Expose enumeration config though share manager

Signed-off-by: Julius Härtl <jus@bitgrid.net>

lib/private/Share20/Manager.php

@@ -1764,6 +1764,15 @@ class Manager implements IManager {
 		return $this->config->getAppValue('core', 'shareapi_allow_group_sharing', 'yes') === 'yes';
 	}
 
+	public function allowEnumeration(): bool {
+		return $this->config->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'yes') === 'yes';
+	}
+
+	public function limitEnumerationToGroups(): bool {
+		return $this->allowEnumeration() &&
+			$this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_group', 'no') === 'yes';
+	}
+
 	/**
 	 * Copied from \OC_Util::isSharingDisabledForUser
 	 *

lib/public/Share/IManager.php

@@ -368,6 +368,22 @@ interface IManager {
 	 */
 	public function allowGroupSharing();
 
+	/**
+	 * Check if user enumeration is allowed
+	 *
+	 * @return bool
+	 * @since 19.0.0
+	 */
+	public function allowEnumeration(): bool;
+
+	/**
+	 * Check if user enumeration is limited to the users groups
+	 *
+	 * @return bool
+	 * @since 19.0.0
+	 */
+	public function limitEnumerationToGroups(): bool;
+
 	/**
 	 * Check if sharing is disabled for the given user
 	 *