From d0043e34ddaf7510d88267fb4190a0672b104e3a Mon Sep 17 00:00:00 2001
From: Michael Jumper <mjumper@apache.org>
Date: Fri, 21 Jan 2022 15:23:41 -0800
Subject: [PATCH] GUACAMOLE-641: Allow token mapping file to not exist.

Some tokens may be standardized or specific to the implementation, and
may not need to be defined in YAML.
---
 .../apache/guacamole/vault/conf/VaultConfigurationService.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/extensions/guacamole-vault/modules/guacamole-vault-base/src/main/java/org/apache/guacamole/vault/conf/VaultConfigurationService.java b/extensions/guacamole-vault/modules/guacamole-vault-base/src/main/java/org/apache/guacamole/vault/conf/VaultConfigurationService.java
index b398c4919..25d1b9326 100644
--- a/extensions/guacamole-vault/modules/guacamole-vault-base/src/main/java/org/apache/guacamole/vault/conf/VaultConfigurationService.java
+++ b/extensions/guacamole-vault/modules/guacamole-vault-base/src/main/java/org/apache/guacamole/vault/conf/VaultConfigurationService.java
@@ -25,6 +25,7 @@ import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
 import com.google.inject.Inject;
 import java.io.File;
 import java.io.IOException;
+import java.util.Collections;
 import java.util.Map;
 import org.apache.guacamole.GuacamoleException;
 import org.apache.guacamole.GuacamoleServerException;
@@ -91,6 +92,8 @@ public abstract class VaultConfigurationService {
 
         // Get configuration file from GUACAMOLE_HOME
         File confFile = new File(environment.getGuacamoleHome(), tokenMappingFilename);
+        if (!confFile.exists())
+            return Collections.emptyMap();
 
         // Deserialize token mapping from YAML
         try {