/**
* Delete a share
*
* @param \OCP\Share\IShare $share
* @throws ShareNotFound
* @throws \InvalidArgumentException
*/
public function deleteShare(\OCP\Share\IShare $share)
{
try {
$share->getFullId();
} catch (\UnexpectedValueException $e) {
throw new \InvalidArgumentException('Share does not have a full id');
}
$formatHookParams = function (\OCP\Share\IShare $share) {
// Prepare hook
$shareType = $share->getShareType();
$sharedWith = '';
if ($shareType === \OCP\Share::SHARE_TYPE_USER) {
$sharedWith = $share->getSharedWith();
} else {
if ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
$sharedWith = $share->getSharedWith();
} else {
if ($shareType === \OCP\Share::SHARE_TYPE_REMOTE) {
$sharedWith = $share->getSharedWith();
}
}
}
$hookParams = ['id' => $share->getId(), 'itemType' => $share->getNodeType(), 'itemSource' => $share->getNodeId(), 'shareType' => $shareType, 'shareWith' => $sharedWith, 'itemparent' => method_exists($share, 'getParent') ? $share->getParent() : '', 'uidOwner' => $share->getSharedBy(), 'fileSource' => $share->getNodeId(), 'fileTarget' => $share->getTarget()];
return $hookParams;
};
$hookParams = $formatHookParams($share);
// Emit pre-hook
\OC_Hook::emit('OCP\\Share', 'pre_unshare', $hookParams);
// Get all children and delete them as well
$deletedShares = $this->deleteChildren($share);
// Do the actual delete
$provider = $this->factory->getProviderForType($share->getShareType());
$provider->delete($share);
// All the deleted shares caused by this delete
$deletedShares[] = $share;
//Format hook info
$formattedDeletedShares = array_map(function ($share) use($formatHookParams) {
return $formatHookParams($share);
}, $deletedShares);
$hookParams['deletedShares'] = $formattedDeletedShares;
// Emit post hook
\OC_Hook::emit('OCP\\Share', 'post_unshare', $hookParams);
}
/**
* Share a path
*
* @param IShare $share
* @return IShare The share object
* @throws ShareNotFound
* @throws \Exception
*/
public function create(IShare $share)
{
$shareWith = $share->getSharedWith();
$itemSource = $share->getNodeId();
$itemType = $share->getNodeType();
$uidOwner = $share->getShareOwner();
$permissions = $share->getPermissions();
$sharedBy = $share->getSharedBy();
/*
* Check if file is not already shared with the remote user
*/
$alreadyShared = $this->getSharedWith($shareWith, self::SHARE_TYPE_REMOTE, $share->getNode(), 1, 0);
if (!empty($alreadyShared)) {
$message = 'Sharing %s failed, because this item is already shared with %s';
$message_t = $this->l->t('Sharing %s failed, because this item is already shared with %s', array($share->getNode()->getName(), $shareWith));
$this->logger->debug(sprintf($message, $share->getNode()->getName(), $shareWith), ['app' => 'Federated File Sharing']);
throw new \Exception($message_t);
}
// don't allow federated shares if source and target server are the same
list($user, $remote) = $this->addressHandler->splitUserRemote($shareWith);
$currentServer = $this->addressHandler->generateRemoteURL();
$currentUser = $sharedBy;
if ($this->addressHandler->compareAddresses($user, $remote, $currentUser, $currentServer)) {
$message = 'Not allowed to create a federated share with the same user.';
$message_t = $this->l->t('Not allowed to create a federated share with the same user');
$this->logger->debug($message, ['app' => 'Federated File Sharing']);
throw new \Exception($message_t);
}
$token = $this->tokenHandler->generateToken();
$shareWith = $user . '@' . $remote;
$shareId = $this->addShareToDB($itemSource, $itemType, $shareWith, $sharedBy, $uidOwner, $permissions, $token);
$send = $this->notifications->sendRemoteShare($token, $shareWith, $share->getNode()->getName(), $shareId, $share->getSharedBy());
$data = $this->getRawShare($shareId);
$share = $this->createShare($data);
if ($send === false) {
$this->delete($share);
$message_t = $this->l->t('Sharing %s failed, could not find %s, maybe the server is currently unreachable.', [$share->getNode()->getName(), $shareWith]);
throw new \Exception($message_t);
}
return $share;
}
/**
