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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Bjoern Schiessle <bjoern@schiessle.org>
* @author Joas Schilling <coding@schilljs.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Maxence Lange <maxence@nextcloud.com>
* @author Michael Jobst <mjobst+github@tecratech.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @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 OCA\Files_Sharing\Controller;
use OCA\Files\Helper;
use OCP\AppFramework\Http\DataResponse;
use OCP\AppFramework\OCS\OCSBadRequestException;
use OCP\AppFramework\OCS\OCSException;
use OCP\AppFramework\OCS\OCSForbiddenException;
use OCP\AppFramework\OCS\OCSNotFoundException;
use OCP\AppFramework\OCSController;
use OCP\Files\Node;
use OCP\Files\NotFoundException;
use OCP\IGroupManager;
use OCP\IL10N;
use OCP\IUserManager;
use OCP\IRequest;
use OCP\IURLGenerator;
use OCP\Files\IRootFolder;
use OCP\Lock\LockedException;
use OCP\Share\IManager;
use OCP\Share\Exceptions\ShareNotFound;
use OCP\Share\Exceptions\GenericShareException;
use OCP\Lock\ILockingProvider;
use OCP\Share\IShare;
/**
* Class Share20OCS
*
* @package OCA\Files_Sharing\API
*/
class ShareAPIController extends OCSController {
/** @var IManager */
private $shareManager;
/** @var IGroupManager */
private $groupManager;
/** @var IUserManager */
private $userManager;
/** @var IRequest */
protected $request;
/** @var IRootFolder */
private $rootFolder;
/** @var IURLGenerator */
private $urlGenerator;
/** @var string */
private $currentUser;
/** @var IL10N */
private $l;
/** @var \OCP\Files\Node */
private $lockedNode;
/**
* Share20OCS constructor.
*
* @param string $appName
* @param IRequest $request
* @param IManager $shareManager
* @param IGroupManager $groupManager
* @param IUserManager $userManager
* @param IRootFolder $rootFolder
* @param IURLGenerator $urlGenerator
* @param string $userId
* @param IL10N $l10n
*/
public function __construct(
$appName,
IRequest $request,
IManager $shareManager,
IGroupManager $groupManager,
IUserManager $userManager,
IRootFolder $rootFolder,
IURLGenerator $urlGenerator,
$userId,
IL10N $l10n
) {
parent::__construct($appName, $request);
$this->shareManager = $shareManager;
$this->userManager = $userManager;
$this->groupManager = $groupManager;
$this->request = $request;
$this->rootFolder = $rootFolder;
$this->urlGenerator = $urlGenerator;
$this->currentUser = $userId;
$this->l = $l10n;
}
/**
* Convert an IShare to an array for OCS output
*
* @param \OCP\Share\IShare $share
* @param Node|null $recipientNode
* @return array
* @throws NotFoundException In case the node can't be resolved.
