import.php
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<?php
/**
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
| |
| Copyright (C) The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
| PURPOSE: |
| Save the uploaded file(s) as messages to the current IMAP folder |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
| Author: Aleksander Machniak <alec@alec.pl> |
+-----------------------------------------------------------------------+
*/
class rcmail_action_mail_import extends rcmail_action
{
// only process ajax requests
protected static $mode = self::MODE_AJAX;
/**
* Request handler.
*
* @param array $args Arguments from the previous step(s)
*/
public function run($args = [])
{
$rcmail = rcmail::get_instance();
// clear all stored output properties (like scripts and env vars)
$rcmail->output->reset();
if (!empty($_FILES['_file']) && is_array($_FILES['_file'])) {
$imported = 0;
$folder = $rcmail->storage->get_folder();
foreach ((array) $_FILES['_file']['tmp_name'] as $i => $filepath) {
// Process uploaded file if there is no error
$err = $_FILES['_file']['error'][$i];
if (!$err) {
// check file content type first
$ctype = rcube_mime::file_content_type($filepath, $_FILES['_file']['name'][$i], $_FILES['_file']['type'][$i]);
list($mtype_primary, $mtype_secondary) = explode('/', $ctype);
if (in_array($ctype, ['application/zip', 'application/x-zip'])) {
$filepath = self::zip_extract($filepath);
if (empty($filepath)) {
continue;
}
}
else if (!in_array($mtype_primary, ['text', 'message'])) {
continue;
}
foreach ((array) $filepath as $file) {
// read the first few lines to detect header-like structure
$fp = fopen($file, 'r');
do {
$line = fgets($fp);
}
while ($line !== false && trim($line) == '');
if (!preg_match('/^From .+/', $line) && !preg_match('/^[a-z-_]+:\s+.+/i', $line)) {
continue;
}
$message = $lastline = '';
fseek($fp, 0);
while (($line = fgets($fp)) !== false) {
// importing mbox file, split by From - lines
if ($lastline === '' && strncmp($line, 'From ', 5) === 0 && strlen($line) > 5) {
if (!empty($message)) {
$imported += (int) self::save_message($folder, $message);
}
$message = $line;
$lastline = '';
continue;
}
$message .= $line;
$lastline = rtrim($line);
}
if (!empty($message)) {
$imported += (int) self::save_message($folder, $message);
}
// remove temp files extracted from zip
if (is_array($filepath)) {
unlink($file);
}
}
}
else {
self::upload_error($err);
}
}
if ($imported) {
$rcmail->output->show_message($rcmail->gettext(['name' => 'importmessagesuccess', 'nr' => $imported, 'vars' => ['nr' => $imported]]), 'confirmation');
$rcmail->output->command('command', 'list');
}
else {
$rcmail->output->show_message('importmessageerror', 'error');
}
}
else {
self::upload_failure();
}
// send html page with JS calls as response
$rcmail->output->send('iframe');
}
public static function zip_extract($path)
{
if (!class_exists('ZipArchive', false)) {
return;
}
$zip = new ZipArchive;
$files = [];
if ($zip->open($path)) {
for ($i = 0; $i < $zip->numFiles; $i++) {
$entry = $zip->getNameIndex($i);
$tmpfname = rcube_utils::temp_filename('zipimport');
if (copy("zip://$path#$entry", $tmpfname)) {
$ctype = rcube_mime::file_content_type($tmpfname, $entry);
list($mtype_primary, ) = explode('/', $ctype);
if (in_array($mtype_primary, ['text', 'message'])) {
$files[] = $tmpfname;
}
else {
unlink($tmpfname);
}
}
}
$zip->close();
}
return $files;
}
public static function save_message($folder, &$message)
{
$date = null;
if (strncmp($message, 'From ', 5) === 0) {
// Extract the mbox from_line
$pos = strpos($message, "\n");
$from = substr($message, 0, $pos);
$message = substr($message, $pos + 1);
// Read the received date, support only known date formats
// RFC4155: "Sat Jan 3 01:05:34 1996"
$mboxdate_rx = '/^([a-z]{3} [a-z]{3} [0-9 ][0-9] [0-9]{2}:[0-9]{2}:[0-9]{2} [0-9]{4})/i';
// Roundcube/Zipdownload: "12-Dec-2016 10:56:33 +0100"
$imapdate_rx = '/^([0-9]{1,2}-[a-z]{3}-[0-9]{4} [0-9]{2}:[0-9]{2}:[0-9]{2} [0-9+-]{5})/i';
if (
($pos = strpos($from, ' ', 6))
&& ($dt_str = substr($from, $pos + 1))
&& (preg_match($mboxdate_rx, $dt_str, $m) || preg_match($imapdate_rx, $dt_str, $m))
) {
try {
$date = new DateTime($m[0], new DateTimeZone('UTC'));
}
catch (Exception $e) {
// ignore
}
}
}
// unquote ">From " lines in message body
$message = preg_replace('/\n>([>]*)From /', "\n\\1From ", $message);
$message = rtrim($message);
$rcmail = rcmail::get_instance();
if ($rcmail->storage->save_message($folder, $message, '', false, [], $date)) {
return true;
}
rcube::raise_error("Failed to import message to $folder", true, false);
return false;
}
}