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<?php
namespace Zotlabs\Module;
use ZipArchive;
use Zotlabs\Web\Controller;
use Zotlabs\Lib\Verify;
require_once('include/security.php');
require_once('include/attach.php');
class Attach extends Controller {
function post() {
$attach_ids = ((x($_REQUEST, 'attach_ids')) ? $_REQUEST['attach_ids'] : []);
$attach_path = ((x($_REQUEST, 'attach_path')) ? $_REQUEST['attach_path'] : '');
$download_token = ((x($_REQUEST, 'download_token')) ? $_REQUEST['download_token'] : '');
$channel_id = ((x($_REQUEST, 'channel_id')) ? intval($_REQUEST['channel_id']) : 0);
$channel = channelx_by_n($channel_id);
if (! $channel) {
notice(t('Channel not found.') . EOL);
return;
}
$strip_str = '/cloud/' . $channel['channel_address'] . '/';
$count = strlen($strip_str);
$attach_path = substr($attach_path, $count);
if ($attach_ids) {
$zip_dir = 'store/[data]/' . $channel['channel_address'] . '/tmp';
if (! is_dir($zip_dir))
mkdir($zip_dir, STORAGE_DEFAULT_PERMISSIONS, true);
$token = random_string(32);
$zip_file = 'download_' . $token . '.zip';
$zip_path = $zip_dir . '/' . $zip_file;
$zip = new ZipArchive();
if ($zip->open($zip_path, ZipArchive::CREATE) === true) {
$zip_filename = self::zip_archive_handler($zip, $attach_ids, $attach_path);
$zip->close();
$meta = [
'zip_filename' => $zip_filename,
'zip_path' => $zip_path
];
Verify::create('zip_token', 0, $token, json_encode($meta));
Verify::create('download_token', 0, $download_token, $token);
json_return_and_die([
'success' => true,
'token' => $token
]);
}
}
}
function get() {
if(argc() < 2) {
notice( t('Item not available.') . EOL);
return;
}
$token = ((x($_REQUEST, 'token')) ? $_REQUEST['token'] : '');
$download_token = ((x($_REQUEST, 'download_token')) ? $_REQUEST['download_token'] : '');
if(argv(1) === 'check') {
$meta = Verify::get_meta('download_token', 0, $download_token);
if(! $meta)
killme();
json_return_and_die([
'success' => true,
'token' => $meta
]);
}
if(argv(1) === 'download') {
$meta = Verify::get_meta('zip_token', 0, $token);
if(! $meta)
killme();
$meta = json_decode($meta, true);
// make sure we remove the download_token in case we have not checked yet
Verify::get_meta('download_token', 0, $download_token);
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename="'. $meta['zip_filename'] . '"');
header('Content-Length: ' . filesize($meta['zip_path']));
$istream = fopen($meta['zip_path'], 'rb');
$ostream = fopen('php://output', 'wb');
if($istream && $ostream) {
pipe_streams($istream, $ostream);
fclose($istream);
fclose($ostream);
}
unlink($meta['zip_path']);
killme();
}
$r = attach_by_hash(argv(1),get_observer_hash(),((argc() > 2) ? intval(argv(2)) : 0));
if(! $r['success']) {
notice( $r['message'] . EOL);
return;
}
$c = q("select channel_address from channel where channel_id = %d limit 1",
intval($r['data']['uid'])
);
if(! $c)
return;
$unsafe_types = array('text/html','text/css','application/javascript');
if(in_array($r['data']['filetype'],$unsafe_types) && (! channel_codeallowed($r['data']['uid']))) {
header('Content-Type: text/plain');
}
else {
header('Content-Type: ' . $r['data']['filetype']);
}
header('Content-Disposition: attachment; filename="' . $r['data']['filename'] . '"');
if(intval($r['data']['os_storage'])) {
$fname = $r['data']['content'];
if(strpos($fname,'store') !== false)
$istream = fopen($fname,'rb');
else
$istream = fopen('store/' . $c[0]['channel_address'] . '/' . $fname,'rb');
$ostream = fopen('php://output','wb');
if($istream && $ostream) {
pipe_streams($istream, $ostream);
fclose($istream);
fclose($ostream);
}
}
else
echo $r['data']['content'];
killme();
}
public function zip_archive_handler($zip, $attach_ids, $attach_path, $pass = 1) {
$observer_hash = get_observer_hash();
$single = ((count($attach_ids) == 1) ? true : false);
$download_name = 'download.zip';
foreach($attach_ids as $attach_id) {
$r = attach_by_id($attach_id, $observer_hash);
if (! $r['success']) {
continue;
}
if ($r['data']['is_dir'] && $single && $pass === 1)
$download_name = $r['data']['filename'] . '.zip';
$zip_path = $r['data']['display_path'];
if ($attach_path) {
$strip_str = $attach_path . '/';
$count = strlen($strip_str);
$zip_path = substr($r['data']['display_path'], $count);
}
if ($r['data']['is_dir']) {
$zip->addEmptyDir($zip_path);
$d = q("SELECT id FROM attach WHERE folder = '%s'",
dbesc($r['data']['hash'])
);
$attach_ids = ids_to_array($d);
self::zip_archive_handler($zip, $attach_ids, $attach_path, $pass++);
}
else {
$file_path = $r['data']['content'];
$zip->addFile($file_path, $zip_path);
// compressing can be ressource intensive - just store the data
$zip->setCompressionName($zip_path, ZipArchive::CM_STORE);
}
}
return $download_name;
}
}
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