299 lines
11 KiB
PHP
299 lines
11 KiB
PHP
<?php
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// Load other apps for file previews
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OC_App::loadApps();
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// Compatibility with shared-by-link items from ownCloud 4.0
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// requires old Sharing table !
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// support will be removed in OC 5.0,a
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if (isset($_GET['token'])) {
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unset($_GET['file']);
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$qry = \OC_DB::prepare('SELECT `source` FROM `*PREFIX*sharing` WHERE `target` = ?', 1);
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$filepath = $qry->execute(array($_GET['token']))->fetchOne();
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if(isset($filepath)) {
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$info = OC_FileCache_Cached::get($filepath, '');
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if(strtolower($info['mimetype']) == 'httpd/unix-directory') {
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$_GET['dir'] = $filepath;
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} else {
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$_GET['file'] = $filepath;
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}
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\OCP\Util::writeLog('files_sharing', 'You have files that are shared by link originating from ownCloud 4.0.'
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.' Redistribute the new links, because backwards compatibility will be removed in ownCloud 5.',
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\OCP\Util::WARN);
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}
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}
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function getID($path) {
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// use the share table from the db to find the item source if the file was reshared because shared files
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//are not stored in the file cache.
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if (substr(OC_Filesystem::getMountPoint($path), -7, 6) == "Shared") {
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$path_parts = explode('/', $path, 5);
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$user = $path_parts[1];
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$intPath = '/'.$path_parts[4];
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$query = \OC_DB::prepare('SELECT `item_source`'
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.' FROM `*PREFIX*share`'
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.' WHERE `uid_owner` = ?'
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.' AND `file_target` = ? ');
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$result = $query->execute(array($user, $intPath));
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$row = $result->fetchRow();
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$fileSource = $row['item_source'];
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} else {
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$fileSource = OC_Filecache::getId($path, '');
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}
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return $fileSource;
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}
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// Enf of backward compatibility
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/**
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* lookup file path and owner by fetching it from the fscache
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* needed becaus OC_FileCache::getPath($id, $user) already requires the user
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* @param int $id
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* @return array
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*/
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function getPathAndUser($id) {
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$query = \OC_DB::prepare('SELECT `user`, `path` FROM `*PREFIX*fscache` WHERE `id` = ?');
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$result = $query->execute(array($id));
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$row = $result->fetchRow();
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return $row;
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}
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if (isset($_GET['t'])) {
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$token = $_GET['t'];
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$linkItem = OCP\Share::getShareByToken($token);
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if (is_array($linkItem) && isset($linkItem['uid_owner'])) {
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// seems to be a valid share
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$type = $linkItem['item_type'];
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$fileSource = $linkItem['file_source'];
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$shareOwner = $linkItem['uid_owner'];
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if (OCP\User::userExists($shareOwner) && $fileSource != -1 ) {
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$pathAndUser = getPathAndUser($linkItem['file_source']);
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$fileOwner = $pathAndUser['user'];
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//if this is a reshare check the file owner also exists
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if ($shareOwner != $fileOwner && ! OCP\User::userExists($fileOwner)) {
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OCP\Util::writeLog('share', 'original file owner '.$fileOwner
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.' does not exist for share '.$linkItem['id'], \OCP\Util::ERROR);
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header('HTTP/1.0 404 Not Found');
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$tmpl = new OCP\Template('', '404', 'guest');
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$tmpl->printPage();
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exit();
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}
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//mount filesystem of file owner
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OC_Util::setupFS($fileOwner);
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}
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}
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} else if (isset($_GET['file']) || isset($_GET['dir'])) {
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OCP\Util::writeLog('share', 'Missing token, trying fallback file/dir links', \OCP\Util::DEBUG);
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if (isset($_GET['dir'])) {
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$type = 'folder';
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$path = $_GET['dir'];
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if(strlen($path)>1 and substr($path, -1, 1)==='/') {
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$path=substr($path, 0, -1);
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}
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$baseDir = $path;
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$dir = $baseDir;
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} else {
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$type = 'file';
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$path = $_GET['file'];
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if(strlen($path)>1 and substr($path, -1, 1)==='/') {
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$path=substr($path, 0, -1);
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}
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}
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$shareOwner = substr($path, 1, strpos($path, '/', 1) - 1);