*/
protected function formatShare(\OCP\Share\IShare $share, Node $recipientNode = null) {
$sharedBy = $this->userManager->get($share->getSharedBy());
$shareOwner = $this->userManager->get($share->getShareOwner());
$result = [
'id' => $share->getId(),
'share_type' => $share->getShareType(),
'uid_owner' => $share->getSharedBy(),
'displayname_owner' => $sharedBy !== null ? $sharedBy->getDisplayName() : $share->getSharedBy(),
'permissions' => $share->getPermissions(),
'stime' => $share->getShareTime()->getTimestamp(),
'parent' => null,
'expiration' => null,
'token' => null,
'uid_file_owner' => $share->getShareOwner(),
'displayname_file_owner' => $shareOwner !== null ? $shareOwner->getDisplayName() : $share->getShareOwner(),
];
$userFolder = $this->rootFolder->getUserFolder($this->currentUser);
if ($recipientNode) {
$node = $recipientNode;
} else {
$nodes = $userFolder->getById($share->getNodeId());
if (empty($nodes)) {
// fallback to guessing the path
$node = $userFolder->get($share->getTarget());
if ($node === null || $share->getTarget() === '') {
throw new NotFoundException();
}
} else {
$node = $nodes[0];
}
}
$result['path'] = $userFolder->getRelativePath($node->getPath());
if ($node instanceOf \OCP\Files\Folder) {
$result['item_type'] = 'folder';
} else {
$result['item_type'] = 'file';
}
$result['mimetype'] = $node->getMimetype();
$result['storage_id'] = $node->getStorage()->getId();
$result['storage'] = $node->getStorage()->getCache()->getNumericStorageId();
$result['item_source'] = $node->getId();
$result['file_source'] = $node->getId();
$result['file_parent'] = $node->getParent()->getId();
$result['file_target'] = $share->getTarget();
$expiration = $share->getExpirationDate();
if ($expiration !== null) {
$result['expiration'] = $expiration->format('Y-m-d 00:00:00');
}
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_USER) {
$sharedWith = $this->userManager->get($share->getSharedWith());
$result['share_with'] = $share->getSharedWith();
$result['share_with_displayname'] = $sharedWith !== null ? $sharedWith->getDisplayName() : $share->getSharedWith();
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$group = $this->groupManager->get($share->getSharedWith());
$result['share_with'] = $share->getSharedWith();
$result['share_with_displayname'] = $group !== null ? $group->getDisplayName() : $share->getSharedWith();
} else if ($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' => $share->getToken()]);
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_REMOTE) {
$result['share_with'] = $share->getSharedWith();
$result['share_with_displayname'] = $this->getDisplayNameFromAddressBook($share->getSharedWith(), 'CLOUD');
$result['token'] = $share->getToken();
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_EMAIL) {
$result['share_with'] = $share->getSharedWith();
$result['password'] = $share->getPassword();
$result['share_with_displayname'] = $this->getDisplayNameFromAddressBook($share->getSharedWith(), 'EMAIL');
$result['token'] = $share->getToken();
} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_CIRCLE) {
// getSharedWith() returns either "name (type, owner)" or
// "name (type, owner) [id]", depending on the Circles app version.
$hasCircleId = (substr($share->getSharedWith(), -1) === ']');
$displayNameLength = ($hasCircleId? strrpos($share->getSharedWith(), ' '): strlen($share->getSharedWith()));
$result['share_with_displayname'] = substr($share->getSharedWith(), 0, $displayNameLength);
$shareWithStart = ($hasCircleId? strrpos($share->getSharedWith(), '[') + 1: 0);
$shareWithLength = ($hasCircleId? -1: strpos($share->getSharedWith(), ' '));
$result['share_with'] = substr($share->getSharedWith(), $shareWithStart, $shareWithLength);
}
$result['mail_send'] = $share->getMailSend() ? 1 : 0;
return $result;
}
/**
* Check if one of the users address books knows the exact property, if
* yes we return the full name.
*
* @param string $query
* @param string $property
* @return string
*/
private function getDisplayNameFromAddressBook($query, $property) {
// FIXME: If we inject the contacts manager it gets initialized bofore any address books are registered
$result = \OC::$server->getContactsManager()->search($query, [$property]);
foreach ($result as $r) {
foreach($r[$property] as $value) {
if ($value === $query) {
return $r['FN'];
}
}
}
return $query;
}
/**
* Get a specific share by id
*
* @NoAdminRequired
*
