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server/lib/private/Share20/DefaultShareProvider.php
Roeland Jago Douma fc4d0a86ef
Fix merging backend results 
* Merge share types correctly
* Filter share types
* Order share types

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
2016-11-01 12:16:05 +01:00

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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Björn Schießle <bjoern@schiessle.org>
* @author Joas Schilling <coding@schilljs.com>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Share20;
use OCP\Files\File;
use OCP\Files\Folder;
use OCP\Share\IShareProvider;
use OC\Share20\Exception\InvalidShare;
use OC\Share20\Exception\ProviderException;
use OCP\Share\Exceptions\ShareNotFound;
use OC\Share20\Exception\BackendError;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IGroup;
use OCP\IGroupManager;
use OCP\IUserManager;
use OCP\Files\IRootFolder;
use OCP\IDBConnection;
use OCP\Files\Node;
/**
* Class DefaultShareProvider
*
* @package OC\Share20
*/
class DefaultShareProvider implements IShareProvider {
// Special share type for user modified group shares
const SHARE_TYPE_USERGROUP = 2;
/** @var IDBConnection */
private $dbConn;
/** @var IUserManager */
private $userManager;
/** @var IGroupManager */
private $groupManager;
/** @var IRootFolder */
private $rootFolder;
/**
* DefaultShareProvider constructor.
*
* @param IDBConnection $connection
* @param IUserManager $userManager
* @param IGroupManager $groupManager
* @param IRootFolder $rootFolder
*/
public function __construct(
IDBConnection $connection,
IUserManager $userManager,
IGroupManager $groupManager,
IRootFolder $rootFolder) {
$this->dbConn = $connection;
$this->userManager = $userManager;
$this->groupManager = $groupManager;
$this->rootFolder = $rootFolder;
}
/**
* Return the identifier of this provider.
*
* @return string Containing only [a-zA-Z0-9]
*/
public function identifier() {
return 'ocinternal';
}
/**
* Share a path
*
* @param \OCP\Share\IShare $share
* @return \OCP\Share\IShare The share object
* @throws ShareNotFound
* @throws \Exception
*/
public function create(\OCP\Share\IShare $share) {
$qb = $this->dbConn->getQueryBuilder();
$qb->insert('share');
$qb->setValue('share_type', $qb->createNamedParameter($share->getShareType()));
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
//Set the UID of the user we share with
$qb->setValue('share_with', $qb->createNamedParameter($share->getSharedWith()));
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
//Set the GID of the group we share with
$qb->setValue('share_with', $qb->createNamedParameter($share->getSharedWith()));
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
//Set the token of the share
$qb->setValue('token', $qb->createNamedParameter($share->getToken()));
//If a password is set store it
if ($share->getPassword() !== null) {
$qb->setValue('share_with', $qb->createNamedParameter($share->getPassword()));
}
//If an expiration date is set store it
if ($share->getExpirationDate() !== null) {
$qb->setValue('expiration', $qb->createNamedParameter($share->getExpirationDate(), 'datetime'));
}
if (method_exists($share, 'getParent')) {
$qb->setValue('parent', $qb->createNamedParameter($share->getParent()));
}
} else {
throw new \Exception('invalid share type!');
}
// Set what is shares
$qb->setValue('item_type', $qb->createParameter('itemType'));
if ($share->getNode() instanceof \OCP\Files\File) {
$qb->setParameter('itemType', 'file');
} else {
$qb->setParameter('itemType', 'folder');
}
// Set the file id
$qb->setValue('item_source', $qb->createNamedParameter($share->getNode()->getId()));
$qb->setValue('file_source', $qb->createNamedParameter($share->getNode()->getId()));
// set the permissions
$qb->setValue('permissions', $qb->createNamedParameter($share->getPermissions()));
// Set who created this share
$qb->setValue('uid_initiator', $qb->createNamedParameter($share->getSharedBy()));
// Set who is the owner of this file/folder (and this the owner of the share)
$qb->setValue('uid_owner', $qb->createNamedParameter($share->getShareOwner()));
// Set the file target
$qb->setValue('file_target', $qb->createNamedParameter($share->getTarget()));
// Set the time this share was created
$qb->setValue('stime', $qb->createNamedParameter(time()));
// insert the data and fetch the id of the share
$this->dbConn->beginTransaction();
$qb->execute();
$id = $this->dbConn->lastInsertId('*PREFIX*share');
$this->dbConn->commit();
// Now fetch the inserted share and create a complete share object
$qb = $this->dbConn->getQueryBuilder();
$qb->select('*')
->from('share')
->where($qb->expr()->eq('id', $qb->createNamedParameter($id)));
$cursor = $qb->execute();
$data = $cursor->fetch();
$cursor->closeCursor();
if ($data === false) {
throw new ShareNotFound();
}
$share = $this->createShare($data);
return $share;
}
/**
* Update a share
*
* @param \OCP\Share\IShare $share
* @return \OCP\Share\IShare The share object
*/
public function update(\OCP\Share\IShare $share) {
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
/*
* We allow updating the recipient on user shares.