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if (OCP\User::userExists($shareOwner)) {
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OC_Util::setupFS($shareOwner);
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$fileSource = getId($path);
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if ($fileSource != -1 ) {
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$linkItem = OCP\Share::getItemSharedWithByLink($type, $fileSource, $shareOwner);
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$pathAndUser['path'] = $path;
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$path_parts = explode('/', $path, 5);
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$pathAndUser['user'] = $path_parts[1];
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$fileOwner = $path_parts[1];
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}
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}
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}
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if ($linkItem) {
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if (!isset($linkItem['item_type'])) {
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OCP\Util::writeLog('share', 'No item type set for share id: '.$linkItem['id'], \OCP\Util::ERROR);
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header('HTTP/1.0 404 Not Found');
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$tmpl = new OCP\Template('', '404', 'guest');
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$tmpl->printPage();
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exit();
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}
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if (isset($linkItem['share_with'])) {
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// Authenticate share_with
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$url = OCP\Util::linkToPublic('files').'&t='.$token;
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if (isset($_GET['file'])) {
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$url .= '&file='.urlencode($_GET['file']);
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} else if (isset($_GET['dir'])) {
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$url .= '&dir='.urlencode($_GET['dir']);
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}
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if (isset($_POST['password'])) {
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$password = $_POST['password'];
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if ($linkItem['share_type'] == OCP\Share::SHARE_TYPE_LINK) {
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// Check Password
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$forcePortable = (CRYPT_BLOWFISH != 1);
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$hasher = new PasswordHash(8, $forcePortable);
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if (!($hasher->CheckPassword($password.OC_Config::getValue('passwordsalt', ''),
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$linkItem['share_with']))) {
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$tmpl = new OCP\Template('files_sharing', 'authenticate', 'guest');
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$tmpl->assign('URL', $url);
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$tmpl->assign('error', true);
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$tmpl->printPage();
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exit();
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} else {
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// Save item id in session for future requests
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$_SESSION['public_link_authenticated'] = $linkItem['id'];
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}
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} else {
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OCP\Util::writeLog('share', 'Unknown share type '.$linkItem['share_type']
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.' for share id '.$linkItem['id'], \OCP\Util::ERROR);
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header('HTTP/1.0 404 Not Found');
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$tmpl = new OCP\Template('', '404', 'guest');
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$tmpl->printPage();
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exit();
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}
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} else {
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// Check if item id is set in session
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if (!isset($_SESSION['public_link_authenticated'])
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|| $_SESSION['public_link_authenticated'] !== $linkItem['id']
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) {
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// Prompt for password
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$tmpl = new OCP\Template('files_sharing', 'authenticate', 'guest');
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$tmpl->assign('URL', $url);
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$tmpl->printPage();
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exit();
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}
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}
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}
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$basePath = substr($pathAndUser['path'], strlen('/'.$fileOwner.'/files'));
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$path = $basePath;
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if (isset($_GET['path'])) {
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$path .= $_GET['path'];
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}
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if (!$path || !OC_Filesystem::isValidPath($path) || !OC_Filesystem::file_exists($path)) {
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OCP\Util::writeLog('share', 'Invalid path '.$path.' for share id '.$linkItem['id'], \OCP\Util::ERROR);
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header('HTTP/1.0 404 Not Found');
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$tmpl = new OCP\Template('', '404', 'guest');
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$tmpl->printPage();
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exit();
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}
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$dir = dirname($path);
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$file = basename($path);
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// Download the file
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if (isset($_GET['download'])) {
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if (isset($_GET['path']) && $_GET['path'] !== '' ) {
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if ( isset($_GET['files']) ) { // download selected files
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OC_Files::get($path, $_GET['files'], $_SERVER['REQUEST_METHOD'] == 'HEAD' ? true : false);
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} else if (isset($_GET['path']) && $_GET['path'] != '' ) { // download a file from a shared directory
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OC_Files::get($dir, $file, $_SERVER['REQUEST_METHOD'] == 'HEAD' ? true : false);
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} else { // download the whole shared directory
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OC_Files::get($dir, $file, $_SERVER['REQUEST_METHOD'] == 'HEAD' ? true : false);
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}
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} else { // download a single shared file
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OC_Files::get($dir, $file, $_SERVER['REQUEST_METHOD'] == 'HEAD' ? true : false);
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}
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} else {