* @param string $id
* @return DataResponse
* @throws OCSNotFoundException
*/
public function getShare($id) {
try {
$share = $this->getShareById($id);
} catch (ShareNotFound $e) {
throw new OCSNotFoundException($this->l->t('Wrong share ID, share doesn\'t exist'));
}
if ($this->canAccessShare($share)) {
try {
$share = $this->formatShare($share);
return new DataResponse([$share]);
} catch (NotFoundException $e) {
//Fall trough
}
}
throw new OCSNotFoundException($this->l->t('Wrong share ID, share doesn\'t exist'));
}
/**
* Delete a share
*
* @NoAdminRequired
*
* @param string $id
* @return DataResponse
* @throws OCSNotFoundException
*/
public function deleteShare($id) {
try {
$share = $this->getShareById($id);
} catch (ShareNotFound $e) {
throw new OCSNotFoundException($this->l->t('Wrong share ID, share doesn\'t exist'));
}
try {
$this->lock($share->getNode());
} catch (LockedException $e) {
throw new OCSNotFoundException($this->l->t('could not delete share'));
}
if (!$this->canAccessShare($share)) {
throw new OCSNotFoundException($this->l->t('Could not delete share'));
}
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP &&
$share->getShareOwner() !== $this->currentUser &&
$share->getSharedBy() !== $this->currentUser) {
$this->shareManager->deleteFromSelf($share, $this->currentUser);
} else {
$this->shareManager->deleteShare($share);
}
return new DataResponse();
}
/**
* @NoAdminRequired
*
* @param string $path
* @param int $permissions
* @param int $shareType
* @param string $shareWith
* @param string $publicUpload
* @param string $password
* @param string $expireDate
*
* @return DataResponse
* @throws OCSNotFoundException
* @throws OCSForbiddenException
* @throws OCSBadRequestException
* @throws OCSException
*
* @suppress PhanUndeclaredClassMethod
*/
public function createShare(
$path = null,
$permissions = \OCP\Constants::PERMISSION_ALL,
$shareType = -1,
$shareWith = null,
$publicUpload = 'false',
$password = '',
$expireDate = ''
) {
$share = $this->shareManager->newShare();
// Verify path
if ($path === null) {
throw new OCSNotFoundException($this->l->t('Please specify a file or folder path'));
}
$userFolder = $this->rootFolder->getUserFolder($this->currentUser);
try {
$path = $userFolder->get($path);
} catch (NotFoundException $e) {
throw new OCSNotFoundException($this->l->t('Wrong path, file/folder doesn\'t exist'));
}
$share->setNode($path);
try {
$this->lock($share->getNode());
} catch (LockedException $e) {
throw new OCSNotFoundException($this->l->t('Could not create share'));
}
if ($permissions < 0 || $permissions > \OCP\Constants::PERMISSION_ALL) {
throw new OCSNotFoundException($this->l->t('invalid permissions'));
}
// Shares always require read permissions
$permissions |= \OCP\Constants::PERMISSION_READ;
if ($path instanceof \OCP\Files\File) {
// Single file shares should never have delete or create permissions
$permissions &= ~\OCP\Constants::PERMISSION_DELETE;
$permissions &= ~\OCP\Constants::PERMISSION_CREATE;
}
/*
* Hack for https://github.com/owncloud/core/issues/22587
* We check the permissions via webdav. But the permissions of the mount point
* do not equal the share permissions. Here we fix that for federated mounts.
*/
if ($path->getStorage()->instanceOfStorage('OCA\Files_Sharing\External\Storage')) {
$permissions &= ~($permissions & ~$path->getPermissions());
}
if ($shareType === \OCP\Share::SHARE_TYPE_USER) {
// Valid user is required to share
if ($shareWith === null || !$this->userManager->userExists($shareWith)) {
throw new OCSNotFoundException($this->l->t('Please specify a valid user'));
}
$share->setSharedWith($shareWith);
$share->setPermissions($permissions);
} else if ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
if (!$this->shareManager->allowGroupSharing()) {
throw new OCSNotFoundException($this->l->t('Group sharing is disabled by the administrator'));
}
// Valid group is required to share
if ($shareWith === null || !$this->groupManager->groupExists($shareWith)) {
throw new OCSNotFoundException($this->l->t('Please specify a valid group'));
}
$share->setSharedWith($shareWith);
$share->setPermissions($permissions);
} else if ($shareType === \OCP\Share::SHARE_TYPE_LINK) {
//Can we even share links?
if (!$this->shareManager->shareApiAllowLinks()) {
throw new OCSNotFoundException($this->l->t('Public link sharing is disabled by the administrator'));
}
/*
* For now we only allow 1 link share.