*/
$qb = $this->dbConn->getQueryBuilder();
$qb->update('share')
->where($qb->expr()->eq('id', $qb->createNamedParameter($share->getId())))
->set('share_with', $qb->createNamedParameter($share->getSharedWith()))
->set('uid_owner', $qb->createNamedParameter($share->getShareOwner()))
->set('uid_initiator', $qb->createNamedParameter($share->getSharedBy()))
->set('permissions', $qb->createNamedParameter($share->getPermissions()))
->set('item_source', $qb->createNamedParameter($share->getNode()->getId()))
->set('file_source', $qb->createNamedParameter($share->getNode()->getId()))
->execute();
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$qb = $this->dbConn->getQueryBuilder();
$qb->update('share')
->where($qb->expr()->eq('id', $qb->createNamedParameter($share->getId())))
->set('uid_owner', $qb->createNamedParameter($share->getShareOwner()))
->set('uid_initiator', $qb->createNamedParameter($share->getSharedBy()))
->set('permissions', $qb->createNamedParameter($share->getPermissions()))
->set('item_source', $qb->createNamedParameter($share->getNode()->getId()))
->set('file_source', $qb->createNamedParameter($share->getNode()->getId()))
->execute();
/*
* Update all user defined group shares
*/
$qb = $this->dbConn->getQueryBuilder();
$qb->update('share')
->where($qb->expr()->eq('parent', $qb->createNamedParameter($share->getId())))
->set('uid_owner', $qb->createNamedParameter($share->getShareOwner()))
->set('uid_initiator', $qb->createNamedParameter($share->getSharedBy()))
->set('item_source', $qb->createNamedParameter($share->getNode()->getId()))
->set('file_source', $qb->createNamedParameter($share->getNode()->getId()))
->execute();
/*
* Now update the permissions for all children that have not set it to 0
*/
$qb = $this->dbConn->getQueryBuilder();
$qb->update('share')
->where($qb->expr()->eq('parent', $qb->createNamedParameter($share->getId())))
->andWhere($qb->expr()->neq('permissions', $qb->createNamedParameter(0)))
->set('permissions', $qb->createNamedParameter($share->getPermissions()))
->execute();
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
$qb = $this->dbConn->getQueryBuilder();
$qb->update('share')
->where($qb->expr()->eq('id', $qb->createNamedParameter($share->getId())))
->set('share_with', $qb->createNamedParameter($share->getPassword()))
->set('uid_owner', $qb->createNamedParameter($share->getShareOwner()))
->set('uid_initiator', $qb->createNamedParameter($share->getSharedBy()))
->set('permissions', $qb->createNamedParameter($share->getPermissions()))
->set('item_source', $qb->createNamedParameter($share->getNode()->getId()))
->set('file_source', $qb->createNamedParameter($share->getNode()->getId()))
->set('token', $qb->createNamedParameter($share->getToken()))
->set('expiration', $qb->createNamedParameter($share->getExpirationDate(), IQueryBuilder::PARAM_DATE))
->execute();
}
return $share;
}
/**
* Get all children of this share
* FIXME: remove once https://github.com/owncloud/core/pull/21660 is in
*
* @param \OCP\Share\IShare $parent
* @return \OCP\Share\IShare[]
*/
public function getChildren(\OCP\Share\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',
$qb->createNamedParameter([
\OCP\Share::SHARE_TYPE_USER,
\OCP\Share::SHARE_TYPE_GROUP,
