1 files changed, 122 insertions, 0 deletions
diff --git a/lib/private/Collaboration/Collaborators/GroupPlugin.php b/lib/private/Collaboration/Collaborators/GroupPlugin.php
new file mode 100644
index 00000000000..d156190eed9
--- /dev/null
+++ b/lib/private/Collaboration/Collaborators/GroupPlugin.php
@@ -0,0 +1,122 @@
+<?php
+/**
+ * @copyright Copyright (c) 2017 Arthur Schiwon <blizzz@arthur-schiwon.de>
+ *
+ * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OC\Collaboration\Collaborators;
+
+use OCP\Collaboration\Collaborators\ISearchPlugin;
+use OCP\Collaboration\Collaborators\ISearchResult;
+use OCP\IConfig;
+use OCP\IGroup;
+use OCP\IGroupManager;
+use OCP\IUserSession;
+use OCP\Share;
+
+class GroupPlugin implements ISearchPlugin {
+	protected $shareeEnumeration;
+	protected $shareWithGroupOnly;
+
+	/** @var IGroupManager */
+	private $groupManager;
+	/** @var IConfig */
+	private $config;
+	/** @var IUserSession */
+	private $userSession;
+
+	public function __construct(IConfig $config, IGroupManager $groupManager, IUserSession $userSession) {
+		$this->groupManager = $groupManager;
+		$this->config = $config;
+		$this->userSession = $userSession;
+
+		$this->shareeEnumeration = $this->config->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'yes') === 'yes';
+		$this->shareWithGroupOnly = $this->config->getAppValue('core', 'shareapi_only_share_with_group_members', 'no') === 'yes';
+	}
+
+	public function search($search, $limit, $offset, ISearchResult $searchResult) {
+		$hasMoreResults = false;
+		$result = ['wide' => [], 'exact' => []];
+
+		$groups = $this->groupManager->search($search, $limit, $offset);
+		$groupIds = array_map(function (IGroup $group) { return $group->getGID(); }, $groups);
+
+		if (!$this->shareeEnumeration || sizeof($groups) < $limit) {
+			$hasMoreResults = true;
+		}
+
+		$userGroups =  [];
+		if (!empty($groups) && $this->shareWithGroupOnly) {
+			// Intersect all the groups that match with the groups this user is a member of
+			$userGroups = $this->groupManager->getUserGroups($this->userSession->getUser());
+			$userGroups = array_map(function (IGroup $group) { return $group->getGID(); }, $userGroups);
+			$groupIds = array_intersect($groupIds, $userGroups);
+		}
+
+		$lowerSearch = strtolower($search);
+		foreach ($groups as $group) {
+			// FIXME: use a more efficient approach
+			$gid = $group->getGID();
+			if (!in_array($gid, $groupIds)) {
+				continue;
+			}
+			if (strtolower($gid) === $lowerSearch || strtolower($group->getDisplayName()) === $lowerSearch) {
+				$result['exact'][] = [
+					'label' => $group->getDisplayName(),
+					'value' => [
+						'shareType' => Share::SHARE_TYPE_GROUP,
+						'shareWith' => $gid,
+					],
+				];
+			} else {
+				$result['wide'][] = [
+					'label' => $group->getDisplayName(),
+					'value' => [
+						'shareType' => Share::SHARE_TYPE_GROUP,
+						'shareWith' => $gid,
+					],
+				];
+			}
+		}
+
+		if ($offset === 0 && empty($result['exact'])) {
+			// On page one we try if the search result has a direct hit on the
+			// user id and if so, we add that to the exact match list
+			$group = $this->groupManager->get($search);
+			if ($group instanceof IGroup && (!$this->shareWithGroupOnly || in_array($group->getGID(), $userGroups))) {
+				array_push($result['exact'], [
+					'label' => $group->getDisplayName(),
+					'value' => [
+						'shareType' => Share::SHARE_TYPE_GROUP,
+						'shareWith' => $group->getGID(),
+					],
+				]);
+			}
+		}
+
+		if (!$this->shareeEnumeration) {
+			$result['wide'] = [];
+		}
+
+		$searchResult->addResultSet('groups', $result['wide'], $result['exact']);
+
+		return [$result, $hasMoreResults];
+	}
+}