* return share type, can be "file" or "folder"
*
* @return string
*/
public function getItemType()
{
return $this->superShare->getNodeType();
}
/**
* throws hooks when a share is attempted to be accessed
*
* @param \OCP\Share\IShare|string $share the Share instance if available,
* otherwise token
* @param int $errorCode
* @param string $errorMessage
* @throws OC\HintException
* @throws OC\ServerNotAvailableException
*/
protected function emitAccessShareHook($share, $errorCode = 200, $errorMessage = '')
{
$itemType = $itemSource = $uidOwner = '';
$token = $share;
$exception = null;
if ($share instanceof \OCP\Share\IShare) {
try {
$token = $share->getToken();
$uidOwner = $share->getSharedBy();
$itemType = $share->getNodeType();
$itemSource = $share->getNodeId();
} catch (\Exception $e) {
// we log what we know and pass on the exception afterwards
$exception = $e;
}
}
\OC_Hook::emit('OCP\\Share', 'share_link_access', ['itemType' => $itemType, 'itemSource' => $itemSource, 'uidOwner' => $uidOwner, 'token' => $token, 'errorCode' => $errorCode, 'errorMessage' => $errorMessage]);
if (!is_null($exception)) {
throw $exception;
}
}
/**
* Makes sure an item type was set for that token
*
* @param IShare $share
*
* @throws CheckException
*/
private function checkItemType($share)
{
if ($share->getNodeType() === null) {
$message = 'No item type set for share id: ' . $share->getId();
throw new CheckException($message, Http::STATUS_NOT_FOUND);
}
}
/**
* create federated share and inform the recipient
*
* @param IShare $share
* @return int
* @throws ShareNotFound
* @throws \Exception
*/
protected function createFederatedShare(IShare $share)
{
$token = $this->tokenHandler->generateToken();
$shareId = $this->addShareToDB($share->getNodeId(), $share->getNodeType(), $share->getSharedWith(), $share->getSharedBy(), $share->getShareOwner(), $share->getPermissions(), $token);
$sharedByFederatedId = $share->getSharedBy();
if ($this->userManager->userExists($sharedByFederatedId)) {
$sharedByFederatedId = $sharedByFederatedId . '@' . $this->addressHandler->generateRemoteURL();
}
$send = $this->notifications->sendRemoteShare($token, $share->getSharedWith(), $share->getNode()->getName(), $shareId, $share->getShareOwner(), $share->getShareOwner() . '@' . $this->addressHandler->generateRemoteURL(), $share->getSharedBy(), $sharedByFederatedId);
if ($send === false) {
$data = $this->getRawShare($shareId);
$share = $this->createShareObject($data);
$this->removeShareFromTable($share);
$message_t = $this->l->t('Sharing %s failed, could not find %s, maybe the server is currently unreachable.', [$share->getNode()->getName(), $share->getSharedWith()]);
throw new \Exception($message_t);
}
return $shareId;
}
/**
* create federated share and inform the recipient
*
* @param IShare $share
* @return int
* @throws ShareNotFound
* @throws \Exception
*/
protected function createFederatedShare(IShare $share)
{
$token = $this->tokenHandler->generateToken();
$shareId = $this->addShareToDB($share->getNodeId(), $share->getNodeType(), $share->getSharedWith(), $share->getSharedBy(), $share->getShareOwner(), $share->getPermissions(), $token);
try {
$sharedByFederatedId = $share->getSharedBy();
if ($this->userManager->userExists($sharedByFederatedId)) {
$sharedByFederatedId = $sharedByFederatedId . '@' . $this->addressHandler->generateRemoteURL();
}
$send = $this->notifications->sendRemoteShare($token, $share->getSharedWith(), $share->getNode()->getName(), $shareId, $share->getShareOwner(), $share->getShareOwner() . '@' . $this->addressHandler->generateRemoteURL(), $share->getSharedBy(), $sharedByFederatedId);
if ($send === false) {
$message_t = $this->l->t('Sharing %s failed, could not find %s, maybe the server is currently unreachable.', [$share->getNode()->getName(), $share->getSharedWith()]);
throw new \Exception($message_t);
}
} catch (\Exception $e) {
$this->logger->error('Failed to notify remote server of federated share, removing share (' . $e->getMessage() . ')');
$this->removeShareFromTableById($shareId);
throw $e;
}
return $shareId;
}