\OCP\Share::SHARE_TYPE_LINK,
], IQueryBuilder::PARAM_INT_ARRAY)
)
)
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
))
->orderBy('id');
$cursor = $qb->execute();
while($data = $cursor->fetch()) {
$children[] = $this->createShare($data);
}
$cursor->closeCursor();
return $children;
}
/**
* Delete a share
*
* @param \OCP\Share\IShare $share
*/
public function delete(\OCP\Share\IShare $share) {
$qb = $this->dbConn->getQueryBuilder();
$qb->delete('share')
->where($qb->expr()->eq('id', $qb->createNamedParameter($share->getId())));
/*
* If the share is a group share delete all possible
* user defined groups shares.
*/
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$qb->orWhere($qb->expr()->eq('parent', $qb->createNamedParameter($share->getId())));
}
$qb->execute();
}
/**
* Unshare a share from the recipient. If this is a group share
* this means we need a special entry in the share db.
*
* @param \OCP\Share\IShare $share
* @param string $recipient UserId of recipient
* @throws BackendError
* @throws ProviderException
*/
public function deleteFromSelf(\OCP\Share\IShare $share, $recipient) {
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$group = $this->groupManager->get($share->getSharedWith());
$user = $this->userManager->get($recipient);
if (!$group->inGroup($user)) {
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)))
->andWhere($qb->expr()->eq('parent', $qb->createNamedParameter($share->getId())))
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
))
->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->getNode() 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),
'uid_owner' => $qb->createNamedParameter($share->getShareOwner()),
'uid_initiator' => $qb->createNamedParameter($share->getSharedBy()),
'parent' => $qb->createNamedParameter($share->getId()),
'item_type' => $qb->createNamedParameter($type),
'item_source' => $qb->createNamedParameter($share->getNode()->getId()),
'file_source' => $qb->createNamedParameter($share->getNode()->getId()),
'file_target' => $qb->createNamedParameter($share->getTarget()),
'permissions' => $qb->createNamedParameter(0),
'stime' => $qb->createNamedParameter($share->getShareTime()->getTimestamp()),
])->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');
}
}
/**
* @inheritdoc
*/
public function move(\OCP\Share\IShare $share, $recipient) {
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
// Just update the target
$qb = $this->dbConn->getQueryBuilder();
$qb->update('share')
->set('file_target', $qb->createNamedParameter($share->getTarget()))
->where($qb->expr()->eq('id', $qb->createNamedParameter($share->getId())))
->execute();
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
// Check if there is a usergroup share
$qb = $this->dbConn->getQueryBuilder();
$stmt = $qb->select('id')
->from('share')
->where($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_USERGROUP)))
->andWhere($qb->expr()->eq('share_with', $qb->createNamedParameter($recipient)))
->andWhere($qb->expr()->eq('parent', $qb->createNamedParameter($share->getId())))
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
))
->setMaxResults(1)
->execute();
$data = $stmt->fetch();
$stmt->closeCursor();
if ($data === false) {
// No usergroup share yet. Create one.
