Issue 52415:Adjust configuration for Tomcat error pages

Author: labkey-jeckels

server/embedded/src/org/labkey/embedded/LabKeyErrorReportValve.java

@@ -0,0 +1,13 @@
+package org.labkey.embedded;
+
+import org.apache.catalina.valves.ErrorReportValve;
+
+/** Issue 52415: Allow for Configuration of Default Error Page */
+public class LabKeyErrorReportValve extends ErrorReportValve
+{
+    public LabKeyErrorReportValve()
+    {
+        // Don't show Tomcat version info on its 404 and other error pages
+        setShowServerInfo(false);
+    }
+}

server/embedded/src/org/labkey/embedded/LabKeyServer.java

@@ -75,7 +75,11 @@ public static void main(String[] args)
 
                 "server.tomcat.accesslog.enabled", "true",
                 "server.tomcat.accesslog.pattern", "%h %l %u %t \"%r\" %s %b %D %S %I \"%{Referer}i\" \"%{User-Agent}i\" %{LABKEY.username}s %{X-Forwarded-For}i",
-                "jsonaccesslog.pattern", "%h %t %m %U %s %b %D %S \"%{Referer}i\" \"%{User-Agent}i\" %{LABKEY.username}s %{X-Forwarded-For}i"
+                "jsonaccesslog.pattern", "%h %t %m %U %s %b %D %S \"%{Referer}i\" \"%{User-Agent}i\" %{LABKEY.username}s %{X-Forwarded-For}i",
+
+                // Issue 52415: Omit stack traces from Tomcat error pages by default, but propagate error messages
+                "server.error.include-stacktrace", "never",
+                "server.error.include-message", "always"
         ));
         application.setBannerMode(Banner.Mode.OFF);
         application.run(args);

server/embedded/src/org/labkey/embedded/LabKeyTomcatServletWebServerFactory.java

@@ -1,7 +1,9 @@
 package org.labkey.embedded;
 
+import org.apache.catalina.Container;
 import org.apache.catalina.Host;
 import org.apache.catalina.core.StandardContext;
+import org.apache.catalina.core.StandardHost;
 import org.apache.catalina.loader.WebappLoader;
 import org.apache.catalina.startup.Tomcat;
 import org.apache.catalina.valves.JsonAccessLogValve;
@@ -54,6 +56,14 @@ public LabKeyTomcatServletWebServerFactory(LabKeyServer server)
                 }
             }
         });
+
+        addContextCustomizers(context -> {
+            final Container parent = context.getParent();
+            if (parent instanceof StandardHost sh)
+            {
+                sh.setErrorReportValveClass(LabKeyErrorReportValve.class.getName());
+            }
+        });
     }
 
     @Override