Spring Boot 混淆器

Question

我正在使用带有 bootRepackage gradle 的 Spring Boot 来构建发布 jar 文件。我的项目需要在交付给客户之前对代码进行混淆。我尝试了 proguard 和其他一些工具，但出现了很多问题。我可以建议如何为 Spring Boot 配置此类工具。

我用这些配置尝试了 ProGuard

-injars  ./build/libs/webservice-1.0.jar
-outjars ./build/libs/webservice-obs-1.0.jar
-libraryjars <java.home>/lib/rt.jar
-keep class !myapplicationpackage.** { *; }
-keep class myapplicationpackage.Application { *; }

-ignorewarnings
-keepdirectories **
-dontshrink
-keepattributes *Annotation*

-keepclassmembers class com.yumyumlabs.** { java.lang.Long id; }
-keepnames class com.yumyumlabs.** implements java.io.Serializable

-keepclassmembers class * implements java.io.Serializable {
    static final long serialVersionUID;
    private static final java.io.ObjectStreamField[] serialPersistentFields;
    !static !transient <fields>;
    private void writeObject(java.io.ObjectOutputStream);
    private void readObject(java.io.ObjectInputStream);
    java.lang.Object writeReplace();
    java.lang.Object readResolve();
}


-keepclassmembers class * { 
    @org.springframework.beans.factory.annotation.Autowired *; 
    @org.springframework.beans.factory.annotation.Qualifier *; 
    @org.springframework.beans.factory.annotation.Value *; 
    @org.springframework.beans.factory.annotation.Required *;
    @org.springframework.context.annotation.Bean *;
    @javax.annotation.PostConstruct *;
    @javax.annotation.PreDestroy *;
    @org.aspectj.lang.annotation.AfterReturning *;
    @org.aspectj.lang.annotation.Pointcut *;
    @org.aspectj.lang.annotation.AfterThrowing *;
    @org.aspectj.lang.annotation.Around *;
}
-keep @org.springframework.stereotype.Service class *
-keep @org.springframework.stereotype.Controller class *
-keep @org.springframework.stereotype.Component class *
-keep @org.springframework.stereotype.Repository class *
-keep @org.springframework.cache.annotation.EnableCaching class *
-keep @org.springframework.context.annotation.Configuration class *
-keepattributes Signature

-dontwarn com.yumyumlabs.web.controllers.auth.AuthController



-dontwarn com.google.apphosting.api.ReflectionUtils
-dontwarn sun.misc.Unsafe




-dontwarn org.tartarus.snowball.**
-dontnote

-keepattributes Signature,RuntimeVisibleAnnotations,AnnotationDefault

但是生成的jar不能运行

java.lang.IllegalStateException: Unable to open nested entry 'lib/spring-boot-starter-web-1.2.0.RELEASE.jar'. It has been compressed and nested jar files must be stored without compression. Please check the mechanism used to create your executable jar file
at org.springframework.boot.loader.jar.JarFile.createJarFileFromFileEntry(Unknown Source)
at org.springframework.boot.loader.jar.JarFile.createJarFileFromEntry(Unknown Source)
at org.springframework.boot.loader.jar.JarFile.getNestedJarFile(Unknown Source)
at org.springframework.boot.loader.archive.JarFileArchive.getNestedArchive(Unknown Source)
at org.springframework.boot.loader.archive.JarFileArchive.getNestedArchives(Unknown Source)
at org.springframework.boot.loader.ExecutableArchiveLauncher.getClassPathArchives(Unknown Source)
at org.springframework.boot.loader.Launcher.launch(Unknown Source)
at org.springframework.boot.loader.JarLauncher.main(Unknown Source)

Answer 1

它告诉你问题所在。它正在压缩不允许的嵌入 JAR 文件。您需要让它跳过子元素的压缩。可能最好完全跳过压缩。

真的，您可以跳过所有这些，因为这会使逆向工程变得更加困难，但不能阻止它。如果您真的需要保密，那么您唯一真正的选择是将您的应用程序作为服务出售，而不是提供 JAR、WAR、EAR 等。

IllegalStateException：无法打开嵌套的 条目“lib/spring-boot-starter-web-1.2.0.RELEASE.jar”。它已被压缩，嵌套的jar文件必须未经压缩存储。请检查用于创建可执行jar文件的机制

Answer 2

这可以通过重新打包未压缩的库来完成。这可以使用带有以下 bash 脚本的 jar 工具来完成。该脚本只需在项目主目录中执行即可。

# some constant settings we use
work_dir=work
uncompress_dir=uncompress
library_dir=lib

# parameters for input and output files
# the name of the library that should be uncompressed
library_name="spring-boot-starter-web-1.2.0.RELEASE.jar"
# the obfuscated artifact
original_jar='webservice-obs-1.0.jar'
# the new obfuscated artifact (can be the same)
repacked_jar='webservice-obs-repack-1.0.jar'

# build the obfuscated library
mvn clean package -Dobfuscation

# create working directory and copy obfuscated artifact
mkdir target/$work_dir
cp target/$original_jar target/$work_dir
cd target/$work_dir

# extract contents of obfuscated artifact
jar xvf $original_jar
rm $original_jar

# uncompress the target library and jar again without compression (c0)
mkdir $uncompress_dir
mv $library_dir/$library_name $uncompress_dir
cd $uncompress_dir
jar xvf $library_name
rm $library_name
jar c0mf ./META-INF/MANIFEST.MF $library_name *
mv $library_name ../$library_dir
cd ..
rm -r $uncompress_dir

# jar the complete obfuscated artifact again
# it is important here to copy the manifest as otherwise the library would not be executeable any more by spring-boot
jar c0mf ./META-INF/MANIFEST.MF ../$repacked_jar *

# cleanup work dir
cd ..
rm -r $work_dir

如果更多文件需要这种特殊处理，您可能必须再次执行此操作。执行此操作的库之一是石英。