* Return the existing link share if this is a duplicate
*/
$existingShares = $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_LINK, $path, false, 1, 0);
if (!empty($existingShares)) {
return new DataResponse($this->formatShare($existingShares[0]));
}
if ($publicUpload === 'true') {
// Check if public upload is allowed
if (!$this->shareManager->shareApiLinkAllowPublicUpload()) {
throw new OCSForbiddenException($this->l->t('Public upload disabled by the administrator'));
}
// Public upload can only be set for folders
if ($path instanceof \OCP\Files\File) {
throw new OCSNotFoundException($this->l->t('Public upload is only possible for publicly shared folders'));
}
$share->setPermissions(
\OCP\Constants::PERMISSION_READ |
\OCP\Constants::PERMISSION_CREATE |
\OCP\Constants::PERMISSION_UPDATE |
\OCP\Constants::PERMISSION_DELETE
);
} else {
$share->setPermissions(\OCP\Constants::PERMISSION_READ);
}
// Set password
if ($password !== '') {
$share->setPassword($password);
}
//Expire date
if ($expireDate !== '') {
try {
$expireDate = $this->parseDate($expireDate);
$share->setExpirationDate($expireDate);
} catch (\Exception $e) {
throw new OCSNotFoundException($this->l->t('Invalid date, date format must be YYYY-MM-DD'));
}
}
} else if ($shareType === \OCP\Share::SHARE_TYPE_REMOTE) {
if (!$this->shareManager->outgoingServer2ServerSharesAllowed()) {
throw new OCSForbiddenException($this->l->t('Sharing %s failed because the back end does not allow shares from type %s', [$path->getPath(), $shareType]));
}
$share->setSharedWith($shareWith);
$share->setPermissions($permissions);
} else if ($shareType === \OCP\Share::SHARE_TYPE_EMAIL) {
if ($share->getNodeType() === 'file') {
$share->setPermissions(\OCP\Constants::PERMISSION_READ);
} else {
$share->setPermissions(
\OCP\Constants::PERMISSION_READ |
\OCP\Constants::PERMISSION_CREATE |
\OCP\Constants::PERMISSION_UPDATE |
\OCP\Constants::PERMISSION_DELETE);
}
$share->setSharedWith($shareWith);
} else if ($shareType === \OCP\Share::SHARE_TYPE_CIRCLE) {
if (!\OC::$server->getAppManager()->isEnabledForUser('circles') || !class_exists('\OCA\Circles\ShareByCircleProvider')) {
throw new OCSNotFoundException($this->l->t('You cannot share to a Circle if the app is not enabled'));
}
$circle = \OCA\Circles\Api\v1\Circles::detailsCircle($shareWith);
// Valid circle is required to share
if ($circle === null) {
throw new OCSNotFoundException($this->l->t('Please specify a valid circle'));
}
$share->setSharedWith($shareWith);
$share->setPermissions($permissions);
} else {
throw new OCSBadRequestException($this->l->t('Unknown share type'));
}
$share->setShareType($shareType);
$share->setSharedBy($this->currentUser);
try {
$share = $this->shareManager->createShare($share);
} catch (GenericShareException $e) {
$code = $e->getCode() === 0 ? 403 : $e->getCode();
throw new OCSException($e->getHint(), $code);
} catch (\Exception $e) {
throw new OCSForbiddenException($e->getMessage());
}
$output = $this->formatShare($share);
return new DataResponse($output);
}
/**
* @param \OCP\Files\File|\OCP\Files\Folder $node
* @param boolean $includeTags
* @return DataResponse
*/
private function getSharedWithMe($node = null, $includeTags) {
$userShares = $this->shareManager->getSharedWith($this->currentUser, \OCP\Share::SHARE_TYPE_USER, $node, -1, 0);
$groupShares = $this->shareManager->getSharedWith($this->currentUser, \OCP\Share::SHARE_TYPE_GROUP, $node, -1, 0);
$circleShares = $this->shareManager->getSharedWith($this->currentUser, \OCP\Share::SHARE_TYPE_CIRCLE, $node, -1, 0);
$shares = array_merge($userShares, $groupShares, $circleShares);
$shares = array_filter($shares, function (IShare $share) {
return $share->getShareOwner() !== $this->currentUser;
});
$formatted = [];
foreach ($shares as $share) {
if ($this->canAccessShare($share)) {
