owncloud / core

			}

			if ($shareWithinGroupOnly) {

				$inGroup = \array_intersect(self::getGroupsForUser($uidOwner), self::getGroupsForUser($shareWith));

				if (empty($inGroup)) {

					$message = 'Sharing %s failed, because the user '

						.'%s is not a member of any groups that %s is a member of';

					$message_t = $l->t('Sharing %s failed, because the user %s is not a member of any groups that %s is a member of', [$itemName, $shareWith, $uidOwner]);

					\OCP\Util::writeLog('OCP\Share', \sprintf($message, $itemName, $shareWith, $uidOwner), \OCP\Util::DEBUG);

					throw new \Exception($message_t);

				}

			}

			// Check if the item source is already shared with the user, either from the same owner or a different user

			if ($checkExists = self::getItems($itemType, $itemSource, self::$shareTypeUserAndGroups,

				\OCP\Util::writeLog('OCP\Share', \sprintf($message, $itemSourceName, $shareWith), \OCP\Util::DEBUG);

				throw new \Exception($message_t);

			}

			if ($shareWithMembershipGroupOnly && !\OC::$server->getGroupManager()->inGroup($uidOwner, $shareWith)) {

				$message = 'Sharing %s failed, because '

					.'%s is not a member of the group %s';

				$message_t = $l->t('Sharing %s failed, because %s is not a member of the group %s', [$itemSourceName, $uidOwner, $shareWith]);

				\OCP\Util::writeLog('OCP\Share', \sprintf($message, $itemSourceName, $uidOwner, $shareWith), \OCP\Util::DEBUG);

				throw new \Exception($message_t);

			}

			// Check if the item source is already shared with the group, either from the same owner or a different user

			// The check for each user in the group is done inside the put() function

			if ($checkExists = self::getItems($itemType, $itemSource, self::SHARE_TYPE_GROUP, $shareWith,

			$result['suggestedFileTarget'] = null;

			$result['itemSource'] = $itemSource;

			$result['expirationDate'] = $expirationDate;

			if (!$backend->isValidSource($itemSource, $uidOwner)) {

				$message = 'Sharing %s failed, because the sharing backend for '

					.'%s could not find its source';

				$message_t = $l->t('Sharing %s failed, because the sharing backend for %s could not find its source', [$itemSource, $itemType]);

				\OCP\Util::writeLog('OCP\Share', \sprintf($message, $itemSource, $itemType), \OCP\Util::DEBUG);

				throw new \Exception($message_t);

			}

			$result['filePath'] = null;

			$result['fileSource'] = null;

		}