Roundcube - Import mbox backup file from Gmail

import_mbox.php

<?php

/* Usage: php import.php EMAIL PASSWORD /path/to/file.mbox */

$argv = $_SERVER['argv'];
array_shift($argv); // script name

$user = array_shift($argv);
if (!$user) {
    die("EMAIL IS MISSING.\n");
}

$pass = array_shift($argv);
if (!$pass) {
    die("PASSWORD IS MISSING.\n");
}

$file = array_shift($argv);
if (!$file) {
    die("FILENAME IS MISSING.\n");
} elseif (!(file_exists($file) && is_file($file))) {
    die("INVALID FILE.\n");
}

$destinationFolder = 'RECUPERADAS';

// <editor-fold defaultstate="collapsed" desc="1.) BOOTSTRAP DO ROUNDCUBE">
require_once 'program/include/iniset.php';

// init application, start session, init output class, etc.
$RCMAIL = rcmail::get_instance(0, $GLOBALS['env']);

// check if config files had errors
if ($err_str = $RCMAIL->config->get_error()) {
    echo "CONFIG ERROR\n";
    rcmail::raise_error(array(
        'code' => 601,
        'type' => 'php',
        'message' => $err_str), false, true);
}

// check DB connections and exit on failure
if ($err_str = $RCMAIL->db->is_error()) {
    echo "DATABASE ERROR\n";
    rcmail::raise_error(array(
        'code' => 603,
        'type' => 'db',
        'message' => $err_str), false, true);
}
// </editor-fold>

// <editor-fold defaultstate="collapsed" desc="2.) AUTENTICAÇÃO DO USUÁRIO">
$RCMAIL->kill_session();

$auth = $RCMAIL->plugins->exec_hook('authenticate', array(
    'host' => $RCMAIL->autoselect_host(),
    'user' => $user,
    'pass' => $pass,
    'cookiecheck' => false,
    'valid' => true,
));

if ($auth['valid'] && !$auth['abort'] && $RCMAIL->login($auth['user'], $auth['pass'], $auth['host'], $auth['cookiecheck'])
) {
    echo "LOGIN OK\n";
} else {
    die("ERRO NO LOGIN\n");
}
// </editor-fold>

// <editor-fold defaultstate="collapsed" desc="3.) ABRIR ARQUIVO">
$imported = 0;

// 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)) {
    die("ERRO NO preg_match\n");
}
// </editor-fold>

ini_set('display_errors', 1);
error_reporting(E_ALL & ~E_NOTICE);
set_time_limit(0);

$folder = array(
    'name' => $destinationFolder,
    'oldname' => null,
    'class' => '',
    'options' => array(),
    'settings' => array('view_mode' => 0, 'sort_column' => null, 'sort_order' => null,),
    'subscribe' => true,
);

$STORAGE = $RCMAIL->get_storage();
$RCMAIL->plugins->exec_hook('folder_create', array('record' => $folder));

$created = $STORAGE->create_folder($folder['name'], $folder['subscribe']);
$folders = array();

// <editor-fold defaultstate="collapsed" desc="4.) IMPORTAR MENSAGENS">
$message = $lastline = $folderName = $date = '';
fseek($fp, 0);
while (($line = fgets($fp)) !== false) {
    $line = utf8_decode($line);

    // importing mbox file, split by From - lines
    if (strncmp($line, 'X-Gmail-Labels: ', 16) === 0 && strlen($line) > 16) {
        $folderName = trim(substr($line, 16));
        $folder['name'] = "{$destinationFolder}." . $folderName;
        if (!array_key_exists($folderName, $folders)) {
            $RCMAIL->plugins->exec_hook('folder_create', array('record' => $folder));
            $created = $STORAGE->create_folder($folder['name'], $folder['subscribe']);
            $folders[$folderName] = $folderName;
        }
    }

    if ($lastline === '' && strncmp($line, 'From ', 5) === 0 && strlen($line) > 5) {
        if (!$date) {
            $exp = explode(' ', $line);
            $date = implode(' ', array_slice($exp, 2));
        }
        if (!empty($message)) {
            // unquote ">From " lines in message body
            $message = rtrim(preg_replace('/\n>([>]*)From /', "\n\\1From ", $message));

            if ($RCMAIL->storage->save_message($folder['name'], $message, '', false, array(), $date)) {
                $imported++;
                echo $imported, PHP_EOL;
            } else {
                rcube::raise_error("Failed to import message to " . $RCMAIL->storage->get_folder(), false, true);
            }
            $message = '';
            $date = '';
            $folder['name'] = $destinationFolder;
        }
        continue;
    }

    $message .= $line;
    $lastline = rtrim($line);
}

$message = rtrim($message);
if (!empty($message) && $RCMAIL->storage->save_message($folder['name'], $message, '', false, array(), $date)) {
    $imported++;
    echo 'end ' . $imported . PHP_EOL;
}
// </editor-fold>

// <editor-fold defaultstate="collapsed" desc="5.) FIM">
if ($imported) {
    echo "FORAM IMPORTADAS {$imported} mensagens.\n";
    $OUTPUT->command('command', 'list');
} else {
    echo "ERRO AO IMPORTAR AS MENSAGENS.\n";
}
// </editor-fold>