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nextcloud/apps/files_sharing/public.php

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