipdownload extends rcube_plugin
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{
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public $task = 'mail';
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private $charset = 'ASCII';
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/**
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* Plugin initialization
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*/
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public function init()
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{
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// check requirements first
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if (!class_exists('ZipArchive', false)) {
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rcmail::raise_error(array(
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'code' => 520,
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'file' => __FILE__,
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'line' => __LINE__,
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'message' => "php_zip extension is required for the zipdownload plugin"), true, false);
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return;
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}
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$rcmail = rcmail::get_instance();
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$this->load_config();
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$this->charset = $rcmail->config->get('zipdownload_charset', RCUBE_CHARSET);
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$this->add_texts('localization');
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if ($rcmail->config->get('zipdownload_attachments', 1) > -1 && ($rcmail->action == 'show' || $rcmail->action == 'preview')) {
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$this->add_hook('template_object_messageattachments', array($this, 'attachment_ziplink'));
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}
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$this->register_action('plugin.zipdownload.attachments', array($this, 'download_attachments'));
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$this->register_action('plugin.zipdownload.messages', array($this, 'download_messages'));
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if (!$rcmail->action && $rcmail->config->get('zipdownload_selection')) {
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$this->download_menu();
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}
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}
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/**
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* Place a link/button after attachments listing to trigger download
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*/
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public function attachment_ziplink($p)
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{
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$rcmail = rcmail::get_instance();
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// only show the link if there is more than the configured number of attachments
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if (substr_count($p['content'], '<li') > $rcmail->config->get('zipdownload_attachments', 1)) {
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$href = $rcmail->url(array(
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'_action' => 'plugin.zipdownload.attachments',
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'_mbox' => $rcmail->output->env['mailbox'],
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'_uid' => $rcmail->output->env['uid'],
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), false, false, true);
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$link = html::a(array('href' => $href, 'class' => 'button zipdownload'),
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rcube::Q($this->gettext('downloadall'))
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);
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// append link to attachments list, slightly different in some skins
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switch (rcmail::get_instance()->config->get('skin')) {
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case 'classic':
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$p['content'] = str_replace('</ul>', html::tag('li', array('class' => 'zipdownload'), $link) . '</ul>', $p['content']);
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break;
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default:
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$p['content'] .= $link;
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break;
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}
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$this->include_stylesheet($this->local_skin_path() . '/zipdownload.css');
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}
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return $p;
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}
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/**
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* Adds download options menu to the page
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*/
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public function download_menu()
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{
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$this->include_script('zipdownload.js');
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$this->add_label('download');
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$rcmail = rcmail::get_instance();
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$menu = array();
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$ul_attr = array('role' => 'menu', 'aria-labelledby' => 'aria-label-zipdownloadmenu');
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if ($rcmail->config->get('skin') != 'classic') {
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$ul_attr['class'] = 'toolbarmenu';
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}
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foreach (array('eml', 'mbox', 'maildir') as $type) {
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$menu[] = html::tag('li', null, $rcmail->output->button(array(
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'command' => "download-$type",
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'label' => "zipdownload.download$type",
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'classact' => 'active',
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)));
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}
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$rcmail->output->add_footer(html::div(array('id' => 'zipdownload-menu', 'class' => 'popupmenu', 'aria-hidden' => 'true'),
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html::tag('h2', array('class' => 'voice', 'id' => 'aria-label-zipdownloadmenu'), "Message Download Options Menu") .
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html::tag('ul', $ul_attr, implode('', $menu))));
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}
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/**
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* Handler for attachment download action
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*/
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public function download_attachments()
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{
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$rcmail = rcmail::get_instance();
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// require CSRF protected request
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$rcmail->request_security_check(rcube_utils::INPUT_GET);
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$imap = $rcmail->get_storage();
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$temp_dir = $rcmail->config->get('temp_dir');
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$tmpfname = tempnam($temp_dir, 'zipdownload');
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$tempfiles = array($tmpfname);
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$message = new rcube_message(rcube_utils::get_input_value('_uid', rcube_utils::INPUT_GET));
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// open zip file
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$zip = new ZipArchive();
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$zip->open($tmpfname, ZIPARCHIVE::OVERWRITE);
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foreach ($message->attachments as $part) {
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$pid = $part->mime_id;
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$part = $message->mime_parts[$pid];
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$filename = $part->filename;
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if ($filename === null || $filename === '') {
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$ext = (array) rcube_mime::get_mime_extensions($part->mimetype);
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$ext = array_shift($ext);
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$filename = $rcmail->gettext('messagepart') . ' ' . $pid;
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if ($ext) {
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$filename .= '.' . $ext;
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}
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}
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$disp_name = $this->_convert_filename($filename);
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$tmpfn = tempnam($temp_dir, 'zipattach');
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$tmpfp = fopen($tmpfn, 'w');
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$tempfiles[] = $tmpfn;
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$message->get_part_body($part->mime_id, false, 0, $tmpfp);
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$zip->addFile($tmpfn, $disp_name);
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fclose($tmpfp);
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}
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$zip->close();
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$filename = ($message->subject ? $message->subject : 'roundcube') . '.zip';
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$this->_deliver_zipfile($tmpfname, $filename);
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// delete temporary files from disk
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foreach ($tempfiles as $tmpfn) {
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unlink($tmpfn);
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}
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exit;
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}
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/**
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* Handler for message download action
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*/