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OCP\Util::addStyle('files_sharing', 'public');
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OCP\Util::addScript('files_sharing', 'public');
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OCP\Util::addScript('files', 'fileactions');
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$tmpl = new OCP\Template('files_sharing', 'public', 'base');
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$tmpl->assign('uidOwner', $shareOwner);
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$tmpl->assign('dir', $dir);
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$tmpl->assign('filename', $file);
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$tmpl->assign('mimetype', OC_Filesystem::getMimeType($path));
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if (isset($_GET['path'])) {
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$getPath = $_GET['path'];
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} else {
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$getPath = '';
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}
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//
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$urlLinkIdentifiers= (isset($token)?'&t='.$token:'')
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.(isset($_GET['dir'])?'&dir='.$_GET['dir']:'')
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.(isset($_GET['file'])?'&file='.$_GET['file']:'');
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// Show file list
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if (OC_Filesystem::is_dir($path)) {
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OCP\Util::addStyle('files', 'files');
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OCP\Util::addScript('files', 'files');
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OCP\Util::addScript('files', 'filelist');
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$files = array();
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$rootLength = strlen($basePath) + 1;
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foreach (OC_Files::getDirectoryContent($path) as $i) {
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$i['date'] = OCP\Util::formatDate($i['mtime']);
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if ($i['type'] == 'file') {
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$fileinfo = pathinfo($i['name']);
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$i['basename'] = $fileinfo['filename'];
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$i['extension'] = isset($fileinfo['extension']) ? ('.'.$fileinfo['extension']) : '';
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}
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$i['directory'] = '/'.substr($i['directory'], $rootLength);
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if ($i['directory'] == '/') {
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$i['directory'] = '';
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}
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$i['permissions'] = OCP\PERMISSION_READ;
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$files[] = $i;
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}
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// Make breadcrumb
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$breadcrumb = array();
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$pathtohere = '';
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//add base breadcrumb
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$breadcrumb[] = array('dir' => '/', 'name' => basename($basePath));
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//add subdir breadcrumbs
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foreach (explode('/', urldecode($getPath)) as $i) {
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if ($i != '') {
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$pathtohere .= '/'.$i;
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$breadcrumb[] = array('dir' => $pathtohere, 'name' => $i);
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}
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}
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$list = new OCP\Template('files', 'part.list', '');
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$list->assign('files', $files, false);
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$list->assign('publicListView', true);
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$list->assign('baseURL', OCP\Util::linkToPublic('files').$urlLinkIdentifiers.'&path=', false);
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$list->assign('downloadURL', OCP\Util::linkToPublic('files').$urlLinkIdentifiers.'&download&path=', false);
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$breadcrumbNav = new OCP\Template('files', 'part.breadcrumb', '' );
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$breadcrumbNav->assign('breadcrumb', $breadcrumb, false);
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$breadcrumbNav->assign('baseURL', OCP\Util::linkToPublic('files').$urlLinkIdentifiers.'&path=', false);
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$folder = new OCP\Template('files', 'index', '');
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$folder->assign('fileList', $list->fetchPage(), false);
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$folder->assign('breadcrumb', $breadcrumbNav->fetchPage(), false);
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$folder->assign('dir', basename($dir));
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$folder->assign('isCreatable', false);
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$folder->assign('permissions', 0);
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$folder->assign('files', $files);
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$folder->assign('uploadMaxFilesize', 0);
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$folder->assign('uploadMaxHumanFilesize', 0);
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$folder->assign('allowZipDownload', intval(OCP\Config::getSystemValue('allowZipDownload', true)));
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$tmpl->assign('folder', $folder->fetchPage(), false);
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$tmpl->assign('allowZipDownload', intval(OCP\Config::getSystemValue('allowZipDownload', true)));
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$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files')
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.$urlLinkIdentifiers.'&download&path='.urlencode($getPath));
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} else {
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// Show file preview if viewer is available
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if ($type == 'file') {
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$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files')
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.$urlLinkIdentifiers.'&download');
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} else {
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$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files')
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.$urlLinkIdentifiers.'&download&path='.urlencode($getPath));
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}
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}
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$tmpl->printPage();
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}
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exit();
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} else {
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OCP\Util::writeLog('share', 'could not resolve linkItem', \OCP\Util::DEBUG);
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}
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header('HTTP/1.0 404 Not Found');
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$tmpl = new OCP\Template('', '404', 'guest');
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$tmpl->printPage();
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