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zipdownload.php
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zipdownload.php
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<?php
/**
* ZipDownload
*
* Plugin to allow the download of all message attachments in one zip file
* and also download of many messages in one go.
*
* @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';
private $names = array();
private $default_limit = '50MB';
// RFC4155: mbox date format
const MBOX_DATE_FORMAT = 'D M d H:i:s Y';
/**
* 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 = $rcmail->config->get('zipdownload_charset', RCUBE_CHARSET);
if ($rcmail->config->get('zipdownload_attachments', 1) > -1 && ($rcmail->action == 'show' || $rcmail->action == 'preview')) {
$this->add_texts('localization');
$this->add_hook('template_object_messageattachments', array($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->default_limit)) {
$this->add_texts('localization');
$this->download_menu();
}
}
/**
* Place a link/button after attachments listing to trigger download
*/
public function attachment_ziplink($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 menu';
}
foreach (array('eml', 'mbox', 'maildir') as $type) {
$menu[] = html::tag('li', null, $rcmail->output->button(array(
'command' => "download-$type",
'label' => "zipdownload.download$type",
'class' => "download $type disabled",
'classact' => "download $type active",
'type' => 'link',
)));
}
$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();
// require CSRF protected request
$rcmail->request_security_check(rcube_utils::INPUT_GET);
$imap = $rcmail->get_storage();
$tmpfname = rcube_utils::temp_filename('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];
$disp_name = $this->_create_displayname($part);
$tmpfn = rcube_utils::temp_filename('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();
$filename = ($this->_filename_from_subject($message->subject) ?: 'attachments') . '.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', $this->default_limit)) {
$messageset = rcmail::get_uids(null, null, $multi, rcube_utils::INPUT_POST);
if (count($messageset)) {
$this->_download_messages($messageset);
}
}
}
/**
* Create and get display name of attachment part to add on zip file
*
* @param $part stdClass Part of attachment on message
*
* @return string Display name of attachment part
*/
private function _create_displayname($part)
{
$rcmail = rcmail::get_instance();
$filename = $part->filename;
if ($filename === null || $filename === '') {
$ext = (array) rcube_mime::get_mime_extensions($part->mimetype);
$ext = array_shift($ext);
$filename = $rcmail->gettext('messagepart') . ' ' . $part->mime_id;
if ($ext) {
$filename .= '.' . $ext;
}
}
$displayname = $this->_convert_filename($filename);
/**
* Adding a number before dot of extension on a name of file with same name on zip
* Ext: attach(1).txt on attach filename that has a attach.txt filename on same zip
*/
if (isset($this->names[$displayname])) {
list($filename, $ext) = preg_split("/\.(?=[^\.]*$)/", $displayname);
$displayname = $filename . '(' . ($this->names[$displayname]++) . ').' . $ext;
$this->names[$displayname] = 1;
}
else {
$this->names[$displayname] = 1;
}
return $displayname;
}
/**
* Helper method to packs all the given messages into a zip archive
*
* @param array List of message UIDs to download
*/
private function _download_messages($messageset)
{
$this->add_texts('localization');
$rcmail = rcmail::get_instance();
$imap = $rcmail->get_storage();
$mode = rcube_utils::get_input_value('_mode', rcube_utils::INPUT_POST);
$limit = $rcmail->config->get('zipdownload_selection', $this->default_limit);
$limit = $limit !== true ? parse_bytes($limit) : -1;
$delimiter = $imap->get_hierarchy_delimiter();
$tmpfname = rcube_utils::temp_filename('zipdownload');
$tempfiles = array($tmpfname);
$folders = count($messageset) > 1;
$timezone = new DateTimeZone('UTC');
$messages = array();
$size = 0;
// collect messages metadata (and check size limit)
foreach ($messageset as $mbox => $uids) {
$imap->set_folder($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') {
// Sender address
$from = rcube_mime::decode_address_list($headers->from, null, true, $headers->charset, true);
$from = array_shift($from);
$from = preg_replace('/\s/', '-', $from);
// Received (internal) date
$date = rcube_utils::anytodatetime($headers->internaldate, $timezone);
if ($date) {
$date = $date->format(self::MBOX_DATE_FORMAT);
}
// Mbox format header (RFC4155)
$header = sprintf("From %s %s\r\n",
$from ?: 'MAILER-DAEMON',
$date ?: ''
);
$messages[$uid . ':' . $mbox] = $header;
}
else { // maildir
$subject = rcube_mime::decode_header($headers->subject, $headers->charset);
$subject = $this->_filename_from_subject(mb_substr($subject, 0, 16));
$subject = $this->_convert_filename($subject);
$path = $folders ? str_replace($delimiter, '/', $mbox) . '/' : '';
$disp_name = $path . $uid . ($subject ? " $subject" : '') . '.eml';
$messages[$uid . ':' . $mbox] = $disp_name;
}
$size += $headers->size;
if ($limit > 0 && $size > $limit) {
unlink($tmpfname);
$msg = $this->gettext(array(
'name' => 'sizelimiterror',
'vars' => array('$size' => $rcmail->show_bytes($limit))
));
$rcmail->output->show_message($msg, 'error');
$rcmail->output->send('iframe');
exit;
}
}
}
// open zip file
$zip = new ZipArchive();
$zip->open($tmpfname, ZIPARCHIVE::OVERWRITE);
if ($mode == 'mbox') {
$tmpfp = fopen($tmpfname . '.mbox', 'w');
}
foreach ($messages as $key => $value) {
list($uid, $mbox) = explode(':', $key, 2);
$imap->set_folder($mbox);
if ($mode == 'mbox') {
fwrite($tmpfp, $value);
// 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
$tmpfn = rcube_utils::temp_filename('zipmessage');
$tmpfp = fopen($tmpfn, 'w');
$imap->get_raw_body($uid, $tmpfp);
$tempfiles[] = $tmpfn;
fclose($tmpfp);
$zip->addFile($tmpfn, $value);
}
}
$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)
{
$rcmail = rcmail::get_instance();
$rcmail->output->download_headers($filename, array('length' => filesize($tmpfname)));
readfile($tmpfname);
}
/**
* Helper function to convert filenames to the configured charset
*/
private function _convert_filename($str)
{
$str = strtr($str, array(':' => '', '/' => '-'));
return rcube_charset::convert($str, RCUBE_CHARSET, $this->charset);
}
/**
* Helper function to convert message subject into filename
*/
private function _filename_from_subject($str)
{
$str = preg_replace('/[\t\n\r\0\x0B]+\s*/', ' ', $str);
return trim($str, " ./_");
}
}
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;
}
}

File Metadata

Mime Type
text/x-php
Expires
Mon, Apr 6, 2:07 AM (1 w, 16 h ago)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
18749565
Default Alt Text
zipdownload.php (13 KB)

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