try {
$formatted[] = $this->formatShare($share);
} catch (NotFoundException $e) {
// Ignore this share
}
}
}
if ($includeTags) {
$formatted = Helper::populateTags($formatted, 'file_source', \OC::$server->getTagManager());
}
return new DataResponse($formatted);
}
/**
* @param \OCP\Files\Folder $folder
* @return DataResponse
* @throws OCSBadRequestException
*/
private function getSharesInDir($folder) {
if (!($folder instanceof \OCP\Files\Folder)) {
throw new OCSBadRequestException($this->l->t('Not a directory'));
}
$nodes = $folder->getDirectoryListing();
/** @var \OCP\Share\IShare[] $shares */
$shares = [];
foreach ($nodes as $node) {
$shares = array_merge($shares, $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_USER, $node, false, -1, 0));
$shares = array_merge($shares, $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_GROUP, $node, false, -1, 0));
$shares = array_merge($shares, $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_LINK, $node, false, -1, 0));
if($this->shareManager->shareProviderExists(\OCP\Share::SHARE_TYPE_EMAIL)) {
$shares = array_merge($shares, $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_EMAIL, $node, false, -1, 0));
}
if ($this->shareManager->outgoingServer2ServerSharesAllowed()) {
$shares = array_merge($shares, $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_REMOTE, $node, false, -1, 0));
}
}
$formatted = [];
foreach ($shares as $share) {
try {
$formatted[] = $this->formatShare($share);
} catch (NotFoundException $e) {
//Ignore this share
}
}
return new DataResponse($formatted);
}
/**
* The getShares function.
*
* @NoAdminRequired
*
* @param string $shared_with_me
* @param string $reshares
* @param string $subfiles
* @param string $path
*
* - Get shares by the current user
* - Get shares by the current user and reshares (?reshares=true)
* - Get shares with the current user (?shared_with_me=true)
* - Get shares for a specific path (?path=...)
* - Get all shares in a folder (?subfiles=true&path=..)
*
* @return DataResponse
* @throws OCSNotFoundException
*/
public function getShares(
$shared_with_me = 'false',
$reshares = 'false',
$subfiles = 'false',
$path = null,
$include_tags = 'false'
) {
if ($path !== null) {
$userFolder = $this->rootFolder->getUserFolder($this->currentUser);
try {
$path = $userFolder->get($path);
$this->lock($path);
} catch (\OCP\Files\NotFoundException $e) {
throw new OCSNotFoundException($this->l->t('Wrong path, file/folder doesn\'t exist'));
} catch (LockedException $e) {
throw new OCSNotFoundException($this->l->t('Could not lock path'));
}
}
if ($shared_with_me === 'true') {
$result = $this->getSharedWithMe($path, $include_tags);
return $result;
}
if ($subfiles === 'true') {
$result = $this->getSharesInDir($path);
return $result;
}
if ($reshares === 'true') {
$reshares = true;
} else {
$reshares = false;
}
// Get all shares
$userShares = $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_USER, $path, $reshares, -1, 0);
$groupShares = $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_GROUP, $path, $reshares, -1, 0);
$linkShares = $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_LINK, $path, $reshares, -1, 0);
if ($this->shareManager->shareProviderExists(\OCP\Share::SHARE_TYPE_EMAIL)) {
$mailShares = $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_EMAIL, $path, $reshares, -1, 0);
} else {
$mailShares = [];
}
if ($this->shareManager->shareProviderExists(\OCP\Share::SHARE_TYPE_CIRCLE)) {
$circleShares = $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_CIRCLE, $path, $reshares, -1, 0);
} else {
$circleShares = [];
}
$shares = array_merge($userShares, $groupShares, $linkShares, $mailShares, $circleShares);
if ($this->shareManager->outgoingServer2ServerSharesAllowed()) {
$federatedShares = $this->shareManager->getSharesBy($this->currentUser, \OCP\Share::SHARE_TYPE_REMOTE, $path, $reshares, -1, 0);
