/**
* Create new genesis document
* @param OCA\Documents\File $file
* */
public function __construct(\OCA\Documents\File $file)
{
list($view, $path) = $file->getOwnerViewAndPath();
$owner = $file->getOwner();
$this->view = new View('/' . $owner);
if (!$this->view->file_exists(self::DOCUMENTS_DIRNAME)) {
$this->view->mkdir(self::DOCUMENTS_DIRNAME);
}
$this->hash = $this->getDocumentHash($view, $path);
$this->path = self::DOCUMENTS_DIRNAME . '/' . $this->hash . '.odt';
if (!$this->view->file_exists($this->path)) {
//copy new genesis to /user/documents/{hash}.odt
// get decrypted content
$content = $view->file_get_contents($path);
$mimetype = $view->getMimeType($path);
$data = Filter::read($content, $mimetype);
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$this->view->file_put_contents($this->path, $data['content']);
\OC_FileProxy::$enabled = $proxyStatus;
}
try {
$this->validate($this->view, $this->path);
} catch (\Exception $e) {
throw new \Exception('Failed to copy genesis');
}
}
/**
* Start a editing session or return an existing one
* @param string $uid of the user starting a session
* @param \OCA\Documents\File $file - file object
* @return array
* @throws \Exception
*/
public static function start($uid, $file)
{
// Create a directory to store genesis
$genesis = new Genesis($file);
list($ownerView, $path) = $file->getOwnerViewAndPath();
$oldSession = new Db_Session();
$oldSession->loadBy('file_id', $file->getFileId());
//If there is no existing session we need to start a new one
if (!$oldSession->hasData()) {
$newSession = new Db_Session(array($genesis->getPath(), $genesis->getHash(), $file->getOwner(), $file->getFileId()));
if (!$newSession->insert()) {
throw new \Exception('Failed to add session into database');
}
}
$sessionData = $oldSession->loadBy('file_id', $file->getFileId())->getData();
$memberColor = Helper::getMemberColor($uid);
$member = new Db_Member(array($sessionData['es_id'], $uid, $memberColor, time(), intval($file->isPublicShare()), $file->getToken()));
if ($member->insert()) {
// Do we have OC_Avatar in out disposal?
if (!class_exists('\\OC_Avatar') || \OC_Config::getValue('enable_avatars', true) !== true) {
$imageUrl = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAAAAACH5BAAAAAAALAAAAAABAAEAAAICTAEAOw==';
} else {
$imageUrl = $uid;
}
$displayName = $file->isPublicShare() ? $uid . ' ' . Db_Member::getGuestPostfix() : \OCP\User::getDisplayName($uid);
$sessionData['member_id'] = (string) $member->getLastInsertId();
$op = new Db_Op();
$op->addMember($sessionData['es_id'], $sessionData['member_id'], $displayName, $memberColor, $imageUrl);
} else {
throw new \Exception('Failed to add member into database');
}
$sessionData['title'] = basename($path);
$sessionData['permissions'] = $ownerView->getFilePermissions($path);
return $sessionData;
}
public static function getByShareToken($token)
{
$linkItem = \OCP\Share::getShareByToken($token, false);
if (is_array($linkItem) && isset($linkItem['uid_owner'])) {
// seems to be a valid share
$rootLinkItem = \OCP\Share::resolveReShare($linkItem);
} else {
throw new \Exception('This file was probably unshared');
}
$file = new File($rootLinkItem['file_source'], $rootLinkItem, $token);
if (isset($linkItem['share_with']) && !empty($linkItem['share_with'])) {
$file->setPasswordProtected(true);
}
return $file;
}
/**
* Start a editing session or return an existing one
* @param string $uid of the user starting a session
* @param \OCA\Documents\File $file - file object
* @return array
* @throws \Exception
*/
public static function start($uid, $file)
{
// Create a directory to store genesis
$genesis = new \OCA\Documents\Genesis($file);
list($ownerView, $path) = $file->getOwnerViewAndPath();
$mimetype = $ownerView->getMimeType($path);
if (!Filter::isSupportedMimetype($mimetype)) {
throw new \Exception($path . ' is ' . $mimetype . ' and is not supported by Documents app');
}
$oldSession = new Session();
$oldSession->loadBy('file_id', $file->getFileId());
//If there is no existing session we need to start a new one
if (!$oldSession->hasData()) {
$newSession = new Session(array($genesis->getPath(), $genesis->getHash(), $file->getOwner(), $file->getFileId()));
if (!$newSession->insert()) {
throw new \Exception('Failed to add session into database');
}
}
$sessionData = $oldSession->loadBy('file_id', $file->getFileId())->getData();
$memberColor = \OCA\Documents\Helper::getMemberColor($uid);
$member = new \OCA\Documents\Db\Member(array($sessionData['es_id'], $uid, $memberColor, time(), intval($file->isPublicShare()), $file->getToken()));
if (!$member->insert()) {
throw new \Exception('Failed to add member into database');
}
$sessionData['member_id'] = (string) $member->getLastInsertId();
// Do we have OC_Avatar in out disposal?
