From c8631d607ef827f0eb29312faf7b2b808e1a8e7d Mon Sep 17 00:00:00 2001
From: Bjoern Schiessle <bjoern@schiessle.org>
Date: Mon, 25 Jun 2018 11:40:16 +0200
Subject: [PATCH] add setting to enable/disable federated group sharing

Signed-off-by: Bjoern Schiessle <bjoern@schiessle.org>
---
 .../lib/FederatedShareProvider.php            | 45 ++++++++++++++++++-
 .../lib/Settings/Admin.php                    |  3 ++
 .../templates/settings-admin.php              | 17 ++++++-
 3 files changed, 63 insertions(+), 2 deletions(-)

diff --git a/apps/federatedfilesharing/lib/FederatedShareProvider.php b/apps/federatedfilesharing/lib/FederatedShareProvider.php
index f81b826f12..d32560c4ff 100644
--- a/apps/federatedfilesharing/lib/FederatedShareProvider.php
+++ b/apps/federatedfilesharing/lib/FederatedShareProvider.php
@@ -30,6 +30,7 @@
 namespace OCA\FederatedFileSharing;
 
 use OC\Share20\Share;
+use OCP\Federation\ICloudFederationProviderManager;
 use OCP\Federation\ICloudIdManager;
 use OCP\DB\QueryBuilder\IQueryBuilder;
 use OCP\Files\Folder;
@@ -92,6 +93,9 @@ class FederatedShareProvider implements IShareProvider {
 	/** @var \OCP\GlobalScale\IConfig */
 	private $gsConfig;
 
+	/** @var ICloudFederationProviderManager */
+	private $cloudFederationProviderManager;
+
 	/**
 	 * DefaultShareProvider constructor.
 	 *
@@ -106,6 +110,7 @@ class FederatedShareProvider implements IShareProvider {
 	 * @param IUserManager $userManager
 	 * @param ICloudIdManager $cloudIdManager
 	 * @param \OCP\GlobalScale\IConfig $globalScaleConfig
+	 * @param ICloudFederationProviderManager $cloudFederationProviderManager
 	 */
 	public function __construct(
 			IDBConnection $connection,
@@ -118,7 +123,8 @@ class FederatedShareProvider implements IShareProvider {
 			IConfig $config,
 			IUserManager $userManager,
 			ICloudIdManager $cloudIdManager,
-			\OCP\GlobalScale\IConfig $globalScaleConfig
+			\OCP\GlobalScale\IConfig $globalScaleConfig,
+			ICloudFederationProviderManager $cloudFederationProviderManager
 	) {
 		$this->dbConnection = $connection;
 		$this->addressHandler = $addressHandler;
@@ -131,6 +137,7 @@ class FederatedShareProvider implements IShareProvider {
 		$this->userManager = $userManager;
 		$this->cloudIdManager = $cloudIdManager;
 		$this->gsConfig = $globalScaleConfig;
+		$this->cloudFederationProviderManager = $cloudFederationProviderManager;
 	}
 
 	/**
@@ -967,6 +974,42 @@ class FederatedShareProvider implements IShareProvider {
 		return ($result === 'yes');
 	}
 
