From 4c77a2413e3a896b33ad40c8950748d96b2b1465 Mon Sep 17 00:00:00 2001
From: hummel <oliver@192.168.127.203>
Date: Tue, 5 May 2026 11:42:27 +0200
Subject: [PATCH 1/2] =?UTF-8?q?Proguard=20als=20Obfuscator=20eingef=C3=BCg?=
 =?UTF-8?q?t.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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Use on your own risk, das kann bei größeren Programmen zu allerlei
Folgefehlern führen, die über keep-Anweisungen (s. Zeile 116 ff) einzeln
abgefangen werden müssen.
---
 MvnDemo/pom.xml | 44 ++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 42 insertions(+), 2 deletions(-)

diff --git a/MvnDemo/pom.xml b/MvnDemo/pom.xml
index a9007bc..6a86489 100644
--- a/MvnDemo/pom.xml
+++ b/MvnDemo/pom.xml
@@ -80,11 +80,11 @@
 							<goal>shade</goal>
 						</goals>
 						<configuration>
+							<shadedArtifactAttached>false</shadedArtifactAttached>
 							<transformers>
 								<transformer
 									implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
-									<mainClass>
-										de.hs_mannheim.informatik.mvn.Main</mainClass>
+									<mainClass>de.hs_mannheim.informatik.mvn.Main</mainClass>
 								</transformer>
 							</transformers>
 						</configuration>
@@ -92,6 +92,46 @@
 				</executions>
 			</plugin>
 
+			<!-- Code Obfuscation -->
+			<plugin>
+				<groupId>com.github.wvengen</groupId>
+				<artifactId>proguard-maven-plugin</artifactId>
+				<version>2.6.1</version>
+				<executions>
+					<execution>
+						<phase>package</phase>
+						<goals>
+							<goal>proguard</goal>
+						</goals>
+					</execution>
+				</executions>
+				<configuration>
+					<!-- WICHTIG: Das injar ist das vom Shade-Plugin erzeugte
+					Jar -->
+					<injar>${project.build.finalName}.jar</injar>
+					<!-- Das outjar ist das finale, geschützte Jar -->
+					<outjar>${project.build.finalName}-protected.jar</outjar>
+					<obfuscate>true</obfuscate>
+					<options>
+						<option>-keep public class de.hs_mannheim.informatik.mvn.Main {
+								public static void main(java.lang.String[]); 
+							}
+						</option>
+						<option>-keepclassmembers enum * {
+    								public static **[] values();
+    								public static ** valueOf(java.lang.String);
+				            }		
+						</option>
+						<!-- Da Shade alle Libs zusammenfügt, brauchst du oft
+						mehr -dontwarn Regeln -->
+						<option>-dontwarn **</option>
+					</options>
+					<libs>
+						<lib>${java.home}/jmods</lib>
+					</libs>
+				</configuration>
+			</plugin>
+
 			<!-- Code coverage, cf.: target/site/jacoco -->
 			<plugin>
 				<groupId>org.jacoco</groupId>
-- 
2.51.0


From 3229710bd65781b60db8401f389703b71bf2b67a Mon Sep 17 00:00:00 2001
From: hummel <oliver@192.168.127.203>
Date: Tue, 5 May 2026 12:12:46 +0200
Subject: [PATCH 2/2] So funktioniert es wohl halbwegs sauber, dass er nur
 unsere eigenen Klassen "obfusziert".

---
 MvnDemo/pom.xml | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/MvnDemo/pom.xml b/MvnDemo/pom.xml
index 6a86489..df9f3d4 100644
--- a/MvnDemo/pom.xml
+++ b/MvnDemo/pom.xml
@@ -113,14 +113,15 @@
 					<outjar>${project.build.finalName}-protected.jar</outjar>
 					<obfuscate>true</obfuscate>
 					<options>
-						<option>-keep public class de.hs_mannheim.informatik.mvn.Main {
+						<option>
+							-keep class !de.hs_mannheim.informatik.** { *; }
+							
+							-keep public class de.hs_mannheim.informatik.mvn.Main {
 								public static void main(java.lang.String[]); 
 							}
-						</option>
-						<option>-keepclassmembers enum * {
-    								public static **[] values();
-    								public static ** valueOf(java.lang.String);
-				            }		
+							
+							-keepattributes *Annotation*
+							-keepattributes Signature
 						</option>
 						<!-- Da Shade alle Libs zusammenfügt, brauchst du oft
 						mehr -dontwarn Regeln -->
-- 
2.51.0