$qb = $this->dbConn->getQueryBuilder();
$qb->insert('share')
->values([
'share_type' => $qb->createNamedParameter(self::SHARE_TYPE_USERGROUP),
'share_with' => $qb->createNamedParameter($recipient),
'uid_owner' => $qb->createNamedParameter($share->getShareOwner()),
'uid_initiator' => $qb->createNamedParameter($share->getSharedBy()),
'parent' => $qb->createNamedParameter($share->getId()),
'item_type' => $qb->createNamedParameter($share->getNode() instanceof File ? 'file' : 'folder'),
'item_source' => $qb->createNamedParameter($share->getNode()->getId()),
'file_source' => $qb->createNamedParameter($share->getNode()->getId()),
'file_target' => $qb->createNamedParameter($share->getTarget()),
'permissions' => $qb->createNamedParameter($share->getPermissions()),
'stime' => $qb->createNamedParameter($share->getShareTime()->getTimestamp()),
])->execute();
} else {
// Already a usergroup share. Update it.
$qb = $this->dbConn->getQueryBuilder();
$qb->update('share')
->set('file_target', $qb->createNamedParameter($share->getTarget()))
->where($qb->expr()->eq('id', $qb->createNamedParameter($data['id'])))
->execute();
}
}
return $share;
}
public function getSharesInFolder($userId, Folder $node, $reshares) {
$qb = $this->dbConn->getQueryBuilder();
$qb->select('*')
->from('share', 's')
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
));
$qb->andWhere($qb->expr()->orX(
$qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_USER)),
$qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_GROUP)),
$qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_LINK))
));
/**
* Reshares for this user are shares where they are the owner.
*/
if ($reshares === false) {
$qb->andWhere($qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId)));
} else {
$qb->andWhere(
$qb->expr()->orX(
$qb->expr()->eq('uid_owner', $qb->createNamedParameter($userId)),
$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId))
)
);
}
$qb->innerJoin('s', 'filecache' ,'f', 's.file_source = f.fileid');
$qb->andWhere($qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId())));
$qb->orderBy('id');
$cursor = $qb->execute();
$shares = [];
while ($data = $cursor->fetch()) {
$shares[$data['fileid']][] = $this->createShare($data);
}
$cursor->closeCursor();
return $shares;
}
/**
* @inheritdoc
*/
public function getSharesBy($userId, $shareType, $node, $reshares, $limit, $offset) {
$qb = $this->dbConn->getQueryBuilder();
$qb->select('*')
->from('share')
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
));
$qb->andWhere($qb->expr()->eq('share_type', $qb->createNamedParameter($shareType)));
/**
* Reshares for this user are shares where they are the owner.
*/
if ($reshares === false) {
$qb->andWhere($qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId)));
} else {
$qb->andWhere(
$qb->expr()->orX(
$qb->expr()->eq('uid_owner', $qb->createNamedParameter($userId)),
$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId))
)
);
}
if ($node !== null) {
$qb->andWhere($qb->expr()->eq('file_source', $qb->createNamedParameter($node->getId())));
}
if ($limit !== -1) {
$qb->setMaxResults($limit);
}
$qb->setFirstResult($offset);
$qb->orderBy('id');
$cursor = $qb->execute();
$shares = [];
while($data = $cursor->fetch()) {
$shares[] = $this->createShare($data);
}
$cursor->closeCursor();
return $shares;
}
/**
* @inheritdoc
*/
public function getShareById($id, $recipientId = null) {
$qb = $this->dbConn->getQueryBuilder();
$qb->select('*')
->from('share')
->where($qb->expr()->eq('id', $qb->createNamedParameter($id)))
->andWhere(
$qb->expr()->in(
'share_type',
$qb->createNamedParameter([
\OCP\Share::SHARE_TYPE_USER,
\OCP\Share::SHARE_TYPE_GROUP,
\OCP\Share::SHARE_TYPE_LINK,
], IQueryBuilder::PARAM_INT_ARRAY)
)
)
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
));
$cursor = $qb->execute();
$data = $cursor->fetch();
