/**
* Get all children of this share
*
* @param IShare $parent
* @return IShare[]
*/
public function getChildren(IShare $parent)
{
$children = [];
$qb = $this->dbConn->getQueryBuilder();
$qb->select('*')->from('share')->where($qb->expr()->eq('parent', $qb->createParameter('parent')))->setParameter(':parent', $parent->getId())->orderBy('id');
$cursor = $qb->execute();
while ($data = $cursor->fetch()) {
$children[] = $this->createShare($data);
}
$cursor->closeCursor();
return $children;
}
/**
* Verify the password of a public share
*
* @param IShare $share
* @param string $password
* @return bool
*/
public function checkPassword(IShare $share, $password)
{
if ($share->getShareType() !== \OCP\Share::SHARE_TYPE_LINK) {
//TODO maybe exception?
return false;
}
if ($password === null || $share->getPassword() === null) {
return false;
}
$newHash = '';
if (!$this->hasher->verify($password, $share->getPassword(), $newHash)) {
return false;
}
if (!empty($newHash)) {
//TODO update hash!
}
return true;
}
/**
* @param IShare $share
* @return bool
*/
protected function canAccessShare(IShare $share)
{
// A file with permissions 0 can't be accessed by us. So Don't show it
if ($share->getPermissions() === 0) {
return false;
}
// Owner of the file and the sharer of the file can always get share
if ($share->getShareOwner() === $this->currentUser || $share->getSharedBy() === $this->currentUser) {
return true;
}
// If the share is shared with you (or a group you are a member of)
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER && $share->getSharedWith() === $this->currentUser) {
return true;
}
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP && $share->getSharedWith()->inGroup($this->currentUser)) {
return true;
}
return false;
}
/**
* Convert an IShare to an array for OCS output
*
* @param IShare $share
* @return array
*/
protected function formatShare($share)
{
$result = ['id' => $share->getId(), 'share_type' => $share->getShareType(), 'uid_owner' => $share->getSharedBy()->getUID(), 'displayname_owner' => $share->getSharedBy()->getDisplayName(), 'permissions' => $share->getPermissions(), 'stime' => $share->getShareTime(), 'parent' => $share->getParent(), 'expiration' => null, 'token' => null];
$path = $share->getPath();
$result['path'] = $this->userFolder->getRelativePath($path->getPath());
if ($path instanceof \OCP\Files\Folder) {
$result['item_type'] = 'folder';
} else {
$result['item_type'] = 'file';
}
$result['storage_id'] = $path->getStorage()->getId();
$result['storage'] = \OC\Files\Cache\Storage::getNumericStorageId($path->getStorage()->getId());
$result['item_source'] = $path->getId();
$result['file_source'] = $path->getId();
$result['file_parent'] = $path->getParent()->getId();
$result['file_target'] = $share->getTarget();
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
$sharedWith = $share->getSharedWith();
$result['share_with'] = $sharedWith->getUID();
$result['share_with_displayname'] = $sharedWith->getDisplayName();
} else {
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$sharedWith = $share->getSharedWith();
$result['share_with'] = $sharedWith->getGID();
$result['share_with_displayname'] = $sharedWith->getGID();
} else {
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
$result['share_with'] = $share->getPassword();
$result['share_with_displayname'] = $share->getPassword();
$result['token'] = $share->getToken();
$result['url'] = $this->urlGenerator->linkToRouteAbsolute('files_sharing.sharecontroller.showShare', ['token' => $share->getToken()]);
$expiration = $share->getExpirationDate();
if ($expiration !== null) {
$result['expiration'] = $expiration->format('Y-m-d 00:00:00');
}
} else {
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_REMOTE) {
$result['share_with'] = $share->getSharedWith();
$result['share_with_displayname'] = $share->getSharedWith();
$result['token'] = $share->getToken();
}
}
}
}
$result['mail_send'] = $share->getMailSend() ? 1 : 0;
return $result;
}
/**
* Get all children of this share
*
* @param IShare $parent
* @return IShare[]
*/
public function getChildren(IShare $parent)
{
$children = [];
