Add checks for whether a user with access to a share can delete it
Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
This commit is contained in:
John Molakvoæ (skjnldsv)
parent
f02cff1304
commit
b1069b29fa
2 changed files with 294 additions and 14 deletions
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@ -336,21 +336,24 @@ class ShareAPIController extends OCSController {
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try {
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$this->lock($share->getNode());
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} catch (LockedException $e) {
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throw new OCSNotFoundException($this->l->t('could not delete share'));
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}
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if (!$this->canAccessShare($share)) {
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throw new OCSNotFoundException($this->l->t('Could not delete share'));
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}
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if ((
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$share->getShareType() === Share::SHARE_TYPE_GROUP
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|| $share->getShareType() === Share::SHARE_TYPE_ROOM
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)
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&& $share->getShareOwner() !== $this->currentUser
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&& $share->getSharedBy() !== $this->currentUser) {
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if (!$this->canAccessShare($share)) {
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throw new OCSNotFoundException($this->l->t('Wrong share ID, share doesn\'t exist'));
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}
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// if it's a group share or a room share
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// we don't delete the share, but only the
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// mount point. Allowing it to be restored
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// from the deleted shares
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if ($this->canDeleteShareFromSelf($share)) {
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$this->shareManager->deleteFromSelf($share, $this->currentUser);
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} else {
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if (!$this->canDeleteShare($share)) {
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throw new OCSForbiddenException($this->l->t('Could not delete share'));
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}
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$this->shareManager->deleteShare($share);
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}
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@ -500,7 +503,6 @@ class ShareAPIController extends OCSController {
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}
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}
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if ($sendPasswordByTalk === 'true') {
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if (!$this->appManager->isEnabledForUser('spreed')) {
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throw new OCSForbiddenException($this->l->t('Sharing %s sending the password by Nextcloud Talk failed because Nextcloud Talk is not enabled', [$path->getPath()]));
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@ -1052,6 +1054,83 @@ class ShareAPIController extends OCSController {
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return false;
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}
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/**
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* Does the user have delete permission on the share
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*
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* @param \OCP\Share\IShare $share the share to check
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* @return boolean
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*/
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protected function canDeleteShare(\OCP\Share\IShare $share): bool {
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// A file with permissions 0 can't be accessed by us. So Don't show it
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if ($share->getPermissions() === 0) {
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return false;
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}
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// if the user is the recipient, i can unshare
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// the share with self
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if ($share->getShareType() === Share::SHARE_TYPE_USER &&
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$share->getSharedWith() === $this->currentUser
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) {
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return true;
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}
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// The owner of the file and the creator of the share
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// can always delete the share
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if ($share->getShareOwner() === $this->currentUser ||
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$share->getSharedBy() === $this->currentUser
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) {
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return true;
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}
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return false;
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}
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/**
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* Does the user have delete permission on the share
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* This differs from the canDeleteShare function as it only
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* remove the share for the current user. It does NOT
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* completely delete the share but only the mount point.
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* It can then be restored from the deleted shares section.
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*
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* @param \OCP\Share\IShare $share the share to check
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* @return boolean
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*
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* @suppress PhanUndeclaredClassMethod
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*/
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protected function canDeleteShareFromSelf(\OCP\Share\IShare $share): bool {
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if ($share->getShareType() !== Share::SHARE_TYPE_GROUP &&
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$share->getShareType() !== Share::SHARE_TYPE_ROOM
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) {
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return false;
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}
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if ($share->getShareOwner() === $this->currentUser ||
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$share->getSharedBy() === $this->currentUser
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) {
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// Delete the whole share, not just for self
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return false;
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}
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// If in the recipient group, you can delete the share from self
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if ($share->getShareType() === Share::SHARE_TYPE_GROUP) {
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$sharedWith = $this->groupManager->get($share->getSharedWith());
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$user = $this->userManager->get($this->currentUser);
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if ($user !== null && $sharedWith !== null && $sharedWith->inGroup($user)) {
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return true;
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}
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}
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if ($share->getShareType() === Share::SHARE_TYPE_ROOM) {
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try {
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return $this->getRoomShareHelper()->canAccessShare($share, $this->currentUser);
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} catch (QueryException $e) {
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return false;
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}
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}
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return false;
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}
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/**
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* Make sure that the passed date is valid ISO 8601
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* So YYYY-MM-DD
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@ -1228,4 +1307,5 @@ class ShareAPIController extends OCSController {
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return false;
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}
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}
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@ -213,19 +213,20 @@ class ShareAPIControllerTest extends TestCase {
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/**
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* @expectedException \OCP\AppFramework\OCS\OCSNotFoundException
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* @expectedExceptionMessage could not delete share
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* @expectedExceptionMessage Could not delete share
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*/
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public function testDeleteShareLocked() {
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$node = $this->getMockBuilder(File::class)->getMock();
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$share = $this->newShare();
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$share->setSharedBy($this->currentUser)
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->setNode($node);
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$share->setNode($node);
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$this->shareManager
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->expects($this->once())
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->method('getShareById')
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->with('ocinternal:42')
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->willReturn($share);
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$this->shareManager
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->expects($this->never())
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->method('deleteShare')
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@ -235,6 +236,205 @@ class ShareAPIControllerTest extends TestCase {
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->method('lock')
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->with(\OCP\Lock\ILockingProvider::LOCK_SHARED)
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->will($this->throwException(new LockedException('mypath')));
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$this->assertFalse($this->invokePrivate($this->ocs, 'canDeleteFromSelf', [$share]));
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$this->assertFalse($this->invokePrivate($this->ocs, 'canDeleteShare', [$share]));
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$this->ocs->deleteShare(42);
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}
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/**
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* You can always remove a share that was shared with you
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*/
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public function testDeleteShareWithMe() {
