From c24d1b77cf2e5aa064782d87aba2d6978c70c322 Mon Sep 17 00:00:00 2001
From: Leon Rosenberg <leon@anotheria.net>
Date: Wed, 24 Jan 2024 13:57:44 +0100
Subject: [PATCH] handling for jvmversion 21, setting security manager now in
 ServerSideUtils

---
 .../core/util/ServerSideUtils.java            | 25 +++++++++++++++++++
 .../core/util/ServerSideUtilsTest.java        | 15 +++++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 distributeme-core/src/test/java/org/distributeme/core/util/ServerSideUtilsTest.java

diff --git a/distributeme-core/src/main/java/org/distributeme/core/util/ServerSideUtils.java b/distributeme-core/src/main/java/org/distributeme/core/util/ServerSideUtils.java
index 2a9a900..cb793bb 100644
--- a/distributeme-core/src/main/java/org/distributeme/core/util/ServerSideUtils.java
+++ b/distributeme-core/src/main/java/org/distributeme/core/util/ServerSideUtils.java
@@ -3,6 +3,7 @@
 import org.distributeme.core.AbstractCallContext;
 import org.distributeme.core.routing.Constants;
 
+import java.security.Permission;
 import java.util.Map;
 
 /**
@@ -59,4 +60,28 @@ private static final boolean _isBlacklisted(Map transportableCallContext){
 		Boolean blacklistedFlag = (Boolean)transportableCallContext.get(Constants.ATT_BLACKLISTED);
 		return blacklistedFlag != null && blacklistedFlag;
 	}
+
+	public static void setSecurityManagerIfRequired(){
+		if (shouldSecurityManagerBeSet()){
+			if (System.getSecurityManager()==null)
+				// We allow all operations.
+				System.setSecurityManager(new SecurityManager(){
+					public void checkPermission(Permission perm) { }
+				});
+		}
+	}
+
+	/* TEST VISIBILITY */ static boolean shouldSecurityManagerBeSet(String jvmVersionString){
+		if (jvmVersionString == null)
+			return false;
+		if (jvmVersionString.contains(".")){
+			return Integer.parseInt(jvmVersionString.substring(0, jvmVersionString.indexOf('.')))<17;
+		}
+		return false;
+
+	}
+
+	private static final boolean shouldSecurityManagerBeSet(){
+		return shouldSecurityManagerBeSet(System.getProperty("java.version"));
+	}
 }
diff --git a/distributeme-core/src/test/java/org/distributeme/core/util/ServerSideUtilsTest.java b/distributeme-core/src/test/java/org/distributeme/core/util/ServerSideUtilsTest.java
new file mode 100644
index 0000000..4928539
--- /dev/null
+++ b/distributeme-core/src/test/java/org/distributeme/core/util/ServerSideUtilsTest.java
@@ -0,0 +1,15 @@
+package org.distributeme.core.util;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class ServerSideUtilsTest {
+    @Test
+    public void testShouldSecurityManagerBeSet() {
+        assertEquals(true, ServerSideUtils.shouldSecurityManagerBeSet("1.8.0_311"));
+        assertEquals(false, ServerSideUtils.shouldSecurityManagerBeSet("21"));
+        assertEquals(false, ServerSideUtils.shouldSecurityManagerBeSet("21.0.1"));
+        assertEquals(false, ServerSideUtils.shouldSecurityManagerBeSet("21.0.1-LTE-ea"));
+    }
+}