$qb = $this->dbConn->getQueryBuilder();
$qb->select('*')->from('share')->where($qb->expr()->eq('parent', $qb->createNamedParameter($parent->getId())))->andWhere($qb->expr()->in('share_type', [$qb->expr()->literal(\OCP\Share::SHARE_TYPE_USER), $qb->expr()->literal(\OCP\Share::SHARE_TYPE_GROUP), $qb->expr()->literal(\OCP\Share::SHARE_TYPE_LINK), $qb->expr()->literal(self::SHARE_TYPE_USERGROUP)]))->orderBy('id');
$cursor = $qb->execute();
while ($data = $cursor->fetch()) {
$children[] = $this->createShare($data);
}
$cursor->closeCursor();
return $children;
}
/**
* Delete a share
*
* @param Share $share
* @throws ShareNotFound
* @throws \OC\Share20\Exception\BackendError
*/
public function deleteShare(IShare $share)
{
if ($share->getId() === null) {
throw new ShareNotFound();
}
$this->defaultProvider->delete($share);
}
/**
* Check if the user that is sharing can actually share
*
* @param IShare $share
* @return bool
*/
protected function canShare(IShare $share)
{
if (!$this->shareApiEnabled()) {
return false;
}
if ($this->isSharingDisabledForUser($share->getSharedBy())) {
return false;
}
return true;
}
/**
* Unshare a share from the recipient. If this is a group share
* this means we need a special entry in the share db.
*
* @param IShare $share
* @param IUser $recipient
* @throws BackendError
* @throws ProviderException
*/
public function deleteFromSelf(IShare $share, IUser $recipient)
{
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
/** @var IGroup $group */
$group = $share->getSharedWith();
if (!$group->inGroup($recipient)) {
throw new ProviderException('Recipient not in receiving group');
}
// Try to fetch user specific share
$qb = $this->dbConn->getQueryBuilder();
$stmt = $qb->select('*')->from('share')->where($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_USERGROUP)))->andWhere($qb->expr()->eq('share_with', $qb->createNamedParameter($recipient->getUID())))->andWhere($qb->expr()->eq('parent', $qb->createNamedParameter($share->getId())))->execute();
$data = $stmt->fetch();
/*
* Check if there already is a user specific group share.
* If there is update it (if required).
*/
if ($data === false) {
$qb = $this->dbConn->getQueryBuilder();
$type = $share->getPath() instanceof \OCP\Files\File ? 'file' : 'folder';
//Insert new share
$qb->insert('share')->values(['share_type' => $qb->createNamedParameter(self::SHARE_TYPE_USERGROUP), 'share_with' => $qb->createNamedParameter($recipient->getUID()), 'uid_owner' => $qb->createNamedParameter($share->getShareOwner()->getUID()), 'uid_initiator' => $qb->createNamedParameter($share->getSharedBy()->getUID()), 'parent' => $qb->createNamedParameter($share->getId()), 'item_type' => $qb->createNamedParameter($type), 'item_source' => $qb->createNamedParameter($share->getPath()->getId()), 'file_source' => $qb->createNamedParameter($share->getPath()->getId()), 'file_target' => $qb->createNamedParameter($share->getTarget()), 'permissions' => $qb->createNamedParameter(0), 'stime' => $qb->createNamedParameter($share->getSharetime())])->execute();
} else {
if ($data['permissions'] !== 0) {
// Update existing usergroup share
$qb = $this->dbConn->getQueryBuilder();
$qb->update('share')->set('permissions', $qb->createNamedParameter(0))->where($qb->expr()->eq('id', $qb->createNamedParameter($data['id'])))->execute();
}
}
} else {
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
if ($share->getSharedWith() !== $recipient) {
throw new ProviderException('Recipient does not match');
}
// We can just delete user and link shares
$this->delete($share);
} else {
throw new ProviderException('Invalid shareType');
}
}
}
/**
* Delete all the children of this share
*
* @param IShare $share
* @return IShare[] List of deleted shares
*/
protected function deleteChildren(IShare $share)
{
$deletedShares = [];
$provider = $this->factory->getProviderForType($share->getShareType());
foreach ($provider->getChildren($share) as $child) {
$deletedChildren = $this->deleteChildren($child);
$deletedShares = array_merge($deletedShares, $deletedChildren);
$provider->delete($child);
$deletedShares[] = $child;
}
return $deletedShares;
}