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$node = $this->getMockBuilder(File::class)->getMock();
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$share = $this->newShare();
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$share->setSharedWith($this->currentUser)
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->setShareType(\OCP\Share::SHARE_TYPE_USER)
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->setNode($node);
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$this->shareManager
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->expects($this->once())
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->method('getShareById')
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->with('ocinternal:42')
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->willReturn($share);
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$this->shareManager
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->expects($this->once())
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->method('deleteShare')
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->with($share);
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$node->expects($this->once())
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->method('lock')
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->with(\OCP\Lock\ILockingProvider::LOCK_SHARED);
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$this->assertFalse($this->invokePrivate($this->ocs, 'canDeleteFromSelf', [$share]));
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$this->assertTrue($this->invokePrivate($this->ocs, 'canDeleteShare', [$share]));
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$this->ocs->deleteShare(42);
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}
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/**
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* You can always delete a share you own
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*/
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public function testDeleteShareOwner() {
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$node = $this->getMockBuilder(File::class)->getMock();
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$share = $this->newShare();
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$share->setSharedBy($this->currentUser)
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->setNode($node);
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$this->shareManager
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->expects($this->once())
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->method('getShareById')
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->with('ocinternal:42')
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->willReturn($share);
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$this->shareManager
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->expects($this->once())
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->method('deleteShare')
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->with($share);
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$node->expects($this->once())
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->method('lock')
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->with(\OCP\Lock\ILockingProvider::LOCK_SHARED);
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$this->assertFalse($this->invokePrivate($this->ocs, 'canDeleteFromSelf', [$share]));
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$this->assertTrue($this->invokePrivate($this->ocs, 'canDeleteShare', [$share]));
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$this->ocs->deleteShare(42);
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}
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/**
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* You can always delete a share when you own
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* the file path it belong to
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*/
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public function testDeleteShareFileOwner() {
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$node = $this->getMockBuilder(File::class)->getMock();
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$share = $this->newShare();
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$share->setShareOwner($this->currentUser)
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->setNode($node);
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$this->shareManager
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->expects($this->once())
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->method('getShareById')
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->with('ocinternal:42')
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->willReturn($share);
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$this->shareManager
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->expects($this->once())
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->method('deleteShare')
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->with($share);
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$node->expects($this->once())
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->method('lock')
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->with(\OCP\Lock\ILockingProvider::LOCK_SHARED);
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$this->assertFalse($this->invokePrivate($this->ocs, 'canDeleteFromSelf', [$share]));
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$this->assertTrue($this->invokePrivate($this->ocs, 'canDeleteShare', [$share]));
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$this->ocs->deleteShare(42);
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}
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/**
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* You can remove (the mountpoint, not the share)
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* a share if you're in the group the share is shared with
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*/
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public function testDeleteSharedWithMyGroup() {
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$node = $this->getMockBuilder(File::class)->getMock();
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$share = $this->newShare();
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$share->setShareType(\OCP\Share::SHARE_TYPE_GROUP)
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->setSharedWith('group')
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->setNode($node);
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$this->shareManager
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->expects($this->once())
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->method('getShareById')
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->with('ocinternal:42')
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->willReturn($share);
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// canDeleteShareFromSelf
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$user = $this->createMock(IUser::class);
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$group = $this->getMockBuilder('OCP\IGroup')->getMock();
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$this->groupManager
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->method('get')
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->with('group')
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->willReturn($group);
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$this->userManager
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->method('get')
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->with($this->currentUser)
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->willReturn($user);
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$group->method('inGroup')
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->with($user)
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->willReturn(true);
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$node->expects($this->once())
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->method('lock')
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->with(\OCP\Lock\ILockingProvider::LOCK_SHARED);
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$this->shareManager->expects($this->once())
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->method('deleteFromSelf')
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->with($share, $this->currentUser);
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$this->shareManager->expects($this->never())
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->method('deleteShare');
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$this->assertTrue($this->invokePrivate($this->ocs, 'canDeleteShareFromSelf', [$share]));
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$this->assertFalse($this->invokePrivate($this->ocs, 'canDeleteShare', [$share]));
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$this->ocs->deleteShare(42);
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}
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/**
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* You cannot remove a share if you're not
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* in the group the share is shared with
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* @expectedException \OCP\AppFramework\OCS\OCSNotFoundException
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* @expectedExceptionMessage Wrong share ID, share doesn't exist
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*/
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public function testDeleteSharedWithGroupIDontBelongTo() {
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$node = $this->getMockBuilder(File::class)->getMock();
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$share = $this->newShare();
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$share->setShareType(\OCP\Share::SHARE_TYPE_GROUP)
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->setSharedWith('group')
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->setNode($node);
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$this->shareManager
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->expects($this->once())
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->method('getShareById')
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->with('ocinternal:42')
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->willReturn($share);
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// canDeleteShareFromSelf
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$user = $this->createMock(IUser::class);
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$group = $this->getMockBuilder('OCP\IGroup')->getMock();
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$this->groupManager
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->method('get')
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->with('group')
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->willReturn($group);
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$this->userManager
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->method('get')
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->with($this->currentUser)
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->willReturn($user);
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$group->method('inGroup')
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->with($user)
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->willReturn(false);
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$node->expects($this->once())
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->method('lock')
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->with(\OCP\Lock\ILockingProvider::LOCK_SHARED);
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$this->shareManager->expects($this->never())
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->method('deleteFromSelf');
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$this->shareManager->expects($this->never())
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->method('deleteShare');
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$this->assertFalse($this->invokePrivate($this->ocs, 'canDeleteShareFromSelf', [$share]));
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$this->assertFalse($this->invokePrivate($this->ocs, 'canDeleteShare', [$share]));
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$this->ocs->deleteShare(42);
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}
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