$cursor->closeCursor();
if ($data === false) {
throw new ShareNotFound();
}
try {
$share = $this->createShare($data);
} catch (InvalidShare $e) {
throw new ShareNotFound();
}
// If the recipient is set for a group share resolve to that user
if ($recipientId !== null && $share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$share = $this->resolveGroupShares([$share], $recipientId)[0];
}
return $share;
}
/**
* Get shares for a given path
*
* @param \OCP\Files\Node $path
* @return \OCP\Share\IShare[]
*/
public function getSharesByPath(Node $path) {
$qb = $this->dbConn->getQueryBuilder();
$cursor = $qb->select('*')
->from('share')
->andWhere($qb->expr()->eq('file_source', $qb->createNamedParameter($path->getId())))
->andWhere(
$qb->expr()->orX(
$qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_USER)),
$qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_GROUP))
)
)
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
))
->execute();
$shares = [];
while($data = $cursor->fetch()) {
$shares[] = $this->createShare($data);
}
$cursor->closeCursor();
return $shares;
}
/**
* Returns whether the given database result can be interpreted as
* a share with accessible file (not trashed, not deleted)
*/
private function isAccessibleResult($data) {
// exclude shares leading to deleted file entries
if ($data['fileid'] === null) {
return false;
}
// exclude shares leading to trashbin on home storages
$pathSections = explode('/', $data['path'], 2);
// FIXME: would not detect rare md5'd home storage case properly
if ($pathSections[0] !== 'files' && explode(':', $data['storage_string_id'], 2)[0] === 'home') {
return false;
}
return true;
}
/**
* @inheritdoc
*/
public function getSharedWith($userId, $shareType, $node, $limit, $offset) {
/** @var Share[] $shares */
$shares = [];
if ($shareType === \OCP\Share::SHARE_TYPE_USER) {
//Get shares directly with this user
$qb = $this->dbConn->getQueryBuilder();
$qb->select('s.*', 'f.fileid', 'f.path')
->selectAlias('st.id', 'storage_string_id')
->from('share', 's')
->leftJoin('s', 'filecache', 'f', $qb->expr()->eq('s.file_source', 'f.fileid'))
->leftJoin('f', 'storages', 'st', $qb->expr()->eq('f.storage', 'st.numeric_id'));
// Order by id
$qb->orderBy('s.id');
// Set limit and offset
if ($limit !== -1) {
$qb->setMaxResults($limit);
}
$qb->setFirstResult($offset);
$qb->where($qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_USER)))
->andWhere($qb->expr()->eq('share_with', $qb->createNamedParameter($userId)))
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
));
// Filter by node if provided
if ($node !== null) {
$qb->andWhere($qb->expr()->eq('file_source', $qb->createNamedParameter($node->getId())));
}
$cursor = $qb->execute();
while($data = $cursor->fetch()) {
if ($this->isAccessibleResult($data)) {
$shares[] = $this->createShare($data);
}
}
$cursor->closeCursor();
} else if ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
$user = $this->userManager->get($userId);
$allGroups = $this->groupManager->getUserGroups($user);
/** @var Share[] $shares2 */
$shares2 = [];
$start = 0;
while(true) {
$groups = array_slice($allGroups, $start, 100);
$start += 100;
if ($groups === []) {
break;
}
$qb = $this->dbConn->getQueryBuilder();
$qb->select('s.*', 'f.fileid', 'f.path')
->selectAlias('st.id', 'storage_string_id')
->from('share', 's')
->leftJoin('s', 'filecache', 'f', $qb->expr()->eq('s.file_source', 'f.fileid'))
->leftJoin('f', 'storages', 'st', $qb->expr()->eq('f.storage', 'st.numeric_id'))
->orderBy('s.id')
->setFirstResult(0);
if ($limit !== -1) {
$qb->setMaxResults($limit - count($shares));
}
// Filter by node if provided
if ($node !== null) {
$qb->andWhere($qb->expr()->eq('file_source', $qb->createNamedParameter($node->getId())));
}
$groups = array_map(function(IGroup $group) { return $group->getGID(); }, $groups);