if (\OC::$server->getConfig()->getSystemValue('enable_avatars', true) !== true) {
$imageUrl = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAAAAACH5BAAAAAAALAAAAAABAAEAAAICTAEAOw==';
} else {
$imageUrl = $uid;
}
$displayName = $file->isPublicShare() ? $uid . ' ' . \OCA\Documents\Db\Member::getGuestPostfix() : \OC::$server->getUserSession()->getUser()->getDisplayName($uid);
$userId = $file->isPublicShare() ? $displayName : \OC::$server->getUserSession()->getUser()->getUID();
$op = new \OCA\Documents\Db\Op();
$op->addMember($sessionData['es_id'], $sessionData['member_id'], $displayName, $userId, $memberColor, $imageUrl);
$sessionData['title'] = basename($path);
$fileInfo = $ownerView->getFileInfo($path);
$sessionData['permissions'] = $fileInfo->getPermissions();
return $sessionData;
}
/**
* @NoAdminRequired
* @PublicPage
* Store the document content to its origin
*/
public function save()
{
try {
$esId = $this->request->server['HTTP_WEBODF_SESSION_ID'];
if (!$esId) {
throw new \Exception('Session id can not be empty');
}
$memberId = $this->request->server['HTTP_WEBODF_MEMBER_ID'];
$currentMember = new Db\Member();
$currentMember->load($memberId);
//check if member belongs to the session
if ($esId != $currentMember->getEsId()) {
throw new \Exception($memberId . ' does not belong to session ' . $esId);
}
// Extra info for future usage
// $sessionRevision = $this->request->server['HTTP_WEBODF_SESSION_REVISION'];
//NB ouch! New document content is passed as an input stream content
$stream = fopen('php://input', 'r');
if (!$stream) {
throw new \Exception('New content missing');
}
$content = stream_get_contents($stream);
$session = new Db\Session();
$session->load($esId);
if (!$session->getEsId()) {
throw new \Exception('Session does not exist');
}
try {
if ($currentMember->getIsGuest()) {
$file = File::getByShareToken($currentMember->getToken());
} else {
$file = new File($session->getFileId());
}
list($view, $path) = $file->getOwnerViewAndPath(true);
} catch (\Exception $e) {
//File was deleted or unshared. We need to save content as new file anyway
//Sorry, but for guests it would be lost :(
if ($this->uid) {
$view = new View('/' . $this->uid . '/files');
$dir = \OCP\Config::getUserValue($this->uid, 'documents', 'save_path', '');
$path = Helper::getNewFileName($view, $dir . 'New Document.odt');
} else {
throw $e;
}
}
$member = new Db\Member();
$members = $member->getActiveCollection($esId);
$memberIds = array_map(function ($x) {
return $x['member_id'];
}, $members);
// Active users except current user
$memberCount = count($memberIds) - 1;
if ($view->file_exists($path)) {
$currentHash = sha1($view->file_get_contents($path));
if (!Helper::isVersionsEnabled() && $currentHash !== $session->getGenesisHash()) {
// Original file was modified externally. Save to a new one
$path = Helper::getNewFileName($view, $path, '-conflict');
}
$mimetype = $view->getMimeType($path);
} else {
$mimetype = Storage::MIMETYPE_LIBREOFFICE_WORDPROCESSOR;
}
$data = Filter::write($content, $mimetype);
if ($view->file_put_contents($path, $data['content'])) {
// Not a last user
if ($memberCount > 0) {
// Update genesis hash to prevent conflicts
$this->logger->debug('Update hash', array('app' => $this->appName));
$session->updateGenesisHash($esId, sha1($data['content']));
} else {
// Last user. Kill session data
Db\Session::cleanUp($esId);
}
$view->touch($path);
}
$response = array('status' => 'success');
} catch (\Exception $e) {
$this->logger->warning('Saving failed. Reason:' . $e->getMessage(), array('app' => $this->appName));
\OC_Response::setStatus(500);
$response = array();
}
return $response;
}
protected function validateSession($session)
{
try {
if (is_null($this->shareToken)) {
new File($session->getFileId());
} else {
File::getByShareToken($this->shareToken);
}
} catch (\Exception $e) {
$this->logger->warning('Error. Session no longer exists. ' . $e->getMessage(), ['app' => $this->appName]);
$ex = new BadRequestException();
$ex->setBody(implode(',', $this->request->getParams()));
throw $ex;
}
}