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Restrict share handling to the owner only 

Otherwise group members can remove the share for the complete group,
remove edit permissions and even single user shares for other users.

Signed-off-by: Joas Schilling <coding@schilljs.com>
This commit is contained in:
Joas Schilling 2017-02-23 10:31:28 +01:00
parent 799b229a68
commit c2d1e6e7ff
No known key found for this signature in database
GPG Key ID: E166FD8976B3BAC8
3 changed files with 34 additions and 8 deletions
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17
apps/dav/lib/CalDAV/Calendar.php
View File

@ -61,8 +61,12 @@ class Calendar extends \Sabre\CalDAV\Calendar implements IShareable {
* @param array $add
* @param array $remove
* @return void
* @throws Forbidden
*/
function updateShares(array $add, array $remove) {
public function updateShares(array $add, array $remove) {
if ($this->isShared()) {
throw new Forbidden();
}
/** @var CalDavBackend $calDavBackend */
$calDavBackend = $this->caldavBackend;
$calDavBackend->updateShares($this, $add, $remove);
@ -80,7 +84,10 @@ class Calendar extends \Sabre\CalDAV\Calendar implements IShareable {
*
* @return array
*/
function getShares() {
public function getShares() {
if ($this->isShared()) {
return [];
}
/** @var CalDavBackend $calDavBackend */
$calDavBackend = $this->caldavBackend;
return $calDavBackend->getShares($this->getResourceId());
@ -136,6 +143,10 @@ class Calendar extends \Sabre\CalDAV\Calendar implements IShareable {
];
}
if ($this->isShared()) {
return $acl;
}
/** @var CalDavBackend $calDavBackend */
$calDavBackend = $this->caldavBackend;
return $calDavBackend->applyShareAcl($this->getResourceId(), $acl);
@ -156,7 +167,7 @@ class Calendar extends \Sabre\CalDAV\Calendar implements IShareable {
if (isset($this->calendarInfo['{http://owncloud.org/ns}owner-principal']) &&
$this->calendarInfo['{http://owncloud.org/ns}owner-principal'] !== $this->calendarInfo['principaluri']) {
$principal = 'principal:' . parent::getOwner();
$shares = $this->getShares();
$shares = $this->caldavBackend->getShares($this->getResourceId());
$shares = array_filter($shares, function($share) use ($principal){
return $share['href'] === $principal;
});

21
apps/dav/lib/CardDAV/AddressBook.php
View File

@ -64,8 +64,12 @@ class AddressBook extends \Sabre\CardDAV\AddressBook implements IShareable {
* @param array $add
* @param array $remove
* @return void
* @throws Forbidden
*/
function updateShares(array $add, array $remove) {
if ($this->isShared()) {
throw new Forbidden();
}
/** @var CardDavBackend $carddavBackend */
$carddavBackend = $this->carddavBackend;
$carddavBackend->updateShares($this, $add, $remove);
@ -84,6 +88,9 @@ class AddressBook extends \Sabre\CardDAV\AddressBook implements IShareable {
* @return array
*/
function getShares() {
if ($this->isShared()) {
return [];
}
/** @var CardDavBackend $carddavBackend */
$carddavBackend = $this->carddavBackend;
return $carddavBackend->getShares($this->getResourceId());
@ -123,6 +130,10 @@ class AddressBook extends \Sabre\CardDAV\AddressBook implements IShareable {
];
}
if ($this->isShared()) {
return $acl;
}
/** @var CardDavBackend $carddavBackend */
$carddavBackend = $this->carddavBackend;
return $carddavBackend->applyShareAcl($this->getResourceId(), $acl);
@ -160,7 +171,7 @@ class AddressBook extends \Sabre\CardDAV\AddressBook implements IShareable {
function delete() {
if (isset($this->addressBookInfo['{http://owncloud.org/ns}owner-principal'])) {
$principal = 'principal:' . parent::getOwner();
$shares = $this->getShares();
$shares = $this->carddavBackend->getShares($this->getResourceId());
$shares = array_filter($shares, function($share) use ($principal){
return $share['href'] === $principal;
});
@ -192,6 +203,14 @@ class AddressBook extends \Sabre\CardDAV\AddressBook implements IShareable {
return $cardDavBackend->collectCardProperties($this->getResourceId(), 'CATEGORIES');
}
private function isShared() {
if (!isset($this->addressBookInfo['{http://owncloud.org/ns}owner-principal'])) {
return false;
}
return $this->addressBookInfo['{http://owncloud.org/ns}owner-principal'] !== $this->addressBookInfo['principaluri'];
}
private function canWrite() {
if (isset($this->addressBookInfo['{http://owncloud.org/ns}read-only'])) {
return !$this->addressBookInfo['{http://owncloud.org/ns}read-only'];

4
apps/dav/tests/unit/CalDAV/CalDavBackendTest.php
View File

@ -143,8 +143,6 @@ class CalDavBackendTest extends AbstractCalDavBackendTest {
$this->assertAcl(self::UNIT_TEST_USER, '{DAV:}write', $acl);
$this->assertAccess($userCanRead, self::UNIT_TEST_USER1, '{DAV:}read', $acl);
$this->assertAccess($userCanWrite, self::UNIT_TEST_USER1, '{DAV:}write', $acl);
$this->assertAccess($groupCanRead, self::UNIT_TEST_GROUP, '{DAV:}read', $acl);
$this->assertAccess($groupCanWrite, self::UNIT_TEST_GROUP, '{DAV:}write', $acl);
$this->assertEquals(self::UNIT_TEST_USER, $calendar->getOwner());
// test acls on the child
@ -178,8 +176,6 @@ EOD;
$this->assertAcl(self::UNIT_TEST_USER, '{DAV:}write', $acl);
$this->assertAccess($userCanRead, self::UNIT_TEST_USER1, '{DAV:}read', $acl);
$this->assertAccess($userCanWrite, self::UNIT_TEST_USER1, '{DAV:}write', $acl);
$this->assertAccess($groupCanRead, self::UNIT_TEST_GROUP, '{DAV:}read', $acl);
$this->assertAccess($groupCanWrite, self::UNIT_TEST_GROUP, '{DAV:}write', $acl);
// delete the address book
$this->dispatcher->expects($this->at(0))