$qb->andWhere($qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_GROUP)))
->andWhere($qb->expr()->in('share_with', $qb->createNamedParameter(
$groups,
IQueryBuilder::PARAM_STR_ARRAY
)))
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
));
$cursor = $qb->execute();
while($data = $cursor->fetch()) {
if ($offset > 0) {
$offset--;
continue;
}
if ($this->isAccessibleResult($data)) {
$shares2[] = $this->createShare($data);
}
}
$cursor->closeCursor();
}
/*
* Resolve all group shares to user specific shares
*/
$shares = $this->resolveGroupShares($shares2, $userId);
} else {
throw new BackendError('Invalid backend');
}
return $shares;
}
/**
* Get a share by token
*
* @param string $token
* @return \OCP\Share\IShare
* @throws ShareNotFound
*/
public function getShareByToken($token) {
$qb = $this->dbConn->getQueryBuilder();
$cursor = $qb->select('*')
->from('share')
->where($qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_LINK)))
->andWhere($qb->expr()->eq('token', $qb->createNamedParameter($token)))
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
))
->execute();
$data = $cursor->fetch();
if ($data === false) {
throw new ShareNotFound();
}
try {
$share = $this->createShare($data);
} catch (InvalidShare $e) {
throw new ShareNotFound();
}
return $share;
}
/**
* Create a share object from an database row
*
* @param mixed[] $data
* @return \OCP\Share\IShare
* @throws InvalidShare
*/
private function createShare($data) {
$share = new Share($this->rootFolder, $this->userManager);
$share->setId((int)$data['id'])
->setShareType((int)$data['share_type'])
->setPermissions((int)$data['permissions'])
->setTarget($data['file_target'])
->setMailSend((bool)$data['mail_send']);
$shareTime = new \DateTime();
$shareTime->setTimestamp((int)$data['stime']);
$share->setShareTime($shareTime);
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
$share->setSharedWith($data['share_with']);
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$share->setSharedWith($data['share_with']);
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
$share->setPassword($data['share_with']);
$share->setToken($data['token']);
}
$share->setSharedBy($data['uid_initiator']);
$share->setShareOwner($data['uid_owner']);
$share->setNodeId((int)$data['file_source']);
$share->setNodeType($data['item_type']);
if ($data['expiration'] !== null) {
$expiration = \DateTime::createFromFormat('Y-m-d H:i:s', $data['expiration']);
$share->setExpirationDate($expiration);
}
$share->setProviderId($this->identifier());
return $share;
}
/**
* @param Share[] $shares
* @param $userId
* @return Share[] The updates shares if no update is found for a share return the original
*/
private function resolveGroupShares($shares, $userId) {
$result = [];
$start = 0;
while(true) {
/** @var Share[] $shareSlice */
$shareSlice = array_slice($shares, $start, 100);
$start += 100;
if ($shareSlice === []) {
break;
}
/** @var int[] $ids */
$ids = [];
/** @var Share[] $shareMap */
$shareMap = [];
foreach ($shareSlice as $share) {
$ids[] = (int)$share->getId();
$shareMap[$share->getId()] = $share;
}
$qb = $this->dbConn->getQueryBuilder();
$query = $qb->select('*')
->from('share')
->where($qb->expr()->in('parent', $qb->createNamedParameter($ids, IQueryBuilder::PARAM_INT_ARRAY)))
->andWhere($qb->expr()->eq('share_with', $qb->createNamedParameter($userId)))
->andWhere($qb->expr()->orX(
$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
));
$stmt = $query->execute();
while($data = $stmt->fetch()) {
$shareMap[$data['parent']]->setPermissions((int)$data['permissions']);
$shareMap[$data['parent']]->setTarget($data['file_target']);
}
$stmt->closeCursor();
foreach ($shareMap as $share) {
$result[] = $share;
}
}
return $result;
}
/**
* A user is deleted from the system
* So clean up the relevant shares.
