Block group sharing in API and in share manager

* Fix tests

apps/files_sharing/api/share20ocs.php

@@ -264,6 +264,10 @@ class Share20OCS {
 			$share->setSharedWith($shareWith);
 			$share->setPermissions($permissions);
 		} else if ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
+			if (!$this->shareManager->allowGroupSharing()) {
+				return new \OC_OCS_Result(null, 404, 'group sharing is disabled by the administrator');
+			}
+
 			// Valid group is required to share
 			if ($shareWith === null || !$this->groupManager->groupExists($shareWith)) {
 				return new \OC_OCS_Result(null, 404, 'please specify a valid group');

apps/files_sharing/tests/api/share20ocstest.php

@@ -759,9 +759,12 @@ class Share20OCSTest extends \Test\TestCase {
 				->with('valid-path')
 				->willReturn($path);
 
-		$group = $this->getMock('\OCP\IGroup');
 		$this->groupManager->method('groupExists')->with('validGroup')->willReturn(true);
 
+		$this->shareManager->expects($this->once())
+			->method('allowGroupSharing')
+			->willReturn(true);
+
 		$share->method('setPath')->with($path);
 		$share->method('setPermissions')->with(\OCP\Constants::PERMISSION_ALL);
 		$share->method('setShareType')->with(\OCP\Share::SHARE_TYPE_GROUP);
@@ -775,6 +778,51 @@ class Share20OCSTest extends \Test\TestCase {
 		$this->assertEquals($expected->getData(), $result->getData());
 	}
 
+	public function testCreateShareGroupNotAllowed() {
+		$share = $this->getMock('\OCP\Share\IShare');
+		$this->shareManager->method('newShare')->willReturn($share);
+
+		$this->request
+			->method('getParam')
+			->will($this->returnValueMap([
+				['path', null, 'valid-path'],
+				['permissions', null, \OCP\Constants::PERMISSION_ALL],
+				['shareType', '-1', \OCP\Share::SHARE_TYPE_GROUP],
+				['shareWith', null, 'validGroup'],
+			]));
+
+		$userFolder = $this->getMock('\OCP\Files\Folder');
+		$this->rootFolder->expects($this->once())
+			->method('getUserFolder')
+			->with('currentUser')
+			->willReturn($userFolder);
+
+		$path = $this->getMock('\OCP\Files\Folder');
+		$storage = $this->getMock('OCP\Files\Storage');
+		$storage->method('instanceOfStorage')
+			->with('OCA\Files_Sharing\External\Storage')
+			->willReturn(false);
+		$path->method('getStorage')->willReturn($storage);
+		$userFolder->expects($this->once())
+			->method('get')
+			->with('valid-path')
+			->willReturn($path);
+
+		$this->groupManager->method('groupExists')->with('validGroup')->willReturn(true);
+
+		$this->shareManager->expects($this->once())
+			->method('allowGroupSharing')
+			->willReturn(false);
+
+		$share->method('setPath')->with($path);
+
+		$expected = new \OC_OCS_Result(null, 404, 'group sharing is disabled by the administrator');
+		$result = $this->ocs->createShare();
+
+		$this->assertEquals($expected->getMeta(), $result->getMeta());
+		$this->assertEquals($expected->getData(), $result->getData());
+	}
+
 	public function testCreateShareLinkNoLinksAllowed() {
 		$this->request
 			->method('getParam')

lib/private/Share20/Manager.php

@@ -361,6 +361,11 @@ class Manager implements IManager {
 	 * @throws \Exception
 	 */
 	protected function groupCreateChecks(\OCP\Share\IShare $share) {
+		// Verify group shares are allowed
+		if (!$this->allowGroupSharing()) {
+			throw new \Exception('Group sharing is now allowed');
+		}
+
 		// Verify if the user can share with this group
 		if ($this->shareWithGroupMembersOnly()) {
 			$sharedBy = $this->userManager->get($share->getSharedBy());

tests/lib/share20/managertest.php

@@ -1147,6 +1147,22 @@ class ManagerTest extends \Test\TestCase {
 		$this->invokePrivate($this->manager, 'userCreateChecks', [$share]);
 	}
 
+	/**
+	 * @expectedException Exception
+	 * @expectedExceptionMessage Group sharing is now allowed
+	 */
+	public function testGroupCreateChecksShareWithGroupMembersGroupSharingNotAllowed() {
+		$share = $this->manager->newShare();
+
+		$this->config
+			->method('getAppValue')
+			->will($this->returnValueMap([
+				['core', 'shareapi_allow_group_sharing', 'yes', 'no'],
+			]));
+
+		$this->invokePrivate($this->manager, 'groupCreateChecks', [$share]);
+	}
+
 	/**
 	 * @expectedException Exception
 	 * @expectedExceptionMessage Only sharing within your own groups is allowed
@@ -1167,6 +1183,7 @@ class ManagerTest extends \Test\TestCase {
 			->method('getAppValue')
 			->will($this->returnValueMap([
 				['core', 'shareapi_only_share_with_group_members', 'no', 'yes'],
+				['core', 'shareapi_allow_group_sharing', 'yes', 'yes'],
 			]));
 
 		$this->invokePrivate($this->manager, 'groupCreateChecks', [$share]);
@@ -1195,6 +1212,7 @@ class ManagerTest extends \Test\TestCase {
 			->method('getAppValue')
 			->will($this->returnValueMap([
 				['core', 'shareapi_only_share_with_group_members', 'no', 'yes'],
+				['core', 'shareapi_allow_group_sharing', 'yes', 'yes'],
 			]));
 
 		$this->invokePrivate($this->manager, 'groupCreateChecks', [$share]);
@@ -1222,6 +1240,12 @@ class ManagerTest extends \Test\TestCase {
 			->with($path)
 			->willReturn([$share2]);
 
+		$this->config
+			->method('getAppValue')
+			->will($this->returnValueMap([
+				['core', 'shareapi_allow_group_sharing', 'yes', 'yes'],
+			]));
+
 		$this->invokePrivate($this->manager, 'groupCreateChecks', [$share]);
 	}
 
@@ -1240,6 +1264,12 @@ class ManagerTest extends \Test\TestCase {
 			->with($path)
 			->willReturn([$share2]);
 
+		$this->config
+			->method('getAppValue')
+			->will($this->returnValueMap([
+				['core', 'shareapi_allow_group_sharing', 'yes', 'yes'],
+			]));
+
 		$this->invokePrivate($this->manager, 'groupCreateChecks', [$share]);
 	}