$shares = array_merge($shares, $federatedShares);
}
$formatted = [];
foreach ($shares as $share) {
try {
$formatted[] = $this->formatShare($share, $path);
} catch (NotFoundException $e) {
//Ignore share
}
}
if ($include_tags) {
$formatted = Helper::populateTags($formatted, 'file_source', \OC::$server->getTagManager());
}
return new DataResponse($formatted);
}
/**
* @NoAdminRequired
*
* @param int $id
* @param int $permissions
* @param string $password
* @param string $publicUpload
* @param string $expireDate
* @return DataResponse
* @throws OCSNotFoundException
* @throws OCSBadRequestException
* @throws OCSForbiddenException
*/
public function updateShare(
$id,
$permissions = null,
$password = null,
$publicUpload = null,
$expireDate = null
) {
try {
$share = $this->getShareById($id);
} catch (ShareNotFound $e) {
throw new OCSNotFoundException($this->l->t('Wrong share ID, share doesn\'t exist'));
}
$this->lock($share->getNode());
if (!$this->canAccessShare($share, false)) {
throw new OCSNotFoundException($this->l->t('Wrong share ID, share doesn\'t exist'));
}
if ($permissions === null && $password === null && $publicUpload === null && $expireDate === null) {
throw new OCSBadRequestException($this->l->t('Wrong or no update parameter given'));
}
/*
* expirationdate, password and publicUpload only make sense for link shares
*/
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
$newPermissions = null;
if ($publicUpload === 'true') {
$newPermissions = \OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE;
} else if ($publicUpload === 'false') {
$newPermissions = \OCP\Constants::PERMISSION_READ;
}
if ($permissions !== null) {
$newPermissions = (int)$permissions;
$newPermissions = $newPermissions & ~\OCP\Constants::PERMISSION_SHARE;
}
if ($newPermissions !== null &&
!in_array($newPermissions, [
\OCP\Constants::PERMISSION_READ,
\OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE, // legacy
\OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE, // correct
\OCP\Constants::PERMISSION_CREATE, // hidden file list
\OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_UPDATE, // allow to edit single files
])
) {
throw new OCSBadRequestException($this->l->t('Can\'t change permissions for public share links'));
}
if (
// legacy
$newPermissions === (\OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE) ||
// correct
$newPermissions === (\OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE)
) {
if (!$this->shareManager->shareApiLinkAllowPublicUpload()) {
throw new OCSForbiddenException($this->l->t('Public upload disabled by the administrator'));
}
if (!($share->getNode() instanceof \OCP\Files\Folder)) {
throw new OCSBadRequestException($this->l->t('Public upload is only possible for publicly shared folders'));
}
// normalize to correct public upload permissions
$newPermissions = \OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE;
}
if ($newPermissions !== null) {
$share->setPermissions($newPermissions);
$permissions = $newPermissions;
}
if ($expireDate === '') {
$share->setExpirationDate(null);
} else if ($expireDate !== null) {
try {
$expireDate = $this->parseDate($expireDate);
} catch (\Exception $e) {
throw new OCSBadRequestException($e->getMessage());
}
$share->setExpirationDate($expireDate);
}
if ($password === '') {
$share->setPassword(null);
} else if ($password !== null) {
$share->setPassword($password);
}
} else {
if ($permissions !== null) {
$permissions = (int)$permissions;
$share->setPermissions($permissions);
}
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_EMAIL) {
if ($password === '') {
$share->setPassword(null);
} else if ($password !== null) {
$share->setPassword($password);
}
}
if ($expireDate === '') {
$share->setExpirationDate(null);
} else if ($expireDate !== null) {
