nextcloud/apps/files_sharing/public.php

76 lines
3.0 KiB
PHP

<?php
// Load other apps for file previews
OC_App::loadApps();
if (isset($_GET['file'])) {
$pos = strpos($_GET['file'], '/', 1);
$uidOwner = substr($_GET['file'], 1, $pos - 1);
if (OCP\User::userExists($uidOwner)) {
OC_Util::tearDownFS();
OC_Util::setupFS($uidOwner);
$file = substr($_GET['file'], $pos);
$fileSource = OC_Filecache::getId($_GET['file'], '');
if ($linkItem = OCP\Share::getItemSharedWithByLink('file', $fileSource, $uidOwner)) {
if (isset($linkItem['share_with'])) {
// Check password
if (isset($_POST['password'])) {
$password = $_POST['password'];
$storedHash = $linkItem['share_with'];
$forcePortable = (CRYPT_BLOWFISH != 1);
$hasher = new PasswordHash(8, $forcePortable);
if (!($hasher->CheckPassword($password.OC_Config::getValue('passwordsalt', ''), $storedHash))) {
$tmpl = new OCP\Template('files_sharing', 'authenticate', 'guest');
$tmpl->assign('URL', OCP\Util::linkToPublic('files').'&file='.$_GET['file']);
$tmpl->assign('error', true);
$tmpl->printPage();
exit();
} else {
// Save item id in session for future requests
$_SESSION['public_link_authenticated'] = $linkItem['id'];
}
// Check if item id is set in session
} else if (!isset($_SESSION['public_link_authenticated']) || $_SESSION['public_link_authenticated'] !== $linkItem['id']) {
// Prompt for password
$tmpl = new OCP\Template('files_sharing', 'authenticate', 'guest');
$tmpl->assign('URL', OCP\Util::linkToPublic('files').'&file='.$_GET['file']);
$tmpl->printPage();
exit();
}
}
$path = $linkItem['path'];
// Download the file
if (isset($_GET['download'])) {
$mimetype = OC_Filesystem::getMimeType($path);
header('Content-Transfer-Encoding: binary');
header('Content-Disposition: attachment; filename="'.basename($path).'"');
header('Content-Type: '.$mimetype);
header('Content-Length: '.OC_Filesystem::filesize($path));
OCP\Response::disableCaching();
@ob_clean();
OC_Filesystem::readfile($path);
} else {
OCP\Util::addStyle('files_sharing', 'public');
OCP\Util::addScript('files_sharing', 'public');
OCP\Util::addScript('files', 'fileactions');
$tmpl = new OCP\Template('files_sharing', 'public', 'base');
$tmpl->assign('details', $uidOwner.' shared the file '.basename($path).' with you');
$tmpl->assign('owner', $uidOwner);
$tmpl->assign('name', basename($path));
// Show file list
if (OC_Filesystem::is_dir($path)) {
// TODO
} else {
// Show file preview if viewer is available
$tmpl->assign('dir', dirname($path));
$tmpl->assign('filename', basename($path));
$tmpl->assign('mimetype', OC_Filesystem::getMimeType($path));
$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files').'&file='.$_GET['file'].'&download');
}
$tmpl->printPage();
}
exit();
}
}
}
header('HTTP/1.0 404 Not Found');
$tmpl = new OCP\Template('', '404', 'guest');
$tmpl->printPage();