+
+	/**
+	 * check if users from other Nextcloud instances are allowed to send federated group shares
+	 *
+	 * @return bool
+	 */
+	public function isOutgoingServer2serverGroupShareEnabled() {
+		if ($this->gsConfig->onlyInternalFederation()) {
+			return false;
+		}
+		$result = $this->config->getAppValue('files_sharing', 'outgoing_server2server_group_share_enabled', 'no');
+		return ($result === 'yes');
+	}
+
+	/**
+	 * check if users are allowed to receive federated group shares
+	 *
+	 * @return bool
+	 */
+	public function isIncomingServer2serverGroupShareEnabled() {
+		if ($this->gsConfig->onlyInternalFederation()) {
+			return false;
+		}
+		$result = $this->config->getAppValue('files_sharing', 'incoming_server2server_group_share_enabled', 'no');
+		return ($result === 'yes');
+	}
+
+	/**
+	 * check if federated group sharing is supported, therefore the OCM API need to be enabled
+	 *
+	 * @return bool
+	 */
+	public function isFederatedGroupSharingSupported() {
+		return $this->cloudFederationProviderManager->isReady();
+	}
+
 	/**
 	 * Check if querying sharees on the lookup server is enabled
 	 *
diff --git a/apps/federatedfilesharing/lib/Settings/Admin.php b/apps/federatedfilesharing/lib/Settings/Admin.php
index cbeaa167ff..aea7957a49 100644
--- a/apps/federatedfilesharing/lib/Settings/Admin.php
+++ b/apps/federatedfilesharing/lib/Settings/Admin.php
@@ -58,6 +58,9 @@ class Admin implements ISettings {
 			'internalOnly' => $this->gsConfig->onlyInternalFederation(),
 			'outgoingServer2serverShareEnabled' => $this->fedShareProvider->isOutgoingServer2serverShareEnabled(),
 			'incomingServer2serverShareEnabled' => $this->fedShareProvider->isIncomingServer2serverShareEnabled(),
+			'federatedGroupSharingSupported' => $this->fedShareProvider->isFederatedGroupSharingSupported(),
+			'outgoingServer2serverGroupShareEnabled' => $this->fedShareProvider->isOutgoingServer2serverGroupShareEnabled(),
+			'incomingServer2serverGroupShareEnabled' => $this->fedShareProvider->isIncomingServer2serverGroupShareEnabled(),
 			'lookupServerEnabled' => $this->fedShareProvider->isLookupServerQueriesEnabled(),
 			'lookupServerUploadEnabled' => $this->fedShareProvider->isLookupServerUploadEnabled(),
 		];
diff --git a/apps/federatedfilesharing/templates/settings-admin.php b/apps/federatedfilesharing/templates/settings-admin.php
index 187d75f21a..1b9b88dc03 100644
--- a/apps/federatedfilesharing/templates/settings-admin.php
+++ b/apps/federatedfilesharing/templates/settings-admin.php
@@ -23,7 +23,6 @@ script('federatedfilesharing', 'settings-admin');
 			<?php p($l->t('Allow users on this server to send shares to other servers'));?>
 		</label>
 	</p>
-
 	<p>
 		<input type="checkbox" name="incoming_server2server_share_enabled" id="incomingServer2serverShareEnabled" class="checkbox"
 			   value="1" <?php if ($_['incomingServer2serverShareEnabled']) print_unescaped('checked="checked"'); ?> />
@@ -31,6 +30,22 @@ script('federatedfilesharing', 'settings-admin');
 			<?php p($l->t('Allow users on this server to receive shares from other servers'));?>
 		</label><br/>
 	</p>
+	<?php if($_['federatedGroupSharingSupported']): ?>
+	<p>
+		<input type="checkbox" name="outgoing_server2server_group_share_enabled" id="outgoingServer2serverGroupShareEnabled" class="checkbox"
+			   value="1" <?php if ($_['outgoingServer2serverGroupShareEnabled']) print_unescaped('checked="checked"'); ?> />
+		<label for="outgoingServer2serverGroupShareEnabled">
+			<?php p($l->t('Allow users on this server to send shares to groups on other servers'));?>
+		</label>
+	</p>
+	<p>
+		<input type="checkbox" name="incoming_server2server_group_share_enabled" id="incomingServer2serverGroupShareEnabled" class="checkbox"
+			   value="1" <?php if ($_['incomingServer2serverGroupShareEnabled']) print_unescaped('checked="checked"'); ?> />
+		<label for="incomingServer2serverGroupShareEnabled">
+			<?php p($l->t('Allow users on this server to receive group shares from other servers'));?>
+		</label><br/>
+	</p>
+	<?php endif; ?>
 	<p>
 		<input type="checkbox" name="lookupServerEnabled" id="lookupServerEnabled" class="checkbox"
 			   value="1" <?php if ($_['lookupServerEnabled']) print_unescaped('checked="checked"'); ?> />