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public function download_messages()
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{
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$rcmail = rcmail::get_instance();
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if ($rcmail->config->get('zipdownload_selection') && !empty($_POST['_uid'])) {
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$messageset = rcmail::get_uids();
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if (sizeof($messageset)) {
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$this->_download_messages($messageset);
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}
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}
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}
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/**
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* Helper method to packs all the given messages into a zip archive
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*
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* @param array List of message UIDs to download
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*/
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private function _download_messages($messageset)
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{
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$rcmail = rcmail::get_instance();
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$imap = $rcmail->get_storage();
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$mode = rcube_utils::get_input_value('_mode', rcube_utils::INPUT_POST);
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$temp_dir = $rcmail->config->get('temp_dir');
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$tmpfname = tempnam($temp_dir, 'zipdownload');
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$tempfiles = array($tmpfname);
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$folders = count($messageset) > 1;
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// @TODO: file size limit
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// open zip file
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$zip = new ZipArchive();
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$zip->open($tmpfname, ZIPARCHIVE::OVERWRITE);
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if ($mode == 'mbox') {
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$tmpfp = fopen($tmpfname . '.mbox', 'w');
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}
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foreach ($messageset as $mbox => $uids) {
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$imap->set_folder($mbox);
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$path = $folders ? str_replace($imap->get_hierarchy_delimiter(), '/', $mbox) . '/' : '';
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if ($uids === '*') {
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$index = $imap->index($mbox, null, null, true);
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$uids = $index->get();
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}
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foreach ($uids as $uid) {
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$headers = $imap->get_message_headers($uid);
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if ($mode == 'mbox') {
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$from = rcube_mime::decode_address_list($headers->from, null, true, $headers->charset, true);
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$from = array_shift($from);
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// Mbox format header
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// @FIXME: \r\n or \n
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// @FIXME: date format
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$header = sprintf("From %s %s\r\n",
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// replace spaces with hyphens
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$from ? preg_replace('/\s/', '-', $from) : 'MAILER-DAEMON',
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// internaldate
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$headers->internaldate
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);
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fwrite($tmpfp, $header);
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// Use stream filter to quote "From " in the message body
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stream_filter_register('mbox_filter', 'zipdownload_mbox_filter');
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$filter = stream_filter_append($tmpfp, 'mbox_filter');
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$imap->get_raw_body($uid, $tmpfp);
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stream_filter_remove($filter);
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fwrite($tmpfp, "\r\n");
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}
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else { // maildir
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$subject = rcube_mime::decode_mime_string((string)$headers->subject);
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$subject = $this->_convert_filename($subject);
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$subject = substr($subject, 0, 16);
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$disp_name = ($subject ? $subject : 'message_rfc822') . ".eml";
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$disp_name = $path . $uid . "_" . $disp_name;
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$tmpfn = tempnam($temp_dir, 'zipmessage');
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$tmpfp = fopen($tmpfn, 'w');
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$imap->get_raw_body($uid, $tmpfp);
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$tempfiles[] = $tmpfn;
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fclose($tmpfp);
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$zip->addFile($tmpfn, $disp_name);
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}
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}
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}
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$filename = $folders ? 'messages' : $imap->get_folder();
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if ($mode == 'mbox') {
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$tempfiles[] = $tmpfname . '.mbox';
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fclose($tmpfp);
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$zip->addFile($tmpfname . '.mbox', $filename . '.mbox');
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}
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$zip->close();
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$this->_deliver_zipfile($tmpfname, $filename . '.zip');
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// delete temporary files from disk
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foreach ($tempfiles as $tmpfn) {
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unlink($tmpfn);
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}
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exit;
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}
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/**
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* Helper method to send the zip archive to the browser
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*/
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private function _deliver_zipfile($tmpfname, $filename)
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{
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$browser = new rcube_browser;
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$rcmail = rcmail::get_instance();
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$rcmail->output->nocacheing_headers();
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if ($browser->ie)
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$filename = rawurlencode($filename);
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else
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$filename = addcslashes($filename, '"');
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// send download headers
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header("Content-Type: application/octet-stream");
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if ($browser->ie) {
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header("Content-Type: application/force-download");
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}
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// don't kill the connection if download takes more than 30 sec.
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@set_time_limit(0);
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header("Content-Disposition: attachment; filename=\"". $filename ."\"");
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header("Content-length: " . filesize($tmpfname));
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readfile($tmpfname);
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}
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/**
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* Helper function to convert filenames to the configured charset
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*/
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private function _convert_filename($str)
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{
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$str = rcube_charset::convert($str, RCUBE_CHARSET, $this->charset);
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return strtr($str, array(':' => '', '/' => '-'));
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}
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}
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class zipdownload_mbox_filter extends php_user_filter
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{
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function filter($in, $out, &$consumed, $closing)
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{
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while ($bucket = stream_bucket_make_writeable($in)) {
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// messages are read line by line
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if (preg_match('/^>*From /', $bucket->data)) {
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$bucket->data = '>' . $bucket->data;
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$bucket->datalen += 1;
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}
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$consumed += $bucket->datalen;
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stream_bucket_append($out, $bucket);
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}
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return PSFS_PASS_ON;
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}
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}
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