*
* @param string $uid
* @param int $shareType
*/
public function userDeleted($uid, $shareType) {
$qb = $this->dbConn->getQueryBuilder();
$qb->delete('share');
if ($shareType === \OCP\Share::SHARE_TYPE_USER) {
/*
* Delete all user shares that are owned by this user
* or that are received by this user
*/
$qb->where($qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_USER)));
$qb->andWhere(
$qb->expr()->orX(
$qb->expr()->eq('uid_owner', $qb->createNamedParameter($uid)),
$qb->expr()->eq('share_with', $qb->createNamedParameter($uid))
)
);
} else if ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
/*
* Delete all group shares that are owned by this user
* Or special user group shares that are received by this user
*/
$qb->where(
$qb->expr()->andX(
$qb->expr()->orX(
$qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_GROUP)),
$qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_USERGROUP))
),
$qb->expr()->eq('uid_owner', $qb->createNamedParameter($uid))
)
);
$qb->orWhere(
$qb->expr()->andX(
$qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_USERGROUP)),
$qb->expr()->eq('share_with', $qb->createNamedParameter($uid))
)
);
} else if ($shareType === \OCP\Share::SHARE_TYPE_LINK) {
/*
* Delete all link shares owned by this user.
* And all link shares initiated by this user (until #22327 is in)
*/
$qb->where($qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_LINK)));
$qb->andWhere(
$qb->expr()->orX(
$qb->expr()->eq('uid_owner', $qb->createNamedParameter($uid)),
$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($uid))
)
);
}
$qb->execute();
}
/**
* Delete all shares received by this group. As well as any custom group
* shares for group members.
*
* @param string $gid
*/
public function groupDeleted($gid) {
/*
* First delete all custom group shares for group members
*/
$qb = $this->dbConn->getQueryBuilder();
$qb->select('id')
->from('share')
->where($qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_GROUP)))
->andWhere($qb->expr()->eq('share_with', $qb->createNamedParameter($gid)));
$cursor = $qb->execute();
$ids = [];
while($row = $cursor->fetch()) {
$ids[] = (int)$row['id'];
}
$cursor->closeCursor();
if (!empty($ids)) {
$chunks = array_chunk($ids, 100);
foreach ($chunks as $chunk) {
$qb->delete('share')
->where($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_USERGROUP)))
->andWhere($qb->expr()->in('parent', $qb->createNamedParameter($chunk, IQueryBuilder::PARAM_INT_ARRAY)));
$qb->execute();
}
}
/*
* Now delete all the group shares
*/
$qb = $this->dbConn->getQueryBuilder();
$qb->delete('share')
->where($qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_GROUP)))
->andWhere($qb->expr()->eq('share_with', $qb->createNamedParameter($gid)));
$qb->execute();
}
/**
* Delete custom group shares to this group for this user
*
* @param string $uid
* @param string $gid
*/
public function userDeletedFromGroup($uid, $gid) {
/*
* Get all group shares
*/
$qb = $this->dbConn->getQueryBuilder();
$qb->select('id')
->from('share')
->where($qb->expr()->eq('share_type', $qb->createNamedParameter(\OCP\Share::SHARE_TYPE_GROUP)))
->andWhere($qb->expr()->eq('share_with', $qb->createNamedParameter($gid)));
$cursor = $qb->execute();
$ids = [];
while($row = $cursor->fetch()) {
$ids[] = (int)$row['id'];
}
$cursor->closeCursor();
if (!empty($ids)) {
$chunks = array_chunk($ids, 100);
foreach ($chunks as $chunk) {
/*
* Delete all special shares wit this users for the found group shares
*/
$qb->delete('share')
->where($qb->expr()->eq('share_type', $qb->createNamedParameter(self::SHARE_TYPE_USERGROUP)))
->andWhere($qb->expr()->eq('share_with', $qb->createNamedParameter($uid)))
->andWhere($qb->expr()->in('parent', $qb->createNamedParameter($chunk, IQueryBuilder::PARAM_INT_ARRAY)));
$qb->execute();
}
}
}
}
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