try {
$expireDate = $this->parseDate($expireDate);
} catch (\Exception $e) {
throw new OCSBadRequestException($e->getMessage());
}
$share->setExpirationDate($expireDate);
}
}
if ($permissions !== null && $share->getShareOwner() !== $this->currentUser) {
/* Check if this is an incomming share */
$incomingShares = $this->shareManager->getSharedWith($this->currentUser, \OCP\Share::SHARE_TYPE_USER, $share->getNode(), -1, 0);
$incomingShares = array_merge($incomingShares, $this->shareManager->getSharedWith($this->currentUser, \OCP\Share::SHARE_TYPE_GROUP, $share->getNode(), -1, 0));
/** @var \OCP\Share\IShare[] $incomingShares */
if (!empty($incomingShares)) {
$maxPermissions = 0;
foreach ($incomingShares as $incomingShare) {
$maxPermissions |= $incomingShare->getPermissions();
}
if ($share->getPermissions() & ~$maxPermissions) {
throw new OCSNotFoundException($this->l->t('Cannot increase permissions'));
}
}
}
try {
$share = $this->shareManager->updateShare($share);
} catch (\Exception $e) {
throw new OCSBadRequestException($e->getMessage());
}
return new DataResponse($this->formatShare($share));
}
/**
* @param \OCP\Share\IShare $share
* @return bool
*/
protected function canAccessShare(\OCP\Share\IShare $share, $checkGroups = true) {
// A file with permissions 0 can't be accessed by us. So Don't show it
if ($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() === $this->currentUser
) {
return true;
}
if ($checkGroups && $share->getShareType() === \OCP\Share::SHARE_TYPE_GROUP) {
$sharedWith = $this->groupManager->get($share->getSharedWith());
$user = $this->userManager->get($this->currentUser);
if ($user !== null && $sharedWith !== null && $sharedWith->inGroup($user)) {
return true;
}
}
if ($share->getShareType() === \OCP\Share::SHARE_TYPE_CIRCLE) {
// TODO: have a sanity check like above?
return true;
}
return false;
}
/**
* Make sure that the passed date is valid ISO 8601
* So YYYY-MM-DD
* If not throw an exception
*
* @param string $expireDate
*
* @throws \Exception
* @return \DateTime
*/
private function parseDate($expireDate) {
try {
$date = new \DateTime($expireDate);
} catch (\Exception $e) {
throw new \Exception('Invalid date. Format must be YYYY-MM-DD');
}
if ($date === false) {
throw new \Exception('Invalid date. Format must be YYYY-MM-DD');
}
$date->setTime(0, 0, 0);
return $date;
}
/**
* Since we have multiple providers but the OCS Share API v1 does
* not support this we need to check all backends.
*
* @param string $id
* @return \OCP\Share\IShare
* @throws ShareNotFound
*/
private function getShareById($id) {
$share = null;
// First check if it is an internal share.
try {
$share = $this->shareManager->getShareById('ocinternal:' . $id);
return $share;
} catch (ShareNotFound $e) {
// Do nothing, just try the other share type
}
try {
if ($this->shareManager->shareProviderExists(\OCP\Share::SHARE_TYPE_CIRCLE)) {
$share = $this->shareManager->getShareById('ocCircleShare:' . $id);
return $share;
}
} catch (ShareNotFound $e) {
// Do nothing, just try the other share type
}
try {
if ($this->shareManager->shareProviderExists(\OCP\Share::SHARE_TYPE_EMAIL)) {
$share = $this->shareManager->getShareById('ocMailShare:' . $id);
return $share;
}
} catch (ShareNotFound $e) {
// Do nothing, just try the other share type
}
if (!$this->shareManager->outgoingServer2ServerSharesAllowed()) {
throw new ShareNotFound();
}
$share = $this->shareManager->getShareById('ocFederatedSharing:' . $id);
return $share;
}
/**
* Lock a Node
*
* @param \OCP\Files\Node $node
*/
private function lock(\OCP\Files\Node $node) {
$node->lock(ILockingProvider::LOCK_SHARED);
$this->lockedNode = $node;
}
/**
* Cleanup the remaining locks
*/
public function cleanup() {
if ($this->lockedNode !== null) {
$this->lockedNode->unlock(ILockingProvider::LOCK_SHARED);
}
}
}